mcp-use - The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude and MCP Servers for AI Agents.

v9.0.2

June 2026

mcp-use v1.32.0

Patch release paired with mcp-use v1.32.0 — picks up OAuth token endpoint discovery on useMcp().authTokens; no inspector-specific runtime changes.

Update: Updated mcp-use to v1.32.0

v9.0.1

June 2026

mcp-use v1.31.1

Patch release paired with mcp-use v1.31.1 — picks up workspace dependency alignment; no inspector-specific runtime changes.

Update: Updated mcp-use to v1.31.1

v9.0.0

June 2026

OAuth credential lifecycle & mcp-use v1.31.0

Major release paired with mcp-use v1.31.0 — peer dependency moves to >=1.31.0-canary.1; explicit OAuth credential cleanup when removing a saved server.

Fix: delete-server passes { clearCredentials: true } to removeConnection so an explicit user removal forgets persisted OAuth credentials instead of leaving tokens behind (#1703)
Update: Peer dependency on mcp-use moves to >=1.31.0-canary.1
Update: Updated mcp-use to v1.31.0

v8.0.2

June 2026

mcp-use v1.30.2

Patch release paired with mcp-use v1.30.2 — picks up the chalk CJS compatibility fix; no inspector-specific runtime changes.

Update: Updated mcp-use to v1.30.2

v8.0.1

June 2026

Patch release paired with mcp-use v1.30.1 - invoking/invoked labels in the MCP Apps preview pane no longer block iframe interactions.

Fix: MCP Apps preview status label used an absolutely positioned h-full wrapper that intercepted hover, click, and form controls along the left edge of the widget iframe; apply pointer-events-none, remove the full-height wrapper, and align the Apps SDK label in OpenAIComponentRenderer (#1694, #1678)
Update: Updated mcp-use to v1.30.1

v8.0.0

June 2026

mcp-use v1.30.0

Major release paired with mcp-use v1.30.0 - peer dependency moves to >=1.30.0-canary.0; no inspector-specific runtime changes.

Update: Peer dependency on mcp-use moves to >=1.30.0-canary.0
Update: Updated mcp-use to v1.30.0

v7.0.1

June 2026

mcp-use v1.29.1

Patch release paired with mcp-use v1.29.1 - picks up OAuth transport auth hardening and workspace security dependency bumps; no inspector-specific runtime changes.

Update: Updated mcp-use to v1.29.1

v7.0.0

June 2026

Major release paired with mcp-use v1.29.0: chat against a local Ollama daemon, MCP image tool results forwarded to vision models as real images, an MCP-server reconnect banner, and a reworked widget fullscreen / picture-in-picture path - plus a large dead-code cleanup.

New: Ollama as a local LLM chat provider - local model discovery and streaming chat, talking to the daemon directly over CORS (no server-side proxy) with an OLLAMA_ORIGINS hint surfaced when the browser fetch is blocked (#1395)
New: MCP-server reconnect banner - chat recognises the cloud’s mcp_auth_required 401 (e.g. an expired upstream OAuth token) and renders an inline reconnect banner for the affected server that refreshes the token in place, instead of pointing users at the Manufact account login (#1485)
New: copy button on user messages, matching the assistant-message UX (#1556)
Enhancement: mcp-use client screenshot auto-sizes to the widget’s natural dimensions when --width/--height are omitted and handles external MCP server URIs (ui://<server>/<name>.html) (#1579)
Enhancement: snappier tab-switch animation timing (#1544)
Fix: MCP image tool results are forwarded to the model as real image content instead of base64-encoded JSON - image bytes route through each provider’s vision channel (Anthropic tool_result image blocks; OpenAI / Google follow-up user turns), and text-only results now reach the model unwrapped (#1487)
Fix: widget fullscreen renders above embedded host chrome - native requestFullscreen() on the widget shell with an exit navbar, picture-in-picture portaled to document.body at z-[100], and AppBridge reconnect after the sandbox iframe remounts (#1605)
Fix: stop ToolInputForm from writing an invalid per-property required: boolean onto the live tool inputSchema during render, which made Anthropic reject the chat request with tools.0.custom.input_schema invalid after a tool was opened in the Tools tab (#1545)
Fix: keep per-tab count badges visible and right-aligned in collapsed header tabs (#1490)
Fix: propagate server alias updates through the MCP server wrapper so the tile heading reflects a renamed alias immediately (#1539)
Fix: replace the trailing-slash regex in normalizeOllamaBaseUrl with a linear scan, resolving a CodeQL polynomial-regex alert (#1534)
Chore: add an OAuth redirect e2e against an emulated Google issuer, exercising both Direct and Via Proxy connection types (#1481, #1609)
Chore: remove 18 unused source files, stop generating the unused client-side version.ts, and drop dead barrel re-exports flagged by Knip (#1510, #1533, #1607)
Update: Updated mcp-use to v1.29.0

v6.0.0

May 2026

Major release paired with mcp-use v1.28.0: new ViewPreview component and /preview/:view client-side route that back the mcp-use client screenshot CLI pipeline, dark-mode aware scrollbars across the UI, and a cleanup of duplicate Knip-flagged exports.

New: <ViewPreview> internal component and /preview/:view client-side route — a chromeless surface the CLI screenshot pipeline drives via CDP. MCPAppsRenderer gains an optional onReady callback that the preview route uses to signal body[data-view-ready="true"], which the CLI waits for before capturing. The preview route detects globalThis.__mcpUsePreviewBundle (injected by the CLI via CDP Page.addScriptToEvaluateOnNewDocument) and renders the widget inline, skipping the browser-side MCP connection entirely (#1432)
Enhancement: dark-mode aware scrollbars styled to match the inspector theme, with improved hover visibility (#1484)
Fix: removed the redundant default export of JsonRpcLoggerView; the named export is unchanged (#1453)
Update: Updated mcp-use to v1.28.0

v5.0.1

May 2026

MCP App width fix in chat

Patch release paired with mcp-use v1.27.1: MCP App width is pinned in chat so only height responds to widget-reported sizes.

Fix: Pin MCP App width in chat - onSizeChange only updates height, and the inline transition no longer animates width; prevents the chat panel from collapsing when widgets report narrower content (#1462)
Update: Updated mcp-use to v1.27.1

v5.0.0

May 2026

OpenRouter, pre-registered OAuth & telemetry env

Major release paired with mcp-use v1.27.0: OpenRouter and OpenAI-compatible providers in chat configuration, pre-registered OAuth client credentials in the connection dialog, and MCP_USE_ANONYMIZED_TELEMETRY honored in browser telemetry.

New: OpenRouter as a first-class chat provider - a single OpenRouter API key fronts upstream OpenAI / Anthropic / Google models; internally reuses the OpenAI provider with an override base URL and the required HTTP-Referer / X-Title headers (#1403)
New: “OpenAI Compatible” entry in the chat provider dropdown - point inspector chat at any OpenAI-compatible API (LM Studio, Ollama, OpenRouter, etc.) with a required Base URL field and an optional API key; the standard OpenAI provider is unchanged (#1437)
New: Client ID, Client Secret, and Scope fields in the Authentication dialog wired through addServer / updateServer for pre-registered OAuth flows against providers that strip registration_endpoint from metadata (#1400)
Fix: Browser telemetry honors MCP_USE_ANONYMIZED_TELEMETRY=false - the inspector server mirrors the env var into window.__MCP_USE_ANONYMIZED_TELEMETRY__ before the client bundle loads, so a single env var disables both mcp-use’s in-browser posthog-js and the inspector’s own client telemetry (#1443)
Update: Updated mcp-use to v1.27.0

v3.0.2

April 2026

Patch release updating Playwright coverage for the command palette Settings entry after the navbar refactor; paired with mcp-use v1.25.2.

