feat: add auth-test-server for OAuth conformance testing #1384
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@modelcontextprotocol/client
@modelcontextprotocol/server
@modelcontextprotocol/express
@modelcontextprotocol/hono
@modelcontextprotocol/node
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| // Configure CORS to expose Mcp-Session-Id header for browser-based clients | ||
| app.use( | ||
| cors({ | ||
| origin: '*', |
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This was referenced Jan 14, 2026
- MCP server with Bearer token authentication - Uses SDK's requireBearerAuth middleware - Validates tokens via AS introspection endpoint (RFC 7662) - Serves Protected Resource Metadata at /.well-known/oauth-protected-resource - Designed for server auth conformance tests
- Add admin-action tool requiring 'admin' scope - Add scope-checking middleware for privileged tools - Returns 403 insufficient_scope for missing admin scope - Add scopes_supported to PRM response
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Summary
Adds an auth-test-server to the conformance test suite for testing server-side OAuth implementation.
What's New
src/conformance/auth-test-server.ts- MCP server with OAuth authenticationsrc/conformance/README.mdwith documentationFeatures
requireBearerAuthmiddleware for authentication/.well-known/oauth-protected-resourceMCP_CONFORMANCE_AUTH_SERVER_URLenvironment variableUsage
# Start with a fake auth server MCP_CONFORMANCE_AUTH_SERVER_URL=http://localhost:3000 \ npx tsx src/conformance/auth-test-server.tsRelated
This server is used by the conformance repo's server auth tests (modelcontextprotocol/conformance#105).