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It exposes connection state (connecting, connected, disconnecting, disconnected, error) and error details through hook return values, enabling React components to reactively render UI based on connection status without manual socket or transport layer management.","intents":["I want to connect my React app to an MCP server without managing WebSocket/HTTP transport details","I need automatic reconnection with exponential backoff when the MCP server becomes unavailable","I want to track connection state changes and display loading/error states in my UI","I need to handle connection lifecycle events (connect, disconnect, error) declaratively in React"],"best_for":["React developers building AI-powered applications that consume MCP servers","Teams integrating MCP protocol support into existing React applications","Developers who want to avoid low-level transport protocol management"],"limitations":["React 19.0.0+ required — no support for older React versions","Hook-based API means it cannot be used outside React functional components","Connection state is component-scoped — requires context provider for app-wide state sharing","No built-in persistence of connection state across page reloads"],"requires":["React 19.0.0 or higher","@modelcontextprotocol/sdk ^1.11.0","MCP server endpoint URL (HTTP or SSE)","TypeScript 4.5+ (for type safety, though JavaScript usage possible)"],"input_types":["MCP server configuration object (url, transport type, auth params)","OAuth callback URL for authentication flows"],"output_types":["Hook return object with connection state, error details, and tool execution methods","React component re-renders triggered by state changes"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_1","uri":"capability://tool.use.integration.oauth.2.0.popup.based.authentication.flow.with.fallback.support","name":"oauth 2.0 popup-based authentication flow with fallback support","description":"The library provides an onMcpAuthorization function that orchestrates OAuth 2.0 authentication by opening a popup window to the MCP server's authorization endpoint, capturing the callback through a configurable callback URL route, and exchanging the authorization code for credentials. It includes fallback mechanisms for browsers that block popups and integrates with multiple routing frameworks (React Router, Next.js Pages, custom setups) through a flexible callback handler pattern.","intents":["I need to authenticate users with an MCP server that requires OAuth 2.0 before tool execution","I want to handle OAuth callbacks in my React Router or Next.js application without manual setup","I need a fallback authentication method if the user's browser blocks OAuth popups","I want to securely exchange authorization codes for access tokens in my MCP connection"],"best_for":["React applications integrating with OAuth-protected MCP servers","Teams using React Router, Next.js, or custom routing systems","Developers who need to support users with popup-blocking browsers"],"limitations":["Requires MCP server to support OAuth 2.0 authorization code flow","Popup-based flow may be blocked by browser security policies or user settings","Callback URL must be pre-registered with the MCP server's OAuth provider","No built-in token refresh — requires manual token management for long-lived sessions"],"requires":["MCP server with OAuth 2.0 authorization endpoint","Callback route configured in application (e.g., /oauth/callback)","Client ID and Client URI registered with MCP server","React Router, Next.js, or custom routing framework"],"input_types":["OAuth configuration: clientName, clientUri, callbackUrl","MCP server authorization endpoint URL"],"output_types":["Authorization code exchanged for access token","Authenticated MCP connection ready for tool execution","Error details if authentication fails"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_2","uri":"capability://tool.use.integration.type.safe.tool.invocation.with.schema.based.argument.validation","name":"type-safe tool invocation with schema-based argument validation","description":"The useMcp hook exposes a callTool(name, args) method that executes MCP tools with type safety enforced through the MCP protocol's schema definitions. The library validates arguments against the tool's declared schema before transmission and provides structured error responses if validation fails or execution errors occur. This enables IDE autocomplete and compile-time type checking for tool arguments when used with TypeScript.","intents":["I want to call MCP tools from my React component with IDE autocomplete for argument names and types","I need argument validation before sending tool requests to the MCP server to catch errors early","I want structured error responses when tool execution fails so I can handle different error types","I need to pass complex nested arguments to tools without manually serializing them"],"best_for":["TypeScript-based React applications where type safety is a priority","Teams building AI agents that invoke multiple MCP tools with complex arguments","Developers who want compile-time validation of tool arguments"],"limitations":["Argument validation only occurs if MCP server provides schema definitions","No runtime