Fix: Command palette e2e test targets the Settings option via the dropdown trigger introduced in the inspector settings UX (#1428)
Update: Updated mcp-use to v1.25.2

v3.0.1

April 2026

OAuth single-tab flow, embed fixes & Hono detection

Patch release fixing OAuth redirect flows, embedded ChatTab UI leaks, and Hono duck-type detection in mountInspector; paired with mcp-use v1.25.1.

Fix: OAuth authorization now opens in the current tab (useRedirectFlow: true, preventAutoAuth: true) and the callback navigates the same tab back - users no longer end up with two inspector tabs (#1391)
Fix: Store connection config in sessionStorage before OAuth redirect so auto-reconnect works after the callback without a ?autoConnect param (#1404)
Fix: OAuth callback redirects back to the inspector with error parameters on failure (user denies, server error) instead of showing a raw error page; surfaced as a persistent app-level toast (#1381)
Fix: mountInspector(app) detects Hono via duck-typing (.fetch(Request) => Response) instead of instanceof, resolving crashes when the host and inspector resolve different Hono module records (#1417)
Fix: MCP App widget z-index - removed explicit z-20/z-10 from sandboxed iframe wrappers so widgets scroll beneath the chat header instead of painting over it (#1407)
Fix: Free-tier upgrade UI (Model & usage dialog, model badge) is now opt-in via enableFreeTierUpgrade on ChatTab (default false) and is hidden for host-app embeds that manage their own session (#1399)
Fix: Suppress duplicate model chrome (landing pill, ChatHeader badge) when host passes managedLlmConfig + hideModelBadge; chat no longer auto-switches to client-side streaming when localLlmConfig exists in localStorage and the host owns the chat stream (#1418)
Documentation: --no-open CLI flag added to the inspector CLI reference (#1397)
Update: Updated mcp-use to v1.25.1

v3.0.0

April 2026

Major release paired with mcp-use v1.25.0: chat-initiated elicitation requests render inline in the chat thread, hosted inspector links get rich previews, and the peer dependency on mcp-use tracks the 1.25 OAuth refactor.

New: Elicitation requests triggered from the Chat tab render inline in the chat thread instead of routing users through a toast to the Elicitation tab; Tools-tab triggers keep the existing toast flow, and the Elicitation tab remains available as an audit view (#1336)
New: Links to the hosted inspector now render rich previews on Slack, X/Twitter, LinkedIn, Discord, and other platforms (#1376)
Update: Peer dependency on mcp-use moves to >=1.25.0-canary.9 to pick up the OAuth DCR-direct refactor
Update: Updated mcp-use to v1.25.0

v2.2.0

April 2026

Hosted chat runtime, LLM providers & chat export

Minor release paired with mcp-use v1.24.2: first-party inspector LLM streaming (no LangChain on the chat path), copy/export chat, runtime hosted-chat URL, hosted free-tier chat, and cloud env tooling via the CLI (#1372).

New: First-party LLM providers for inspector chat (Anthropic, OpenAI, Google) with shared message formatting, SSE streaming, and tool loops - the inspector no longer depends on LangChain for chat (#1372)
New: “Copy Chat” and “Export Chat” in the chat header - markdown to clipboard; download as JSON or Markdown with tool calls in order (#1324)
New: Free tier chat on the hosted inspector (#1368)
New: Hosted chat URL from runtime config - inspector server reads MANUFACT_CHAT_URL and injects window.__MANUFACT_CHAT_URL__; InspectorProvider prefers that value and falls back to VITE_MANUFACT_CHAT_URL for local dev (#1370)
Fix: OAuth login popup - drop noopener and redirect callbackURL to /inspector/oauth-popup-closed.html so the popup self-closes instead of loading the full inspector (#1370)
Update: Updated mcp-use to v1.24.2

v2.1.0

April 2026

Minor release with MCP Apps debug theme toggle and navbar/settings UX improvements; dependency bump to mcp-use v1.24.1.

New: Theme toggle button in MCP Apps debug controls toolbar
Enhancement: Navbar - chat tab first with label and separator; alwaysExpanded on tab triggers so the active label stays visible when collapsed; Deploy links to manufact.com/signup with inspector referrer; tunnel control between Add to Client and Deploy with updated styling and mobile visibility; theme toggle, command palette, and GitHub under a settings dropdown; “Report a Bug” prefills a GitHub issue with the inspector label
Update: Updated mcp-use to v1.24.1

v2.0.0

April 2026

Subpath OAuth, chat UX & tab persistence

Major release paired with mcp-use v1.24.0: correct OAuth redirects when the inspector is served under /inspector, clearer chat streaming UI, and restored tab state after reload.

Fix: McpClientProvider receives defaultCallbackUrl so OAuth redirects target /inspector/oauth/callback (matches React Router basename); removes the authentication dialog “Redirect URL” field that was not wired to the live connection
Fix: Hide the thinking indicator when the assistant message already has rendered parts so the spinner does not linger after streaming completes
Enhancement: Persist the active inspector tab across page refresh
Update: Updated mcp-use to v1.24.0

v1.0.1

April 2026

Embedded inspector without LangChain

Patch release fixing server routes that imported telFetch from the root mcp-use package.

Fix: Import telFetch from mcp-use/telemetry/tel-fetch so shared routes do not load the root entry (which eagerly pulls the agent graph); resolves embedded inspector failures when langchain is not installed
Update: Updated mcp-use to v1.23.1

v1.0.0

April 2026

Stream protocol, aliases & chat tooling

Major release with MCP stream support in chat, connection UX improvements, and dependency hardening.

New: MCP data stream protocol support in ChatTab and useChatMessages
Enhancement: disabledTools prop on ChatTab and useChatMessages for finer tool control
New: Editable MCP server aliases in connection settings; updateServerMetadata() from McpClientProvider updates display names without a full reconnect; shared getServerDisplayName across dashboard tiles, server dropdown, header actions, command palette, server info modal, and server icon
Fix: Alias-only edits no longer trigger a full reconnect; IME composition no longer submits the connection form when pressing Enter mid-composition
Enhancement: Persist tabs on refresh; sync URL tab query param when switching tabs so state survives reload
Enhancement: Tool-invocation serialization, screenshots, and message list refs for integrations such as manufact.build
Update: Removed unused transportType / setTransportType props from ConnectionSettingsForm
Fix: Tighter pnpm overrides and lockfile refresh for pnpm audit; lodash override in the mcp-apps scaffold template for standalone installs
Update: Vite 8.0.5, Hono 4.12.12, @hono/node-server 1.19.13
Update: Updated mcp-use to v1.23.0

v0.26.1

March 2026

Dependency & bundling alignment

Patch release aligning how @mcp-use/inspector packages mcp-use for bundling and shared types.

Fix: Restore mcp-use as both a dependency and peerDependency - tsup bundles non-React subpaths with transitive deps; peerDependency preserves shared mcp-use/react types with the host app
Update: Updated mcp-use to v1.22.3

v0.26.0

March 2026

Peer Dependency Alignment & MCP UI v7

Minor release aligning inspector dependency strategy for shared type safety and upgrading MCP UI client rendering internals.

