The gitea-mcp sidecar holds no credential of its own and expects each
client to supply a Gitea token per request, so it answers initialize and
tools/list to anyone: the deploy probe measured a 200 disclosing the full
tool inventory. No sidecar setting closes that, because serving the
unauthenticated is how the upstream is built.
Front it with the svc-ai-mcp-adapter instance instead. Clients now present
mcp_bearer to compose service giteamcp and get a 401 otherwise; the
adapter presents the minted Gitea token upstream to giteamcpupstream,
which keeps the sidecar image but drops it to the role's own network.
Pin the 24 read-only tools the sidecar serves, captured from the running
instance, so the served surface cannot widen unnoticed.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>