type coercion — arguments must match schema types exactly","Error handling is MCP server-dependent — error message quality varies by server implementation","TypeScript support requires TypeScript 4.5+ and proper type generation from MCP schemas"],"requires":["MCP server that declares tool schemas with argument definitions","TypeScript 4.5+ for full type safety (JavaScript usage possible but without IDE support)","Active MCP connection established via useMcp hook"],"input_types":["Tool name (string)","Tool arguments (object matching tool schema)"],"output_types":["Tool execution result (structure defined by MCP server)","Error object with error code and message if execution fails"],"categories":["tool-use-integration","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_3","uri":"capability://tool.use.integration.dual.transport.protocol.support.with.automatic.detection.http.and.server.sent.events","name":"dual-transport protocol support with automatic detection (http and server-sent events)","description":"The useMcp hook automatically detects and selects between HTTP long-polling and Server-Sent Events (SSE) transports based on MCP server capabilities and network conditions. The library abstracts transport selection logic so developers specify only the server URL, and the underlying transport layer is chosen transparently. This enables seamless fallback from SSE to HTTP if the server doesn't support streaming, without requiring explicit configuration.","intents":["I want to connect to MCP servers that support different transport protocols without manual configuration","I need automatic fallback from SSE to HTTP if the server doesn't support streaming","I want to avoid managing transport-layer details and let the library choose the best protocol","I need reliable connections over networks that may block WebSocket or SSE connections"],"best_for":["Applications deployed in environments with network restrictions (corporate proxies, firewalls)","Teams supporting multiple MCP server implementations with varying transport support","Developers who want transport abstraction without manual protocol selection"],"limitations":["HTTP long-polling has higher latency than SSE due to polling intervals","Automatic detection adds ~100-200ms overhead on initial connection","SSE connections may be terminated by proxies with aggressive timeout policies","No explicit control over transport selection — developers cannot force a specific protocol"],"requires":["MCP server supporting HTTP or SSE transport","Network connectivity to MCP server endpoint","Browser with fetch API support (for HTTP) or EventSource API support (for SSE)"],"input_types":["MCP server URL (HTTP or HTTPS)"],"output_types":["Established connection using automatically-selected transport protocol","Connection state and error details if transport negotiation fails"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_4","uri":"capability://automation.workflow.configurable.automatic.reconnection.with.exponential.backoff","name":"configurable automatic reconnection with exponential backoff","description":"The useMcp hook accepts an autoReconnect configuration parameter (boolean or number) that enables automatic reconnection attempts when the MCP connection drops unexpectedly. When enabled with a numeric value, it implements exponential backoff with configurable delay intervals, preventing connection storms and allowing the server time to recover. The hook tracks reconnection attempts and exposes connection state changes through the hook return value.","intents":["I want my app to automatically reconnect to the MCP server if the connection drops","I need to configure reconnection delays to avoid overwhelming the server with connection attempts","I want to detect when the app is in a reconnecting state so I can show appropriate UI feedback","I need reliable long-lived connections that survive temporary network interruptions"],"best_for":["Applications requiring high availability and resilience to network interruptions","Long-running React applications that maintain persistent MCP connections","Teams deploying to unreliable networks or mobile environments"],"limitations":["Exponential backoff delays can result in significant reconnection latency (configurable but not automatic)","No maximum reconnection attempt limit — will retry indefinitely if enabled","Reconnection state is component-scoped — requires context provider for app-wide visibility","Does not handle authentication token expiration — requires manual token refresh logic"],"requires":["Active useMcp hook with autoReconnect configuration","MCP server that supports multiple connection attempts","Network connectivity (eventually) for reconnection to succeed"],"input_types":["autoReconnect: boolean (true for default backoff) or number (custom delay in milliseconds)"],"output_types":["Connection state transitions (connecting, connected, disconnected, error)","Error details if reconnection attempts fail"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_5","uri":"capability://automation.workflow.comprehensive.connection.state.machine.with.explicit.error.tracking","name":"comprehensive connection state machine with explicit error tracking","description":"The useMcp hook implements a state machine with four explicit