Fix: Moved mcp-use from dependencies to peerDependencies in @mcp-use/inspector so consumers reuse a single mcp-use type instance (prevents pnpm duplicate-type TS2322 conflicts)
Enhancement: Upgraded @mcp-ui/client from v6 to v7
Enhancement: Replaced removed legacy UIResourceRenderer path with sandboxed iframe rendering for legacy ui:// resources
Enhancement: Removed remote-dom usage to align with upstream @mcp-ui/client v7 changes
Update: Updated mcp-use to v1.22.2

v0.25.1

March 2026

Chat History Tool Results & ErrorBoundary Customization

Patch release improving chat history reconstruction so tool calls/results (including structuredContent) persist across turns, plus ErrorBoundary fallback/reporting hooks.

Fix: Preserve tool invocation context across chat turns - reconstruct assistant messages as AIMessage tool calls plus ToolMessage results; keep structuredContent and strip _meta before sending to the model
Enhancement: Chat message conversion supports tool results and multimodal content more reliably
Enhancement: ErrorBoundary now supports fallback (node or (error) => node) and onError for reporting (default UI unchanged)
Update: Updated mcp-use to v1.22.1

v0.25.0

March 2026

Tunnel Controls & Vite 8

Minor release with tunnel management for mcp-use dev, Vite 8 build stack, and elicit payload alignment with the MCP spec.

New: Start/stop the mcp-use dev tunnel from the Inspector
Enhancement: Vite 8.0 with Rolldown bundler and @vitejs/plugin-react 6 in the inspector build
Fix: Elicit - send content instead of data per the MCP spec; aligns with createElicitMethod validation on the client
Update: Updated mcp-use to v1.22.0

v0.24.5

March 2026

Dependency Updates

Patch release with dependency updates.

Fix: Dependabot security alerts - updated vulnerable dependencies (hono, dompurify, etc.)
Update: Updated mcp-use to v1.21.5

v0.24.4

March 2026

Dependency Update

Patch release with dependency update.

Update: Updated mcp-use to v1.21.4

v0.24.3

March 2026

Sandbox Host Fix

Patch release fixing sandbox host derivation for cloud-embedded inspector pages.

Fix: Sandbox host derivation for cloud-embedded pages - apex hosts (e.g. manufact.com) now resolve to sandbox-inspector.{domain} instead of sandbox-{domain}
Update: Updated mcp-use to v1.21.3

v0.24.2

March 2026

Embedded Inspector Proxy Fix

Patch release fixing auto-connect when inspector is served from MCP server (Python, custom servers).

Fix: Skip proxy when inspector origin matches MCP server origin - no longer routes through missing /inspector/api/proxy on embedded servers
Fix: Detect proxy availability via runtime config injection (__MCP_PROXY_URL__); disable autoProxyFallback when no proxy is available
Update: Updated mcp-use to v1.21.2

v0.24.1

March 2026

Chat Components & Dark Mode Fixes

Patch release with exported chat component enhancements and proxy header handling.

Fix: Tools selection and attachment button icons invisible in dark mode
Enhancement: Strip infra headers from proxied requests
New: Initial messages support for exported chat components (ChatTab, useChatMessages)
Update: Updated mcp-use to v1.21.1

v0.24.0

March 2026

Inspector Embedding & MCP Apps

Minor release with embedding support and logger improvements.

New: Inspector embedding support - build fix and InspectorProvider for embedded usage
New: MCP Apps support in clientInfo.capabilities - inspector advertises io.modelcontextprotocol/ui
Enhancement: Logger middleware filters noisy API endpoints (telemetry, RPC stream/log)
Fix: --no-open flag respected in standalone dev mode (was always opening browser)
Update: Updated mcp-use to v1.21.0

v0.23.1

February 2026

Dependency Update

Patch release with dependency update.

Update: Updated mcp-use to v1.20.5

v0.23.0

February 2026

Embedded Chat Improvements

Minor release improving embedded chat experience.

Enhancement: Improved embedded chat
Update: Updated mcp-use to v1.20.4

v0.22.3

February 2026

Standalone Deployment Fix

Patch release fixing version import in standalone deployment.

Fix: Standalone deployment was importing the version from the wrong path
Update: Updated mcp-use to v1.20.3

v0.22.2

February 2026

Patch release with useAutoConnect, MCPAppsRenderer, and chat agent fixes.

Fix: useAutoConnect now retains tile visibility on connection failure
Enhancement: MCPAppsRenderer and OpenAIComponentRenderer - improved border handling and status display; prefersBorder default set to false; status labels above widget in inline mode
Enhancement: ToolResultDisplay z-index for proper sticky layering
Enhancement: exposeResourcesAsTools and exposePromptsAsTools options in MCPAgentOptions; inspector chat tab sets both to false so agent only exposes actual MCP tools
Update: Updated mcp-use to v1.20.2

v0.22.1

February 2026

Patch release with invoking/invoked status display and CSP handling improvements.

New: Display of invoking and invoked status texts in MCPAppsRenderer, OpenAIComponentRenderer, ToolResultDisplay, ToolResultRenderer
Enhancement: MCPAppsDebugControls adjusts violation indicators based on CSP mode
Fix: sandbox-proxy strips existing CSP meta tags before injecting permissive CSP
Update: Updated mcp-use to v1.20.1

v0.22.0

February 2026

Iframe Console & CSP Panel

Minor release with Iframe Console enhancements and CSP violation handling.

New: Iframe Console with expandable logs, level filter, search, resizable height
New: Widget debug context for chat
Enhancement: MCP Apps debug controls (tool props JSON view, required props hint, SEP-1865 semantics)
New: CDN build
Fix: useSyncExternalStore first-render handling; reconnect logic; Tools tab sends only explicitly set fields; resource annotations include _meta
New: CSP violations panel with clear action; widget re-execution on CSP mode change; CSP mode for Apps SDK
Update: Updated mcp-use to v1.20.0

v0.21.1

February 2026

Dependency Update

Patch release with dependency update.

Update: Updated mcp-use to v1.19.3

v0.21.0

February 2026

Bulk Paste & Tool Definition Enhancements

Minor release adding bulk paste functionality and enhanced tool definition handling.

New: Bulk paste functionality in ToolsTab - paste JSON or JavaScript object syntax directly
New: Auto-fill dialog to confirm updates when pasted data would overwrite existing values
Enhancement: ToolExecutionPanel now copies full tool definition
Enhancement: Added utility functions for parsing and converting JavaScript object syntax to JSON
Enhancement: Visual feedback for auto-filled fields in ToolInputForm
Update: Updated mcp-use to v1.19.2

v0.20.1

February 2026

Patch release improving widget loading and iframe handling.

Enhancement: Improved MCPAppsRenderer loading logic and widget handling
Enhancement: Enhanced useWidget for better iframe lifecycle management
Update: Updated mcp-use to v1.19.1

v0.20.0

February 2026

Chat Quick Questions & Enhanced UX

Minor release with chat quick questions and followups, improved loading states, and developer experience enhancements.

Chat Enhancements

New: Support for chatQuickQuestions and chatFollowups in ChatTab components

Loading & Error Handling

Enhancement: MCPAppsRenderer shows loading spinner with isReady state management
Enhancement: Replaced shimmer with Spinner component for better initial widget load UX
Enhancement: Added skeleton loading state for widgets
Enhancement: Global error listeners and improved error logging in widget components

Developer Experience

New: Copy all logs to clipboard feature
Enhancement: Enhanced theme handling in OpenAIComponentRenderer
Enhancement: ToolsList displays metadata and icons differentiating MCP/OpenAI tool types
Fix: Allow permissive CSP frame ancestors by default
Fix: Correct MIME type for mcp_apps resource counting

Dependencies

Update: Updated mcp-use to v1.19.0

v0.19.0

February 2026

Tool Arguments, Streaming Input & Elicitation Enum Support

Minor release with tool argument handling, streaming input support, and elicitation enum variants.

