{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"npm-mcp-auth","slug":"mcp-auth","name":"mcp-auth","type":"mcp","url":"https://github.com/mcp-auth/js#readme","page_url":"https://unfragile.ai/mcp-auth","categories":["mcp-servers"],"tags":["modelcontextprotocol","mcp","oauth","openid","connect","oidc"],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"npm-mcp-auth__cap_0","uri":"capability://tool.use.integration.oauth.2.0.openid.connect.server.integration.for.mcp","name":"oauth 2.0 / openid connect server integration for mcp","description":"Enables MCP servers to authenticate clients using industry-standard OAuth 2.0 and OpenID Connect (OIDC) protocols. Implements authorization code flow, token validation, and identity provider integration patterns, allowing MCP servers to delegate authentication to external identity providers (Auth0, Okta, Google, etc.) rather than managing credentials directly. Abstracts provider-specific OAuth/OIDC implementations behind a unified MCP-compatible interface.","intents":["I want my MCP server to require OAuth authentication without building auth from scratch","I need to integrate my MCP server with an existing identity provider like Auth0 or Okta","I want to support multiple OAuth providers (Google, GitHub, Microsoft) in a single MCP server","I need to validate and refresh OAuth tokens for MCP client requests"],"best_for":["Teams deploying MCP servers in enterprise environments with existing identity infrastructure","Developers building multi-tenant MCP applications requiring user isolation","Organizations migrating from REST APIs to MCP and needing to preserve OAuth authentication"],"limitations":["Requires pre-configured OAuth application credentials from identity provider","Token refresh logic depends on provider's token expiration policies — no universal refresh strategy","PKCE support and implicit flow handling varies by provider integration","No built-in token revocation — relies on provider's revocation endpoints"],"requires":["Node.js 16+ or compatible JavaScript runtime","OAuth 2.0 / OIDC provider with application credentials (client ID, client secret)","MCP server framework (e.g., @modelcontextprotocol/sdk)","Network access to identity provider's authorization and token endpoints"],"input_types":["OAuth authorization code (from redirect)","Access token (JWT or opaque)","Refresh token (if supported by provider)","OIDC discovery endpoint URL"],"output_types":["Validated user identity object","Access token with expiration metadata","User claims (email, name, roles from OIDC)","Authorization decision (allow/deny)"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_1","uri":"capability://tool.use.integration.plug.and.play.authentication.middleware.for.mcp.servers","name":"plug-and-play authentication middleware for mcp servers","description":"Provides pre-built, composable authentication middleware that can be attached to MCP server request handlers with minimal configuration. Implements middleware pattern for intercepting MCP requests, validating credentials, and enforcing authentication policies before tools/resources are exposed. Supports declarative configuration of which MCP capabilities require authentication and what credential types are accepted.","intents":["I want to add authentication to my MCP server without rewriting request handling logic","I need to enforce different auth policies on different MCP tools or resources","I want to quickly prototype an authenticated MCP server with minimal boilerplate","I need to support multiple authentication methods (OAuth, API keys, JWT) on the same server"],"best_for":["Developers building MCP servers who want authentication without architectural changes","Teams prototyping authenticated MCP applications quickly","Solo developers managing multiple MCP servers with consistent auth policies"],"limitations":["Middleware composition order matters — incorrect ordering can bypass auth checks","No built-in rate limiting or brute-force protection — requires additional middleware","Credential caching strategy is application-dependent; no universal caching layer","Async auth validation adds latency to every MCP request"],"requires":["MCP server framework with middleware/handler support","Node.js 16+","Authentication provider or credential store (OAuth provider, API key database, etc.)"],"input_types":["MCP request object with headers/metadata","Credential data (token, API key, etc.)","Authentication policy configuration (JSON/YAML)"],"output_types":["Authenticated request context with user identity","Authorization decision (allow/deny/challenge)","Error response if authentication fails"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_2","uri":"capability://tool.use.integration.multi.provider.identity.federation.for.mcp.clients","name":"multi-provider identity federation for mcp clients","description":"Abstracts authentication across multiple identity providers (Auth0, Okta, Google, GitHub, custom OIDC) behind a unified client interface. Handles provider-specific OAuth flows, token formats, and claim mappings, normalizing user identity into a standard schema regardless of which provider authenticated the user. Enables MCP clients to connect to servers that support multiple authentication sources without provider-specific logic.","intents":["I want my MCP client to work with servers authenticated by different identity providers","I need to support users logging in via Google, GitHub, or corporate SSO in the same application","I want to normalize user identity claims from different providers into a consistent format","I need to switch identity providers without changing client code"],"best_for":["Multi-tenant MCP applications serving users from different organizations","Teams building MCP clients that need to work across enterprise and consumer identity providers","Developers migrating from one identity provider to another"],"limitations":["Provider-specific claims (roles, groups, permissions) may not map cleanly across providers","Token formats vary (JWT vs opaque) — requires provider-specific validation logic","No automatic provider discovery — requires explicit configuration for each provider","Claim normalization is lossy — custom provider claims may be dropped"],"requires":["Configuration for each supported identity provider (client ID, discovery URL, etc.)","Network access to all configured identity providers","MCP client framework with authentication hook support"],"input_types":["Provider