The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the MCP OAuth Connect listing page.
Free checker for when an MCP remote answers curl but dies in Claude / Cursor / Desktop / Grok Connectors.
Part of GFB's lab surface. Founder / peer identity (companies run with agents): gregfredabytes.com · essay · what I run
The free checker reads metadata. It does not finish a handshake (no DCR, no token, no tools/list). That gap is real — treat a fail as a scoping signal, not a dead end.
Optional paid attach lab (four-client attempt + written path) lives on the studio product page, not here: https://gfbytes.com/products/mcp-oauth-connect/
On that page you can also paste a public HTTPS MCP URL and hit Check (POST /products/diagnose).
Claude Code:
Grok Build:
Then:
Looks for a proper login challenge (not a bare 200 from curl), a registration endpoint, and S256. Paste only the URL in the Connectors UI — no API key.
template/Public ping-only example behind https://mcp.gfbytes.com (MIT). Reference server, not a service SKU.
MIT for the plugin, skill, diagnose script, tests, and template/. Studio attach-lab / fix-round services are separate offers on gfbytes.com.