New: Tool argument type coercion and schema resolution (boolean, array, object); ToolsTab and ToolInputForm use new schema utilities; validation server tool and E2E tests for typed arguments
New: Partial tool input handling for streaming arguments in MCPAppsRenderer; MessageList and ToolResultRenderer support streaming states; useChatMessagesClientSide handles streaming tool call arguments; useWidget types for partial/streaming state
New: Elicitation support for SEP-1330 enum schema variants (single-select, multi-select); client and server handling; Elicitation tab docs and tests
Fix: Readiness state reset when widget URL changes in OpenAIComponentRenderer; improved tool output and response metadata handling for pending-to-ready transitions
Update: Updated mcp-use to v1.18.0

v0.18.9

February 2026

Log Noise Reduction

Patch release reducing dev server log noise and aligning dependencies.

Fix: Reduced noisy logs in the dev server
Update: Updated mcp-use to v1.17.4

v0.18.8

February 2026

Patch release focused on widget iframe lifecycle reliability and state update safety.

Fix: Reset widget readiness state when widget URL changes so new iframes re-initialize correctly
Enhancement: Improved tool output and response metadata transitions from pending to ready states
Enhancement: Queued iframe global updates until OpenAI globals are available for more reliable widget synchronization
Fix: Added animation frame cleanup logic to prevent memory leaks during component unmount
Update: Updated mcp-use to v1.17.3

v0.18.7

February 2026

Chat Conversion & Error Copy Fixes

Patch release improving chat message conversion and copy behavior.

Fix: Copy button now copies actual error text instead of null
Fix: Chat message conversion now falls back to parts when content is empty, with improved attachment handling
Enhancement: Chat request streaming now uses external history for better context handling and to avoid duplicated messages
Update: Updated mcp-use to v1.17.2

v0.18.6

February 2026

Dependency Update

Patch release aligned with mcp-use dependency updates.

Update: Updated mcp-use to v1.17.1

v0.18.5

February 2026

Iframe Embedding & Reverse Proxy Support

Patch release with iframe embedding configuration, reverse proxy improvements, and widget rendering fixes.

New: MCP_INSPECTOR_FRAME_ANCESTORS environment variable to control which origins can embed the inspector in iframes via CSP frame-ancestors
New: mountInspector accepts devMode and sandboxOrigin options for deployment flexibility
New: Runtime config injection (__MCP_DEV_MODE__, __MCP_SANDBOX_ORIGIN__ window globals) without rebuild
Enhancement: Server-side widget fetches convert external proxy URLs to localhost for correct content retrieval
Enhancement: Simplified widget asset URL rewriting for improved reverse proxy reliability
Fix: Infinite re-render loop in MCPAppsRenderer caused by excessive useEffect dependencies
Update: Updated mcp-use to v1.17.0

v0.18.4

February 2026

E2E Testing & Refresh Features

Patch release with comprehensive E2E testing infrastructure and enhanced UI functionality.

E2E Testing Infrastructure

New: Comprehensive Playwright-based E2E test suite with full coverage for chat, connections, HMR, widgets, and command palette
New: GitHub Actions workflow (.github/workflows/inspector-e2e.yml) for automated E2E testing across multiple modes
New: Test fixtures for authentication servers (OAuth mock, API key, custom headers)
New: Test helpers for connection, authentication, and debugger tools
New: Test matrix for parameterized test scenarios across multiple inspector modes (mix, prod, builtin)
New: Widget examples for conformance testing (weather-display, status-card, display-info, apps-sdk-only-card)
Enhancement: Comprehensive E2E testing documentation in tests/e2e/README.md

Testability Improvements

Enhancement: Added data-testid attributes across 40+ UI components for reliable element selection
Enhancement: Enhanced component accessibility for automated testing including connection forms, server list, command palette, chat interface, tool execution panels, resources/prompts/tools tabs, and elicitation/sampling displays

UI Enhancements

New: Refresh buttons with loading states for Tools, Resources, and Prompts tabs
New: ListTabHeader component with refresh functionality and spinning icon animation
Enhancement: Manual refresh capability for primitives without reconnecting to server
Fix: Inspector now detects when server= query parameter contains a URL that’s not already connected and automatically redirects to use autoConnect= instead
Enhancement: Added comprehensive URL parameters documentation page to inspector reference

Fix: Widget pending state now correctly emulated to reflect ChatGPT behavior
Enhancement: MCPAppsRenderer and OpenAIComponentRenderer handle tool output and metadata more effectively
Enhancement: Immediate rendering of widgets even when results are pending
Enhancement: MessageList and ToolResultRenderer support immediate rendering of widget tools
Enhancement: Widget props support in ToolResultDisplay

Server Improvements

Enhancement: Changed default port from 3001 to 3000 for production builds (dev still uses 3001)
Enhancement: Skip telemetry (PostHog/Scarf) when NODE_ENV=test or MCP_USE_ANONYMIZED_TELEMETRY=false
New: start-auth-servers.ts utility for running authentication test servers

Dependencies

Update: Updated mcp-use to v1.16.4

v0.18.3

February 2026

Dependency Update

Patch release with dependency updates.

Update: Updated mcp-use to v1.16.3

v0.18.2

January 2026

Inspector Fixes

Patch release with widget behavior fix and improved URL handling.

Fix: Widget pending state now correctly emulated to reflect ChatGPT behavior
Fix: Inspector now detects when server= query parameter contains a URL that’s not already connected and automatically redirects to use autoConnect= instead
Update: Updated mcp-use dependency to v1.16.2

v0.18.1

January 2026

Dependency Update

Patch release aligned with mcp-use v1.16.1.

Update: Updated mcp-use dependency to v1.16.1

v0.18.0

January 2026

Chat Prompts & Multimodal Support

Minor release introducing prompts in chat and multimodal image support for vision-capable LLMs.

Chat Prompts

New: Prompts in Chat - type / to open a prompt, run it, and include its result in the thread before sending
Note: Prompts with arguments are not yet supported in this release

Multimodal Support

New: Image attachment support in Inspector chat
New: Upload and send images to vision-capable LLMs (GPT-4o, Claude, Gemini) using the paperclip button
Enhancement: MCP prompts that return images are now properly displayed instead of showing raw JSON
Enhancement: Full multimodal support for image content in chat interface

Dependencies

Update: Updated mcp-use to v1.16.0

v0.17.3

January 2026

Theme URL Parameter Fix

Patch release enabling dark mode through URL parameter.

Fix: Enable dark mode through theme URL parameter
Update: Aligned with mcp-use v1.15.3

v0.17.2

January 2026

HMR File Watcher Fix

Patch release fixing file watcher resource exhaustion in containerized environments.

Fix: HMR file watcher exhausting inotify limits by properly ignoring node_modules
Fix: Prevented ENOSPC errors in containerized environments caused by watching files inside node_modules/
Update: Aligned with mcp-use v1.15.2

v0.17.1

January 2026

Dependency Update

Patch release with dependency updates.

Update: Updated mcp-use to v1.15.1

v0.17.0

January 2026

MCP Apps Support & Landing Pages

Major release introducing MCP Apps support with dual-protocol widget rendering and enhanced inspector capabilities.