identifier (e.g., 'auth0', 'google', 'okta')","Provider-specific token or authorization code","Provider configuration (discovery URL, client credentials)"],"output_types":["Normalized user identity object with standard claims (sub, email, name)","Provider-agnostic access token","User metadata for authorization decisions"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_3","uri":"capability://safety.moderation.jwt.token.validation.and.claims.extraction.for.mcp","name":"jwt token validation and claims extraction for mcp","description":"Validates JWT tokens passed in MCP requests, verifies signatures against provider public keys, and extracts claims for authorization decisions. Implements JWT validation patterns including signature verification, expiration checking, issuer validation, and audience validation. Supports both symmetric (HS256) and asymmetric (RS256, ES256) signing algorithms and handles key rotation from OIDC discovery endpoints.","intents":["I need to validate JWT tokens in MCP requests before processing them","I want to extract user claims from JWTs to make authorization decisions","I need to verify JWT signatures against an identity provider's public keys","I want to handle JWT key rotation automatically from OIDC discovery"],"best_for":["MCP servers using JWT-based authentication with external identity providers","Teams implementing fine-grained authorization based on JWT claims","Applications requiring cryptographic token validation"],"limitations":["Requires access to provider's public keys (via OIDC discovery or manual configuration)","No built-in token caching — each validation requires signature verification","Clock skew between client and server can cause valid tokens to be rejected","Custom claim validation requires application-specific logic outside this capability"],"requires":["JWT token in MCP request (typically in Authorization header or metadata)","Access to identity provider's public keys or OIDC discovery endpoint","JWT validation library (e.g., jsonwebtoken, jose)"],"input_types":["JWT token string","Expected issuer URL","Expected audience claim","Public key or OIDC discovery URL"],"output_types":["Decoded JWT payload with claims","Validation result (valid/invalid with reason)","Extracted user identity and metadata"],"categories":["safety-moderation","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_4","uri":"capability://safety.moderation.api.key.authentication.and.validation.for.mcp","name":"api key authentication and validation for mcp","description":"Implements API key-based authentication for MCP clients, supporting key generation, validation, and revocation. Handles API key storage (hashed in database), lookup, and validation against incoming MCP requests. Supports key scoping (limiting keys to specific tools/resources) and expiration policies. Provides simpler alternative to OAuth for service-to-service MCP communication.","intents":["I want to issue API keys to MCP clients for programmatic access","I need to validate API keys in MCP requests without external identity provider calls","I want to revoke compromised API keys immediately","I need to scope API keys to specific MCP tools or resources"],"best_for":["MCP servers supporting service-to-service authentication","Teams building internal MCP tools that don't need full OAuth complexity","Applications requiring simple, fast API key validation"],"limitations":["API keys are static credentials — no automatic refresh like OAuth tokens","Key rotation requires manual client updates","No built-in key expiration enforcement — requires application logic","Compromised keys require immediate revocation; no token-like short-lived credentials","Scoping logic is application-specific; no standardized scope format"],"requires":["Persistent key storage (database, file system, or key management service)","Key generation mechanism (cryptographically secure random string generation)","MCP server with request metadata access"],"input_types":["API key string (from MCP request header or metadata)","Key scope/permissions configuration","Key expiration policy"],"output_types":["Validation result (valid/invalid)","Associated client identity and scopes","Key metadata (creation date, last used, expiration)"],"categories":["safety-moderation","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_5","uri":"capability://automation.workflow.credential.refresh.and.token.lifecycle.management.for.mcp","name":"credential refresh and token lifecycle management for mcp","description":"Manages OAuth token refresh, expiration tracking, and credential lifecycle for MCP clients and servers. Automatically refreshes expired tokens using refresh tokens, handles token rotation, and maintains credential state across MCP sessions. Implements exponential backoff for failed refresh attempts and provides hooks for credential update events.","intents":["I want my MCP client to automatically refresh expired OAuth tokens","I need to handle token expiration gracefully without interrupting MCP communication","I want to track when credentials expire and refresh them proactively","I need to rotate credentials securely without dropping active MCP connections"],"best_for":["Long-running MCP client applications that need persistent authentication","MCP servers managing credentials for downstream service calls","Teams requiring automatic credential rotation for security compliance"],"limitations":["Refresh token availability depends on OAuth provider — not all providers support refresh tokens","Refresh token rotation (provider-issued new refresh tokens) requires state management","Failed refresh attempts can cascade if provider is unavailable — requires fallback strategy","Token expiration times are provider-specific; no universal expiration handling","Concurrent refresh requests can cause race conditions if not properly synchronized"],"requires":["OAuth provider supporting refresh tokens","Persistent state storage for refresh tokens (secure, encrypted)","Timer/scheduler for proactive token refresh","Network access to OAuth provider's token endpoint"],"input_types":["Refresh token from OAuth provider","Token expiration timestamp","Refresh policy configuration (proactive vs reactive)"],"output_types":["New access token","Updated refresh token (if provider rotates)","New expiration timestamp","Refresh event notifications"],"categories":["automation-workflow","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_6","uri":"capability://safety.moderation.authentication.error.handling.and.challenge.responses.for.mcp","name":"authentication