Additive: gitea-mcp now validates JWTs from a LIST of issuers — the existing
Authentik issuer (DEX_ISSUER_URL) AND, when K8S_ISSUER_URL is set, the in-cluster
k8s OIDC issuer for audience-bound ServiceAccount tokens. Lets in-cluster pods
authenticate with kubelet-rotated projected SA tokens instead of a static bearer.
- config: K8S_ISSUER_URL + K8S_MCP_AUDIENCE.
- cmd/gitea-mcp/k8soidc.go: HTTP client that fetches the k8s OIDC discovery/JWKS
with the cluster CA + this pod's SA bearer (k3s requires an authed fetch;
anonymous is 401).
- main.go: build the issuer list; switch NewJWTValidator -> NewMultiJWTValidator.
The k8s issuer is best-effort — if its client can't be built (not in a pod) or
its discovery is unreachable at startup, it is DROPPED and we fall back so
Authentik/static auth is never taken down. Smoke-tested: off-pod it logs the
skip and starts static-only; static-bearer /mcp returns 400 (auth passed), not 401.
- bump mcp-chassis v0.3.0 -> v0.5.0 (multi-issuer + per-issuer HTTPClient).
Refs infra ADR-0011; enables retiring the in-cluster static bearer.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Bumps mcp-chassis to v0.3.0, which adds structured audit logging on every auth
rejection and returns 503 temporarily_unavailable (not a silent 401) when Dex is
unreachable at validation time. Wires slog.SetDefault so those audit lines flow
through gitea-mcp's JSON handler.
Together with the earlier /healthz jwt-status reporting and startup degradation
warning, this closes#6 (Dex-down is now observable and distinct from a bad
token) and #9 (auth failures are audit-logged: reason, IP, token type, hashed
fingerprint — never the raw token).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Gitea host renamed (infra ADR-0004); the mcp-chassis dep already migrated
(3329ff3), so the sequencing gate is clear. `go mod edit -module` + bulk import
rewrite across all .go files. gitea-mcp is a server binary (not an imported
library), so no downstream consumers break. build + task check green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The image build's `go mod download` failed on the stale
gitea.d-ma.be/mathias/mcp-chassis import (the gitea→git rename; the server no
longer serves a matching go-import meta tag). This is the latent #74 breakage
flagged for gitea-mcp, triggered by the first clean rebuild since the rename
(the #42 push). Point at git.d-ma.be/mathias/mcp-chassis v0.2.0 + go mod tidy.
Unblocks deploying the #42 create_project_from_template fix. gitea-mcp's own
module path stays gitea.d-ma.be (main module, not fetched — separate cleanup).
Refs #74, #42.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
First real port of the MCP chassis library — abort-criterion check for
spike S3 of the 2026-05 homelab architecture review.
Changes:
- Drop internal/auth/jwt.go (~79 LOC) — chassis provides JWTValidator
with identical signature.
- Drop internal/auth/bearer.go (~42 LOC) — chassis BearerMiddleware
has the same static-or-JWT semantics plus an optional WWW-Authenticate
resource_metadata challenge (consumed via new resourceMetadataURL arg).
- Drop internal/auth/bearer_test.go — same scenarios are covered in
the chassis bearer_test.go now.
- main.go: import chassis as `chassisauth`, build resourceMetadataURL
only when both DexIssuerURL + MCPResourceURL are set, replace the
inline /.well-known/oauth-protected-resource handler with the chassis
ProtectedResourceHandler.
internal/auth/caller.go (oauth2-proxy header → context) stays — chassis
out-of-scope.
Net LOC change: -~150 LOC duplicated infra + a 5-LOC import.
go.mod gains gitea.d-ma.be/mathias/mcp-chassis v0.1.0 (jwx/v2 + testify
already transitive, no new top-level deps).
Verifies abort criterion: one PR, one binary's worth of port, task check
green (lint + test + vet + govulncheck clean). Per the S3 spike spec,
this clears the chassis to continue. Next port: hyperguild/ingestion
(brain-mcp), filed as a follow-up.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- internal/auth/jwt.go: JWTValidator via lestrrat-go/jwx/v2, JWKS auto-refresh
- internal/auth/bearer.go: replace Gitea PAT validation with JWT->static->default chain
- internal/gitea/client.go: always use service PAT; remove TokenFromContext lookup
- internal/config/config.go: add DexIssuerURL, MCPAudience, MCPResourceURL, StaticToken
- cmd/gitea-mcp/main.go: wire validator, fix /.well-known to return real AS list
- bearer_test.go: rewrite for new API
Shared LRU avoids repeated Gitea calls for default-branch resolution;
the simple stdlib map alternative would race on concurrent access without
a mutex per entry, which is more code than the LRU.
Add internal/config package with Config struct and Load() function.
Reads GITEA_BASE_URL, GITEA_API_TOKEN, GITEA_MCP_ALLOWED_OWNERS,
GITEA_MCP_ORIGIN_ALLOWLIST, GITEA_MCP_PORT with sensible defaults.
Wire cfg.Port into main.go. TDD: tests written first, then impl.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Go module gitea.d-ma.be/mathias/gitea-mcp, minimal HTTP server with a
/healthz probe, Taskfile build targets, and .gitignore/README updates.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
mathiasandClaude Opus 4.8