MCP Apps Support

New: Dual-protocol support enabling widgets to work with both MCP Apps and ChatGPT Apps SDK
New: MCPAppsRenderer component for advanced debugging and visualization
New: MCPAppsDebugControls component for widget debugging
New: Sandboxed iframe support with console logging and safe area insets for isolated widget rendering
New: Widget adapters (MCP Apps, Apps SDK) with protocol helpers for seamless cross-protocol compatibility

Landing Pages

New: HTML landing page support for MCP server endpoints
New: Connection instructions for Claude Code, Cursor, VS Code, VS Code Insiders, and ChatGPT
Enhancement: Browser host normalization for server connections

Bug Fixes & Security

Fix: MCP server landing now shows the external URL instead of the internal URL
Fix: Zod JIT compilation to prevent CSP violations in sandboxed environments
Security: Fixed vulnerabilities in dependencies

Dependencies

Update: Updated mcp-use to v1.15.0

v0.16.2

January 2026

UI Enhancements & Connection Handling

Patch release with improved UI components, widget security enhancements, and better connection management.

UI Enhancements

Enhancement: CustomHeadersEditor with improved focus management and title prop support
Enhancement: Standardized proxy configuration - renamed customHeaders to headers in InspectorDashboard and ServerConnectionModal for consistency

Enhancement: Widget security headers with frame domain support
Enhancement: Added frame_domains to widgetCSP interface for iframe embed control
Enhancement: Updated getWidgetSecurityHeaders to include frame_domains in CSP for OpenAI compatibility
Enhancement: CSP handling in OpenAIComponentRenderer prioritizes metadata from tool results and resources

Connection Handling

Enhancement: Improved server connection handling with new handleReconnect function
Enhancement: UI elements reflect connection states more accurately with better hover effects and error displays
Enhancement: Enhanced error handling for unauthorized connections with clearer user feedback
Enhancement: State management for connecting servers in InspectorDashboard

Dependencies

Update: Aligned with mcp-use v1.14.2 improvements

v0.16.1

January 2026

Tool Output Display Fix

Patch release with tool output display improvement.

Fix: Inspector tool output now displays at full height for better content visibility
Update: Aligned with mcp-use v1.14.1

v0.16.0

January 2026

RPC Message Management & LangChain Fixes

Release with enhanced RPC message handling and critical bug fixes for Anthropic integration.

RPC Message Management

New: Copy functionality for RPC messages in Prompts, Resources, and Tools tabs
New: Reusable RpcPanel component for consistent RPC message handling across tabs
New: Export functionality for RPC messages
Enhancement: Improved panel management with refactored ResizablePanel components

Resource Properties Management

New: Custom properties support for resources - dynamically configure resource properties
New: PropsSelect component for intuitive property selection and management
New: PropsConfigDialog with AI-powered property suggestions using Claude
New: SchemaFormField component for rendering JSON schema-based forms
New: usePropsLLM hook leveraging Claude for intelligent property suggestions
New: useResourceProps hook for managing resource props state

Inspector Improvements

Enhancement: Extracted MCP prompts logic into reusable useMCPPrompts hook
Enhancement: Server metadata display with website URLs and icons
Enhancement: Better tool management - cleared selected tools when removed from list
Enhancement: Enhanced JSONDisplay with improved line wrapping and font size for better readability
Enhancement: ToolExecutionPanel now includes collapsible description section
Enhancement: Integrated JSON metadata visualization in tool execution panel
Enhancement: McpUIRenderer and OpenAIComponentRenderer support customProps parameter
Enhancement: ResourceResultDisplay with dynamic property configuration UI
Enhancement: Enhanced Prism theme support for better code highlighting
Enhancement: Updated useMcp hook to expose mcpServerUrl for resource operations

Bug Fixes

Fix: Resolved Anthropic tool_use.id required error with LangChain 1.3.10 update
Fix: Proper tool_call ID generation ensuring unique IDs for all tool_use blocks
Fix: Improved backward compatibility by checking both ‘headers’ and ‘customHeaders’

Dependencies

Update: @langchain/anthropic to 1.3.10
Update: @langchain/core to 1.1.15
Update: langchain to 1.2.10
Update: react-resizable-panels to 4.4.1

v0.15.3

January 2026

Dependency Update

Patch release with dependency updates.

Enhancement: Updated mcp-use dependency to latest version

v0.15.2

January 2026

OAuth Proxy URL Handling Improvements

Patch release with improved OAuth proxy URL handling and connection logic.

Enhancement: Improved OAuth proxy URL derivation from callback URLs
Enhancement: Better handling of root path callbacks in OAuth flow
Enhancement: Clearer separation between OAuth proxy URLs and connection URLs
Fix: Maintains valid OAuth tokens across sessions by not clearing OAuth storage before connecting

v0.15.1

January 2026

URL Validation & LocalStorage Enhancements

Patch release with URL validation improvements and localStorage functionality.

Enhancement: Automatically prepends “https://” to URLs without protocol for better user experience
Enhancement: Improved URL validation logic in InspectorDashboard and ServerConnectionModal
Enhancement: Added localStorage clearing functionality for MCP-related items to help with troubleshooting
Fix: Enhanced localStorage checks to verify both existence and functional methods before usage
Fix: Clear stale OAuth storage before connecting to ensure fresh authentication flow

v0.15.0

January 2026

Chat Stop Functionality

Minor release adding the ability to stop ongoing chat responses in the inspector.

Chat Functionality

New: Stop functionality for chat responses - users can now abort streaming responses
New: Export stop function from useChatMessagesClientSide hook connected to abortControllerRef
New: abortControllerRef added to useChatMessages hook for proper abort control
Enhancement: Stop button connected to abort streaming responses for better user control

UI & Authentication

Enhancement: Simplified authentication button logic in InspectorDashboard
Enhancement: Updated multi-server example to link directly to authentication URL
Fix: Updated dependency hono to 4.11.4

v0.14.6

January 2026

Dependency Update

Patch release with dependency updates.

Enhancement: Updated mcp-use dependency to latest version

v0.14.5

January 2026

OAuth & Metadata Enhancements

Minor release with OAuth proxy support, metadata caching, and favicon improvements.

OAuth & Client Info

Enhancement: Enhanced OAuth proxy to support gateway/proxy scenarios (e.g., Supabase MCP servers)
Enhancement: Client info support with branding displayed on OAuth consent pages
Enhancement: Server metadata caching for immediate display on reconnect - improves UX by showing server info instantly
Enhancement: Improved logging middleware for API routes with better debugging visibility
Enhancement: Enabled OAuth proxy logging for better flow visibility

Favicon Detection

Enhancement: Enhanced favicon detector to try all subdomain levels (e.g., mcp.supabase.com → supabase.com → com)
Enhancement: Detection of default vs custom favicons using JSON API response
Enhancement: Prefer non-default favicons when available

Bug Fixes

Fix: Remove import from “mcp-use” which causes langchain import in server
Enhancement: Enhanced synchronization for tools, prompts, and resources during HMR

v0.14.4

January 2026

Connection Fix

Patch release fixing autoconnect configuration parsing.

Fix: Autoconnect now correctly parses config objects in addition to string URLs

v0.14.3

January 2026

Security Fixes & OAuth Improvements

Patch release addressing multiple security vulnerabilities and fixing OAuth flow issues.

