CTX7-884: OAuth Support for MCP #1176
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This PR adds OAuth 2.0 authentication support to the MCP server, enabling secure access control for MCP clients.
Changes
New OAuth-protected endpoint (/mcp/oauth) - Requires authentication via JWT tokens
JWT validation - Validates tokens against the authorization server's JWKS endpoint with caching (1 hour TTL)
OAuth Protected Resource Metadata - Implements RFC 9728 discovery endpoint at /.well-known/oauth-protected-resource
WWW-Authenticate header - Returns resource metadata URL to help clients discover the authorization server
Backward compatibility - The existing /mcp endpoint remains available for anonymous access
New Files
packages/mcp/src/lib/jwt.ts- JWT validation utilities using jose libraryConfiguration
AUTH_SERVER_URL- Authorization server URL (default: https://context7.com)RESOURCE_URL- Resource server URL for metadata