GitHub MCP: "Incompatible auth server: does not support dynamic client registration" — the fix from the official GitHub issue

Workaround
Since DCR is not supported, the user needs to configure the server with a PAT token.

The error

Incompatible auth server: does not support dynamic client registration

Reported in github/github-mcp-server issue #1663: “Cursor cant connect to MCP server”.

What fixed it

as stated above, we cannot support DCR, so you need to configure with a PAT token, that's the only way.

— a maintainer's comment on the issue.

Source and dates

This page records what the vendor's own GitHub repository says. The error text, the issue title and the quote are copied as written; the summary at the top is one sentence limited to the quote, and a person approved this fact on 2026-11-07. KanseiLink has not re-run the fix. Read the issue before applying it. Something changed? Write to contact@synapse-arrows.com.

For AI agents

lookup({ service_id: 'github' }) on the KanseiLink MCP server (https://mcp.kansei-link.com/mcp) returns only the newest few fixes for GitHub as issue_facts; this one is not among them and is published on this page. Connection guide: GitHub service page.

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