Security Fixes

Security: Fixed 13 vulnerabilities (3 moderate, 10 high)
Security: Updated langchain to 1.2.3 (fixes serialization injection vulnerability)
Security: Updated @langchain/core to 1.1.8 (fixes serialization injection vulnerability)
Security: Updated react-router to 7.12.0 (fixes XSS and CSRF vulnerabilities)
Security: Added overrides for qs and preact vulnerabilities

OAuth & Connection Improvements

Fix: Resolved OAuth flow looping issue by removing duplicate fallback logic
Enhancement: Simplified connection handling with consolidated state management
Enhancement: Enhanced OAuth authentication flow with improved connection settings
Enhancement: Improved auto-connect functionality with better proxy handling and error management
Enhancement: Enhanced theme toggling with dropdown menu for better UX and accessibility
Enhancement: Updated OAuth flow management in browser provider and callback handling

v0.14.2

January 2026

Automatic Proxy Fallback & Reconnect

Minor release with automatic proxy fallback, OAuth proxy support, and reconnect functionality.

Breaking Changes (with Deprecation Warnings)

Breaking: Renamed customHeaders to headers across all APIs. Old name still works but shows deprecation warnings.
Breaking: Renamed samplingCallback to onSampling for consistency. Old name still works but shows deprecation warnings.

New Features

New: Reconnect functionality for failed connections - reconnect button in InspectorDashboard UI
New: Reconnect option in dropdown menu for failed connections
New: Configurable clientInfo support for MCP connection initialization with full metadata
New: Automatic Proxy Fallback - automatically retries failed connections through proxy
New: OAuth Proxy Support with oauthProxyUrl configuration

Improvements

Enhancement: Better detection of OAuth discovery failures, CORS errors, and connection issues
Enhancement: OAuth provider uses original target URL for discovery, not proxy URL
Enhancement: HttpConnector automatic reconnection disabled, shifting responsibility to higher-level logic for better control

Bug Fixes

Fix: Custom headers now correctly included when copying connection configuration from saved tiles
Fix: Headers correctly read from localStorage where stored in proxyConfig.customHeaders

v0.14.1

January 2026

Security Update

Patch release with security fixes and build improvements.

Security: Updated @modelcontextprotocol/sdk to 1.25.2 (fixes ReDoS vulnerability in UriTemplate regex patterns)
Fix: Updated building script to correctly export types for inspector/client components

v0.14.0

January 2026

Multi-Server Support & Browser Compatibility

Release with multi-server management, improved UI responsiveness, and enhanced browser compatibility.

Breaking Changes

Breaking: Removed winston dependency. The logging system now uses a simple console logger that works in both browser and Node.js environments.

Multi-Server Support

New: Multi-server management with McpClientProvider to manage multiple MCP server connections
New: Dynamic addition and removal of servers in React applications
New: Pluggable storage system with LocalStorageProvider and MemoryStorageProvider for flexible server configuration persistence
Enhancement: Refactored useMcp hook for better multi-server support
Enhancement: Removed obsolete McpContext (replaced with McpClientProvider)

UI & UX Improvements

Enhancement: Improved UI responsiveness with enhanced mobile and tablet layouts and adaptive component visibility
Enhancement: Better server management with refactored server connection handling, improved icon display, and status tracking
Enhancement: Enhanced debugging with detailed logging in Layout and useAutoConnect components for better monitoring of server connection states
Enhancement: Simplified connection settings by removing deprecated transport types
Enhancement: Improved server icon support and component interactions
Enhancement: Added embedded mode support
New: Support for passing tab as query parameter for direct navigation
New: Prompt rendering support with enhanced display
New: Add to Client dropdown for quickly adding MCP servers to Cursor, VS Code, Claude Desktop, and CLI tools

Browser Compatibility

Enhancement: Enhanced inspector components for better browser compatibility
Enhancement: Better configuration handling and MCP proxy integration
Enhancement: Improved browser-based MCP client with better connection handling

Bug Fixes

Fix: Query URL handling in built mode now preserves arguments correctly
Fix: Server connection retrieval in OpenAIComponentRenderer to directly access connections array
Fix: Add client SDKs to add to client dropdown
Fix: Respect query tab parameter when existing server is already connected

v0.13.2

December 2025

Documentation Updates - Enhancement: Updated examples and documentation

to use preferred methods and APIs

v0.13.1

December 2025

v0.13.0

December 2025

Session Management & Architecture Improvements

Release aligned with mcp-use v1.11.0, featuring session management architecture and improved inspector capabilities.

Breaking Changes

Breaking: WebSocket transport support removed. Use streamable HTTP or SSE transports instead.
Breaking: LangChain adapter moved from main entry point to mcp-use/adapters subpath.

Session Management

Enhancement: Support for pluggable session management architecture with Redis support
Enhancement: Improved session persistence and connection handling
Enhancement: Better support for distributed deployments with cross-server notifications

Inspector Features

Enhancement: Enhanced connection handling with automatic 404 handling and re-initialization
Enhancement: Improved tool, resource, and prompt management
Enhancement: Better integration with session management architecture
Enhancement: Enhanced debugging capabilities with better error handling

Enhancement: Improved widget rendering and debugging for ChatGPT Apps
Enhancement: Better widget data handling and state management
Enhancement: Enhanced OpenAI component renderer with improved functionality

UI Improvements

Enhancement: Better connection settings UI
Enhancement: Improved server management interface
Enhancement: Enhanced tool result display and formatting

v0.12.6

December 2025

Dependency Updates - Enhancement: Updated dependencies

v0.12.5

December 2025

Dependency Updates - Enhancement: Updated dependencies

v0.12.4

December 2025

Dependency Updates - Enhancement: Updated dependencies

v0.12.3

December 2025

Bug Fixes - Fix: Deno 3 compatibility fixes

v0.12.2

December 2025

Bug Fixes - Fix: Updated Zod error handling

v0.12.1

December 2025

Bug Fixes - Fix: Zod import in official SDK - Enhancement: Added

repository metadata in package.json

v0.12.0

December 2025

Elicitation Support & API Improvements

Release aligned with mcp-use v1.10.0, featuring elicitation support and enhanced inspector capabilities.

Breaking Changes

Breaking: Server API renamed createMCPServer() factory function to MCPServer class constructor
Breaking: Session API replaced session.connector.tools, session.connector.callTool(), etc. with direct methods: session.tools, session.callTool(), etc.
Breaking: OAuth environment variables standardized to MCP_USE_OAUTH_* prefix

New Features

New: Elicitation support in inspector - servers can request user input through clients
New: Client Capabilities API with ctx.client.can() and ctx.client.capabilities()
New: Session Notifications API with ctx.sendNotification() and ctx.sendNotificationToSession()
New: Session Info API with ctx.session.sessionId to access current session ID
New: Resource Template Flat Structure support with uriTemplate directly on definition
New: Resource Template Callback Signatures supporting multiple signatures

Improvements

Enhancement: Enhanced type inference for resource template callbacks
Enhancement: Client capabilities tracking during initialization
Enhancement: Major documentation refactoring and restructuring
Enhancement: Edge runtime support improvements
Enhancement: Transport bug fixes

v0.11.0

December 2025

Elicitation Support - New: Added support for elicitation in inspector,

enabling servers to request user input through clients - Fix: Transport bug fixes

v0.10.1

November 2025

Dependency Updates - Enhancement: Updated dependencies

v0.10.0

November 2025

Sampling Support - New: Added sampling support in inspector with LLM

sampling capabilities - Fix: Long running sampling requests no longer timeout after 60 seconds - Enhancement: Better handling of extended sampling operations

v0.9.2

November 2025

Dependency Updates - Enhancement: Updated dependencies

v0.9.1

November 2025

Bug Fixes - Fix: Fixed bin entry issue for pnpm installation -

Enhancement: Standardized import statement formatting across multiple files

v0.9.0

November 2025

OAuth Authentication System

Release with complete OAuth 2.0 support and enhanced inspector capabilities.

