## Summary `fetchToken` in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the `blacklist.isBlacklisted` check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. Alice, a builder, points an OAuth2 config at `http://169.254.169.254/...` or `http://127.0.0.1:5984/`; the server connects and returns response-body fragments in the validation result. ## Details `packages/server/src/sdk