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feat: add auth-test-server for OAuth conformance testing #1384

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feat: add auth-test-server for OAuth conformance testing #1384

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af815c6
feat: add auth-test-server for OAuth conformance testing
pcarleton Jan 14, 2026
23b61b6
feat: add step-up auth support to auth-test-server
pcarleton Jan 14, 2026
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18 changes: 18 additions & 0 deletions src/conformance/README.md
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Expand Up @@ -59,6 +59,24 @@ npx @modelcontextprotocol/conformance server \

- `everything-client.ts` - Client that handles all client conformance scenarios
- `everything-server.ts` - Server that implements all server conformance features
- `auth-test-server.ts` - Server with OAuth authentication for auth conformance tests
- `helpers/` - Shared utilities for conformance tests

Scripts are in `scripts/` at the repo root.

## Auth Test Server

The `auth-test-server.ts` is designed for testing server-side OAuth implementation.
It requires an authorization server URL and validates tokens via introspection.

```bash
# Start with a fake auth server
MCP_CONFORMANCE_AUTH_SERVER_URL=http://localhost:3000 \
npx tsx src/conformance/auth-test-server.ts
```

The server:
- Requires Bearer token authentication on all MCP endpoints
- Uses the SDK's `requireBearerAuth` middleware
- Validates tokens via the AS's introspection endpoint (RFC 7662)
- Serves Protected Resource Metadata at `/.well-known/oauth-protected-resource`
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