error handling and challenge responses for mcp","description":"Provides standardized error handling for authentication failures in MCP, including invalid credentials, expired tokens, and missing authentication. Generates appropriate MCP error responses with actionable error messages and challenge directives (e.g., 'please re-authenticate'). Implements retry logic for transient auth failures and distinguishes between client errors (invalid credentials) and server errors (provider unavailable).","intents":["I want to return clear error messages when MCP clients fail authentication","I need to tell clients to re-authenticate when their tokens expire","I want to distinguish between invalid credentials and temporary provider failures","I need to implement retry logic for transient authentication errors"],"best_for":["MCP servers providing good developer experience with clear auth error messages","Applications requiring robust error handling for authentication failures","Teams building MCP clients that need to handle auth errors gracefully"],"limitations":["Error message clarity depends on provider's error responses — some providers return vague errors","Retry logic can mask underlying auth configuration issues","No standardized MCP error format — error handling varies by MCP implementation","Challenge directives (re-auth prompts) require client-side handling logic"],"requires":["MCP server framework with error response support","Authentication provider error documentation","Client-side error handling logic"],"input_types":["Authentication failure reason (invalid token, expired, missing, etc.)","Provider error response","Request context (which tool/resource failed auth)"],"output_types":["MCP error response with error code and message","Challenge directive (if applicable)","Retry guidance (if transient error)","Logging/monitoring data for auth failures"],"categories":["safety-moderation","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm-mcp-auth__cap_7","uri":"capability://automation.workflow.configuration.management.for.authentication.providers","name":"configuration management for authentication providers","description":"Centralizes configuration for multiple authentication providers (OAuth, OIDC, API keys, etc.) with support for environment variables, config files, and runtime updates. Validates provider configuration (client IDs, secrets, discovery URLs) and provides sensible defaults. Supports configuration inheritance and override patterns for different deployment environments (dev, staging, production).","intents":["I want to configure multiple OAuth providers in my MCP server without hardcoding credentials","I need different auth configurations for dev, staging, and production environments","I want to validate my auth configuration before starting the MCP server","I need to update auth configuration at runtime without restarting"],"best_for":["Teams deploying MCP servers across multiple environments","Applications supporting multiple authentication providers","Developers managing secrets and credentials securely"],"limitations":["Configuration validation is provider-specific — no universal validation schema","Runtime configuration updates require careful synchronization to avoid auth failures","Environment variable naming conventions vary; no standardized config key format","Secrets management depends on deployment platform (Kubernetes, Docker, etc.)"],"requires":["Configuration source (environment variables, config file, or config service)","Provider-specific configuration parameters (client ID, client secret, discovery URL, etc.)","Secrets management solution for storing sensitive credentials"],"input_types":["Configuration object or file (JSON, YAML, environment variables)","Provider type identifier","Environment name (dev, staging, production)"],"output_types":["Validated provider configuration object","Configuration validation errors (if invalid)","Merged configuration with environment-specific overrides"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":41,"verified":false,"data_access_risk":"high","permissions":["Node.js 16+ or compatible JavaScript runtime","OAuth 2.0 / OIDC provider with application credentials (client ID, client secret)","MCP server framework (e.g., @modelcontextprotocol/sdk)","Network access to identity provider's authorization and token endpoints","MCP server framework with middleware/handler support","Node.js 16+","Authentication provider or credential store (OAuth provider, API key database, etc.)","Configuration for each supported identity provider (client ID, discovery URL, etc.)","Network access to all configured identity providers","MCP client framework with authentication hook support"],"failure_modes":["Requires pre-configured OAuth application credentials from identity provider","Token refresh logic depends on provider's token expiration policies — no universal refresh strategy","PKCE support and implicit flow handling varies by provider integration","No built-in token revocation — relies on provider's revocation endpoints","Middleware composition order matters — incorrect ordering can bypass auth checks","No built-in rate limiting or brute-force protection — requires additional middleware","Credential caching strategy is application-dependent; no universal caching layer","Async auth validation adds latency to every MCP request","Provider-specific claims (roles, groups, permissions) may not map cleanly across providers","Token formats vary (JWT vs opaque) — requires provider-specific validation logic","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.5486392162897402,"quality":0.26,"ecosystem":0.5800000000000001,"match_graph":0.25,"freshness":0.52,"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":"2026-05-24T12:16:23.902Z","last_scraped_at":"2026-05-03T14:04:47.472Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":27680,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=mcp-auth","compare_url":"https://unfragile.ai/compare?artifact=mcp-auth"}},"signature":"qkOBhuHBdDFIm8QWWESc4CGPMWWhvWwj9q7iIPiuN+XGRUVCtTcIVZNWvlg0I3q1QeCGN+UAZhPyEKbQmiPzCg==","signedAt":"2026-06-21T04:59:30.853Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/mcp-auth","artifact":"https://unfragile.ai/mcp-auth","verify":"https://unfragile.ai/api/v1/verify?slug=mcp-auth","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"}}