connection states (connecting, connected, disconnecting, disconnected) plus an error state that captures detailed error information. The hook exposes both the current state and error details through its return value, enabling components to render different UI based on connection status and error type. The state machine enforces valid transitions and prevents invalid operations (e.g., calling tools while disconnected).","intents":["I want to display different UI based on whether the MCP connection is connecting, connected, or disconnected","I need to show error messages to users when connection fails and explain why","I want to disable tool-calling buttons when the connection is not active","I need to track connection state changes for debugging and monitoring"],"best_for":["React applications with complex connection-dependent UI logic","Teams building user-facing AI applications that need clear connection status feedback","Developers who want to implement retry UI or connection troubleshooting flows"],"limitations":["State machine is component-scoped — requires context provider for app-wide state sharing","Error details depend on MCP server error responses — error messages vary by server implementation","No built-in error recovery suggestions — developers must implement custom error handling logic","State transitions are synchronous — no async state change hooks for side effects"],"requires":["Active useMcp hook in a React functional component","React component that can conditionally render based on state values"],"input_types":["MCP server configuration and connection parameters"],"output_types":["Connection state: 'connecting' | 'connected' | 'disconnecting' | 'disconnected' | 'error'","Error object with error code and message (when state is 'error')"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_6","uri":"capability://tool.use.integration.dual.export.npm.package.structure.with.separate.react.and.utility.entry.points","name":"dual-export npm package structure with separate react and utility entry points","description":"The use-mcp library is distributed as an NPM package with two entry points: the root export (.) provides general utilities like onMcpAuthorization for OAuth handling, while the React export (./react) provides the useMcp hook and React-specific components. This dual-export structure allows developers to use OAuth utilities in non-React contexts (e.g., Node.js backends) while keeping React dependencies optional for utility-only consumers. The build system uses tsup to compile TypeScript to both CommonJS and ES modules.","intents":["I want to use MCP OAuth utilities in my Node.js backend without importing React","I need to import the useMcp hook in my React app without bundling unnecessary utilities","I want both CommonJS and ES module support for different build environments","I need TypeScript type definitions for IDE autocomplete and type checking"],"best_for":["Monorepo projects where some packages need OAuth utilities without React","Teams with mixed React and Node.js codebases that share MCP integration logic","Developers who want to minimize bundle size by importing only needed exports"],"limitations":["Requires understanding of dual-export package structure — not immediately obvious which export to use","TypeScript configuration must be set up correctly to resolve conditional exports","CommonJS and ES module interop can cause issues in certain build environments","No built-in tree-shaking — developers must manually import from correct entry point to avoid unused code"],"requires":["Node.js 14+ with ES module support","npm or yarn package manager","TypeScript 4.5+ (for type definitions, though JavaScript usage possible)"],"input_types":["Package import statements (from 'use-mcp' or 'use-mcp/react')"],"output_types":["Exported functions and hooks (onMcpAuthorization, useMcp, etc.)","TypeScript type definitions for IDE support"],"categories":["tool-use-integration","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_7","uri":"capability://tool.use.integration.framework.agnostic.oauth.callback.route.integration.with.routing.adapter.pattern","name":"framework-agnostic oauth callback route integration with routing adapter pattern","description":"The onMcpAuthorization function provides a routing adapter pattern that integrates OAuth callbacks with React Router, Next.js Pages, and custom routing setups through a flexible handler interface. Developers define a callback route in their routing framework and pass the authorization code to onMcpAuthorization, which exchanges it for credentials and returns the authenticated connection. This pattern decouples the OAuth flow from specific routing frameworks, allowing the same logic to work across different application architectures.","intents":["I want to handle OAuth callbacks in my React Router application without manual setup","I need to integrate OAuth callbacks in my Next.js Pages application","I want to use custom routing and still integrate OAuth flows","I need to exchange authorization codes for MCP credentials in my callback route"],"best_for":["React applications using React Router for routing","Next.js applications using Pages router (not App router)","Teams with custom routing implementations who want OAuth integration","Developers who