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MCP OAuth Connect

Official registry Archived AI and agents

Ping-only MCP origin for claude.ai, Desktop, Cursor, and Grok Connectors.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http mcp-oauth-connect 'https://mcp.gfbytes.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mcp-oauth-connect": {
            "type": "http",
            "url": "https://mcp.gfbytes.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. MCP OAuth Connect
  2. What this is not
  3. Clone / run
  4. For AI assistants / contributors
  5. Plugin install (optional)
  6. template/
  7. License

MCP OAuth Connect

Free checker for when an MCP remote answers curl but dies in Claude / Cursor / Desktop / Grok Connectors.
Live checkercheck.gfbytes.com
This repoCLI diagnose.py + plugin / skill
Web UImcp-gfbytes
Demo MCPhttps://mcp.gfbytes.com

Part of GFB's lab surface. Founder / peer identity: gregfredabytes.com · essay · what I run

What this is not

  • Not a hosted MCP product. https://mcp.gfbytes.com is a ping-only reference server.
  • Not a completed handshake. The checker reads discovery metadata. It does not do DCR, mint a token, or call tools/list. A fail is a scoping signal, not a dead end.
  • Not the paid attach lab. Four-client attempt + written path lives on the studio product page.

Paste only the URL in a Connectors UI — no API key.

Clone / run

Stdlib Python ≥3.10. No install for the checker:

git clone https://github.com/GFB2026/mcp-oauth-connect.git
cd mcp-oauth-connect
python skills/mcp-oauth-connect/scripts/diagnose.py https://mcp.gfbytes.com

Exit 0 if connector-critical checks pass; 1 otherwise. JSON report on stdout.

Looks for a proper login challenge (not a bare 200 from curl), a registration endpoint, PKCE S256, and RFC 9728 protected-resource metadata.

Tests:

python -m pip install "pytest>=8"
python -m pytest

For AI assistants / contributors

Edit lanes and hard stops: .github/copilot-instructions.md. Verify with python -m pytest (install pytest>=8; this tree is flat — no pip install -e).

Plugin install (optional)

Claude Code:

/plugin marketplace add GFB2026/mcp-oauth-connect
/plugin install mcp-oauth-connect@mcp-oauth-connect

Grok Build:

grok plugin marketplace add GFB2026/mcp-oauth-connect
grok plugin install mcp-oauth-connect --trust

Then run the same diagnose.py path as above.

template/

Public ping-only example behind https://mcp.gfbytes.com (MIT). Reference server, not a service SKU.

License

MIT for the plugin, skill, diagnose script, tests, and template/. Studio attach-lab / fix-round services are separate offers on gfbytes.com.

Frequently asked questions

What is MCP OAuth Connect?

Ping-only MCP origin for claude.ai, Desktop, Cursor, and Grok Connectors.

How do I install MCP OAuth Connect?

It runs as a remote server. In Claude Code: claude mcp add --transport http mcp-oauth-connect 'https://mcp.gfbytes.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does MCP OAuth Connect need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is MCP OAuth Connect open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains MCP OAuth Connect?

It is published by GFB2026. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.