Closes the two code-side gaps found while auditing the Claude Connectors
Directory submission checklist after #682/#683:
1. Origin-header validation on the /mcp endpoint (POST/GET/DELETE) — an
explicit directory submission requirement and an MCP spec MUST for the
Streamable HTTP transport (DNS-rebinding defense). Requests without an
Origin header (claude.ai backend, Claude Desktop, npx gnubok-mcp,
Claude Code, MCP Inspector's proxy — every known client) pass through
unchanged. A present Origin is allowed only when its host matches the
request Host (covers Vercel previews + self-hosted without hardcoding)
or NEXT_PUBLIC_APP_URL (proxy-rewritten Host); anything else is 403
with a JSON-RPC error envelope. The endpoint sets no CORS headers, so
no currently-working browser flow is affected.
2. serverInfo.title: 'Accounted' (MCP 2025-06-18 display name). name
stays 'gnubok' — stable identifier clients may key state on.
3. export-docs-to-website.mts now also exports CONNECT_CLAUDE_MD to the
gnubok-website repo, so docs.gnubok.se/connect-claude (the target of
the canonical /docs/api redirect) stays in sync. Companion website PR:
jakobwennberg/gnubok-website#1.
Tests: new origin-guard.test.ts (10 tests — no-Origin pass-through,
same-origin, preview host, proxy host via env, foreign/port-mismatch/
null/malformed rejection, 403 envelope, and per-method enforcement on
the registered apiRoutes). Full MCP suite 295/295 green.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jakob Wennberg
03a2130919