want to avoid framework-specific OAuth libraries"],"limitations":["Requires manual route definition in the application's routing framework","Callback URL must be pre-registered with the MCP server's OAuth provider","Next.js App Router support is unclear — documentation focuses on Pages router","No built-in session management — developers must handle token storage and refresh"],"requires":["React Router, Next.js Pages, or custom routing framework","Callback route defined in application (e.g., /oauth/callback)","Authorization code passed from OAuth provider to callback route","MCP server OAuth endpoint configured with callback URL"],"input_types":["Authorization code from OAuth provider","MCP server configuration (clientName, clientUri, callbackUrl)"],"output_types":["Authenticated MCP connection ready for tool execution","Error details if authorization code exchange fails"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-modelcontextprotocol-use-mcp__cap_8","uri":"capability://automation.workflow.comprehensive.debugging.and.logging.system.with.configurable.verbosity","name":"comprehensive debugging and logging system with configurable verbosity","description":"The useMcp hook accepts a debug configuration parameter that enables detailed logging of MCP protocol messages, connection state transitions, and error events. When enabled, the hook populates a log array with timestamped entries that capture the full lifecycle of MCP communication, enabling developers to diagnose connection issues and protocol violations. The logging system is designed to be low-overhead when disabled and provides structured log entries for programmatic analysis.","intents":["I want to debug MCP connection issues by seeing detailed protocol messages","I need to understand why tool calls are failing by inspecting the full request/response cycle","I want to monitor MCP communication in production for troubleshooting","I need to export connection logs for debugging and support purposes"],"best_for":["Developers debugging MCP integration issues during development","Teams deploying MCP-based applications who need production debugging capabilities","Support teams investigating user-reported connection problems"],"limitations":["Logging adds memory overhead — log array grows unbounded if not cleared","No built-in log rotation or persistence — logs are lost on page reload","Sensitive data (auth tokens, API keys) may be logged if not filtered","Verbose logging can impact performance in high-throughput scenarios"],"requires":["Active useMcp hook with debug: true configuration","Browser console or logging infrastructure to capture log output"],"input_types":["debug: boolean configuration parameter"],"output_types":["Log array with timestamped entries capturing MCP protocol messages and state transitions","Console output (if browser console is available)"],"categories":["automation-workflow","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":36,"verified":false,"data_access_risk":"high","permissions":["React 19.0.0 or higher","@modelcontextprotocol/sdk ^1.11.0","MCP server endpoint URL (HTTP or SSE)","TypeScript 4.5+ (for type safety, though JavaScript usage possible)","MCP server with OAuth 2.0 authorization endpoint","Callback route configured in application (e.g., /oauth/callback)","Client ID and Client URI registered with MCP server","React Router, Next.js, or custom routing framework","MCP server that declares tool schemas with argument definitions","TypeScript 4.5+ for full type safety (JavaScript usage possible but without IDE support)"],"failure_modes":["React 19.0.0+ required — no support for older React versions","Hook-based API means it cannot be used outside React functional components","Connection state is component-scoped — requires context provider for app-wide state sharing","No built-in persistence of connection state across page reloads","Requires MCP server to support OAuth 2.0 authorization code flow","Popup-based flow may be blocked by browser security policies or user settings","Callback URL must be pre-registered with the MCP server's OAuth provider","No built-in token refresh — requires manual token management for long-lived sessions","Argument validation only occurs if MCP server provides schema definitions","No runtime type coercion — arguments must match schema types exactly","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.41830633265495487,"quality":0.28,"ecosystem":0.39999999999999997,"match_graph":0.25,"freshness":0.6,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-05-24T12:16:22.065Z","last_scraped_at":"2026-05-03T14:23:41.032Z","last_commit":"2026-01-12T22:50:06Z"},"community":{"stars":1030,"forks":81,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=mcp-modelcontextprotocol-use-mcp","compare_url":"https://unfragile.ai/compare?artifact=mcp-modelcontextprotocol-use-mcp"}},"signature":"F3D26SFLjxgb/jb9aOQEZKR+u2lQyUUaXxJt6omEUAyzOYtfsvphxDKyFfNG7kGGJgF6W+zNv+ORByUZJnYOCA==","signedAt":"2026-06-20T10:10:04.969Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/mcp-modelcontextprotocol-use-mcp","artifact":"https://unfragile.ai/mcp-modelcontextprotocol-use-mcp","verify":"https://unfragile.ai/api/v1/verify?slug=mcp-modelcontextprotocol-use-mcp","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}