cd ~

The pion MCP server covers pion, the Go implementation of WebRTC. Each version is a pion/webrtc release tag, indexed together with its go.mod-pinned sibling modules (ice, dtls, sctp, rtp…). It shares this site's OAuth credentials — connect your MCP client at https://webrtc.page/pion.

HTTP transport with OAuth 2.1 (PKCE). Dynamic client registration is not supported — register a client first, then pass its client_id (and secret) in your MCP client config. Localhost redirect URIs are allowed for any port.

The same OAuth applies to both servers — one registered client works for the libwebrtc server (/mcp) and this pion server (/pion); just point the URL at /pion.

1. Register a client and grab client_id / client_secret at /profile →

2. Configure your client with those credentials (examples below).

Claude Code — CLI

MCP_CLIENT_SECRET=<your-client-secret> \
claude mcp add --transport http \
  --client-id <your-client-id> --client-secret --callback-port 8090 \
  pion https://webrtc.page/pion

--client-secret reads the secret from MCP_CLIENT_SECRET (or prompts if unset). Without --client-id Claude Code attempts dynamic registration and fails with «does not support dynamic client registration».

Claude Code (.mcp.json)

{
  "mcpServers": {
    "pion": {
      "type": "http",
      "url": "https://webrtc.page/pion",
      "oauth": { "clientId": "<your-client-id>", "callbackPort": 8090 }
    }
  }
}

The secret is kept in your OS keychain, never in .mcp.json. Run the CLI command once to store it, or set MCP_CLIENT_SECRET in the environment.

Claude Desktop (claude_desktop_config.json)  ·  Cursor (.cursor/mcp.json)  ·  Windsurf (~/.codeium/windsurf/mcp_config.json)  ·  VS Code · Zed

These clients connect over the same OAuth flow — supply the registered client_id via each client's own OAuth credentials setting (field names vary by editor). Clients that only support automatic registration cannot connect; use the stdio transport locally instead.