New Features

New: Complete OAuth 2.0 authentication framework with built-in providers (Auth0, WorkOS, Supabase, Keycloak)
New: OAuth middleware and routes for server-side OAuth flow handling
New: OAuth callback component in inspector for authentication flows
New: Context storage with async local storage for request-scoped context
New: Response helpers for standardized HTTP responses and error handling
New: Runtime detection utilities for Node.js, Bun, and Deno environments

Inspector Enhancements

Enhancement: Enhanced useMcp hook with improved connection management and OAuth support
Enhancement: Enhanced inspector dashboard with OAuth configuration UI
Enhancement: Better authentication flow handling with OAuth integration
Enhancement: Improved auto-connect with enhanced connection recovery
Enhancement: Enhanced HTTP connectors with OAuth token handling

UI Improvements

Fix: Fixed scrolls in tools, resources, and prompts tab
Fix: Fixed models and API keys box in inspector chat
Fix: Fixed rendering of table, inline-code, code and images in inspector chat
Fix: Fixed padding of RPC panels
New: Added enum input display for tools
Enhancement: Bundle minification (9.7mb → 4.2 mb)

Bug Fixes

Fix: Switched to fork SDK to fix Zod errors on Deno runtime
Fix: Optimized dependencies

v0.8.3

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.8.2

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.8.1

October 2025

Bug Fixes - Fix: Fixed auto-connect proxy fallback behavior - Fix:

Fixed connection config updates not applying when connection already exists - Enhancement: Auto-switch (proxy fallback) now automatically enabled during auto-connect flow - Enhancement: Improved error messages for connection failures

v0.8.0

October 2025

Notifications, Sampling & OpenAI Apps SDK Integration

Release with bidirectional notifications, LLM sampling, and comprehensive OpenAI Apps SDK support.

New Features

New: Bidirectional notification support between clients and servers
New: LLM sampling capabilities allowing MCP tools to request completions from connected clients
New: Widget build ID support for cache busting in widget UI resources
New: Inspector notifications tab with real-time display
New: Server capabilities modal showing supported MCP features
New: RPC message logging support in inspector

OpenAI Apps SDK Integration

New: McpUseProvider component combining React setup (StrictMode, ThemeProvider, BrowserRouter, ErrorBoundary)
New: WidgetControls component with debug overlay and view controls (fullscreen, PIP)
New: useWidget hook for type-safe React adapter to OpenAI Apps SDK API
New: ErrorBoundary component for graceful error handling
New: Image component handling data URLs and public file paths
New: ThemeProvider for consistent theme management
New: WidgetInspectorControls for inspector-specific debugging
New: Console proxy toggle for iframe console logs
New: Product search result widget template with carousel and accordion components
New: Folder-based widget support with automatic detection
New: Public folder support for static assets

Inspector Enhancements

Enhancement: Enhanced OpenAIComponentRenderer with better height calculation and theme support
Enhancement: Enhanced ToolResultDisplay with multiple content types (text, image, audio, resource links)
Enhancement: Resizable panels with collapse support
Enhancement: Better widget security headers and CSP configuration
Enhancement: Enhanced widget data handling and state management

Improvements

Enhancement: Refactored HTTP transport to reuse sessions across requests
Enhancement: Session management with tracking and automatic cleanup
Enhancement: Roots support in connectors and session API
Enhancement: Enhanced search_tools with metadata
Enhancement: Improved SSR configuration with proper Vite settings

Bug Fixes

Fix: Fixed iframe height calculation issues
Fix: Fixed theme flashing on widget load
Fix: Fixed CSP header generation for dev mode
Fix: Fixed asset loading in dev widget proxy
Fix: Fixed console logging in iframe
Fix: Fixed widget state inspection
Fix: Fixed resizable panel collapse behavior

v0.7.1

October 2025

Bug Fixes & Improvements - Fix: Fixed auto-connect proxy fallback

behavior - Fix: Fixed connection config updates not applying when connection already exists - Enhancement: Auto-switch (proxy fallback) now automatically enabled during auto-connect flow - Enhancement: Improved error messages for connection failures

v0.7.0

October 2025

Code Mode Support - New: Code Mode feature allowing agents to execute

code using MCP tools - Enhancement: Enhanced MCPClient with code execution configuration - Enhancement: Comprehensive tests for code execution functionality

v0.6.1

October 2025

Bug Fixes - Fix: Various bug fixes and improvements

v0.6.0

October 2025

Edge Runtime Support - Major: Migrated to Hono framework for edge

runtime support - New: Runtime detection for Deno and Node.js environments

New: Enhanced inspector dashboard with improved connection handling - Enhancement: Better auto-connection logic with error handling and retry mechanisms

v0.5.3

October 2025

Bug Fixes & Improvements - Fix: Various bug fixes and stability

improvements - Enhancement: Dependency updates

v0.5.2

October 2025

Bug Fixes & Improvements - Fix: Various bug fixes and stability

improvements - Enhancement: Dependency updates

v0.5.1

October 2025

Bug Fixes - Fix: Various bug fixes and improvements

v0.5.0

October 2025

LangChain 1.0.0 Support - Major: Support for LangChain 1.0.0 - Fix:

Model type compatibility for LangChain 1.0.0 - Enhancement: Set CLI and inspector as dependencies

v0.4.13

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.12

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.11

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.10

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.9

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.8

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.7

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.6

October 2025

Dependency Updates - Enhancement: Updated dependencies

v0.4.5

October 2025

Bug Fixes - Fix: Fixed inspector chat formatting

v0.4.4

October 2025

Bug Fixes - Fix: Fixed inspector chat - Fix: Fixed inspector shadow

v0.4.3

October 2025

Major Refactoring & Apps SDK Support

Major refactoring with improved architecture and enhanced Apps SDK support.

Major Refactoring

Refactor: Server architecture refactored with major improvements to routing and middleware
Refactor: Removed legacy mcp-inspector.ts file in favor of modular architecture
Refactor: Added new cli.ts for improved command-line interface handling
Refactor: Added utils.ts and shared-utils-browser.ts for better code organization
Refactor: Enhanced shared-routes.ts with improved route handling and error management

Apps SDK Support

Enhancement: Enhanced widget data handling and state management
New: Added readResource method in MCPInspector for fetching resources based on server ID
Enhancement: Enhanced OpenAI component renderer to utilize serverId and readResource
Enhancement: Improved safe data serialization for widget state management

UI/UX Improvements

Enhancement: Enhanced ConnectionSettingsForm with copy configuration feature
Enhancement: Updated OpenAIComponentRenderer to dynamically adjust iframe height
Enhancement: Improved resource display with duration metrics and enhanced badge styling
Enhancement: Enhanced LayoutHeader with dynamic badge styling
Fix: Fixed scrollable tool parameters for better user experience
Enhancement: Added mobile-responsive hiding features

Bug Fixes

Fix: Fixed inspector mounting logic by simplifying server URL handling
Fix: Fixed linting issues across multiple components
Fix: Fixed server configuration for improved stability

v0.4.2

October 2025

Auto-Connection & Multi-Server Support - New: Auto-connection

functionality - inspector now automatically connects to MCP servers on startup

New: Multi-server support - enhanced support for connecting to multiple MCP servers simultaneously - New: Client-side chat functionality with improved message handling - New: Resource handling with enhanced chat components - Enhancement: Streamlined routing with refactored server and client routing - Enhancement: Enhanced connection handling with improved auto-connection logic - Enhancement: Better UI components with updated Layout, ChatTab, and ToolsTab components - Fix: Fixed connection handling in InspectorDashboard - Fix: Improved error messages in useMcp hook

v0.4.1

October 2025

Bug Fixes - Fix: Minor fixes and improvements

v0.4.0

October 2025

Major Refactor & Apps SDK Initial Integration

Major refactor aligning inspector with mcp-use TypeScript package and initial Apps SDK integration.

Major Refactoring

Refactor: Migrated from CommonJS to ESM format
Refactor: Added input validation for port and URL
Refactor: Improved error handling and logging
Refactor: Added open package for cross-platform browser launching
Refactor: Reorganized component structure (moved to src/client/components/)
Refactor: Refactored ChatTab to use streaming API and custom hooks
Refactor: Enhanced InspectorDashboard with auto-connect functionality
Refactor: Improved CommandPalette with better item selection
Refactor: Updated routing to use query parameters

New Components

New: Chat components: AssistantMessage, UserMessage, ToolCallDisplay, MCPUIResource, MessageList
New: UI components: aurora-background, text-shimmer, sheet, switch, kbd, shimmer-button, status-dot
New: Form components: ConnectionSettingsForm, ServerDropdown
New: Tool components: ToolExecutionPanel, ToolResultDisplay, SaveRequestDialog
New: Resource components: ResourceResultDisplay, ResourcesList

Apps SDK Integration

New: OpenAI Apps SDK integration with UI resource type
New: Enhanced MCP-UI adapter for Apps SDK metadata
New: Resource URI format supporting ui://widget/ scheme

Bug Fixes

Fix: Fixed CLI binary format and package configuration
Fix: Changed CLI build format from CommonJS to ESM
Fix: Added input validation for port and URL arguments
Fix: Improved error logging in API routes
Fix: Fixed async/await bugs in static file serving

​mcp-use v1.32.0

​mcp-use v1.31.1

​OAuth credential lifecycle & mcp-use v1.31.0

​mcp-use v1.30.2

​Widget status label pointer-events fix

​mcp-use v1.30.0

​mcp-use v1.29.1

​Local LLM provider, image tool results & widget display modes

​Widget preview route & dark-mode scrollbars

​MCP App width fix in chat

​OpenRouter, pre-registered OAuth & telemetry env

​E2E alignment for Settings dropdown

​OAuth single-tab flow, embed fixes & Hono detection

​Inline elicitation & social meta tags

​Hosted chat runtime, LLM providers & chat export

​Navbar, theme & debug controls

​Subpath OAuth, chat UX & tab persistence

​Embedded inspector without LangChain

​Stream protocol, aliases & chat tooling

​Dependency & bundling alignment

​Peer Dependency Alignment & MCP UI v7

​Chat History Tool Results & ErrorBoundary Customization

​Tunnel Controls & Vite 8

​Dependency Updates

​Dependency Update

​Sandbox Host Fix

​Embedded Inspector Proxy Fix

​Chat Components & Dark Mode Fixes

​Inspector Embedding & MCP Apps

​Dependency Update

​Embedded Chat Improvements

​Standalone Deployment Fix

​Connection & Widget Display Improvements

​Widget Status Texts & CSP Fixes

​Iframe Console & CSP Panel

​Dependency Update

​Bulk Paste & Tool Definition Enhancements

​MCPApps & Widget Improvements

​Chat Quick Questions & Enhanced UX

​Chat Enhancements

​Loading & Error Handling

​Developer Experience

​Dependencies

​Tool Arguments, Streaming Input & Elicitation Enum Support

​Log Noise Reduction

​Widget Readiness & Iframe Global Sync Fixes

​Chat Conversion & Error Copy Fixes

​Dependency Update

​Iframe Embedding & Reverse Proxy Support

​E2E Testing & Refresh Features

​E2E Testing Infrastructure

​Testability Improvements

​UI Enhancements

​Widget Improvements

​Server Improvements

​Dependencies

​Dependency Update

​Inspector Fixes

​Dependency Update

​Chat Prompts & Multimodal Support

​Chat Prompts

​Multimodal Support

​Dependencies

​Theme URL Parameter Fix

​HMR File Watcher Fix

​Dependency Update

​MCP Apps Support & Landing Pages

​MCP Apps Support

​Landing Pages

​Bug Fixes & Security

​Dependencies

​UI Enhancements & Connection Handling

​UI Enhancements

​Widget Security

​Connection Handling

​Dependencies

​Tool Output Display Fix

​RPC Message Management & LangChain Fixes

​RPC Message Management

​Resource Properties Management

mcp-use v1.32.0

mcp-use v1.31.1

OAuth credential lifecycle & mcp-use v1.31.0

mcp-use v1.30.2

Widget status label pointer-events fix

mcp-use v1.30.0

mcp-use v1.29.1

Local LLM provider, image tool results & widget display modes

Widget preview route & dark-mode scrollbars

MCP App width fix in chat

OpenRouter, pre-registered OAuth & telemetry env

E2E alignment for Settings dropdown

OAuth single-tab flow, embed fixes & Hono detection

Inline elicitation & social meta tags

Hosted chat runtime, LLM providers & chat export

Navbar, theme & debug controls

Subpath OAuth, chat UX & tab persistence

Embedded inspector without LangChain

Stream protocol, aliases & chat tooling

Dependency & bundling alignment

Peer Dependency Alignment & MCP UI v7

Chat History Tool Results & ErrorBoundary Customization

Tunnel Controls & Vite 8

Dependency Updates

Dependency Update

Sandbox Host Fix

Embedded Inspector Proxy Fix

Chat Components & Dark Mode Fixes

Inspector Embedding & MCP Apps

Dependency Update

Embedded Chat Improvements

Standalone Deployment Fix

Connection & Widget Display Improvements

Widget Status Texts & CSP Fixes

Iframe Console & CSP Panel

Dependency Update

Bulk Paste & Tool Definition Enhancements

MCPApps & Widget Improvements

Chat Quick Questions & Enhanced UX

Chat Enhancements

Loading & Error Handling

Developer Experience

Dependencies

Tool Arguments, Streaming Input & Elicitation Enum Support

Log Noise Reduction

Widget Readiness & Iframe Global Sync Fixes

Chat Conversion & Error Copy Fixes

Dependency Update

Iframe Embedding & Reverse Proxy Support

E2E Testing & Refresh Features

E2E Testing Infrastructure

Testability Improvements

UI Enhancements

Widget Improvements

Server Improvements

Dependencies

Dependency Update

Inspector Fixes

Dependency Update

Chat Prompts & Multimodal Support

Chat Prompts

Multimodal Support

Dependencies

Theme URL Parameter Fix

HMR File Watcher Fix

Dependency Update

MCP Apps Support & Landing Pages

MCP Apps Support

Landing Pages

Bug Fixes & Security

Dependencies

UI Enhancements & Connection Handling

UI Enhancements

Widget Security

Connection Handling

Dependencies

Tool Output Display Fix

RPC Message Management & LangChain Fixes

RPC Message Management

Resource Properties Management