Cursor cant connect to MCP server

[MikePendo]

Describe the bug

Cursor cant connect to mcp serever

Steps to reproduce the behavior

add mcp to cursor

Expected vs actual behavior

GitHub mcp should work

Logs

Paste any available logs. Redact if needed.
2025-12-20 23:12:53.645 [info] Handling DeleteClient action
2025-12-20 23:12:55.360 [info] Handling CreateClient action
2025-12-20 23:12:55.360 [info] Creating streamableHttp transport
2025-12-20 23:12:55.360 [info] Connecting to streamableHttp server
2025-12-20 23:12:55.366 [info] No stored tokens found
2025-12-20 23:12:55.384 [info] Handling ListOfferings action, server stored: false
2025-12-20 23:12:55.384 [error] No server info found
2025-12-20 23:12:55.856 [info] No stored client information found
2025-12-20 23:12:55.858 [info] Using redirect URL {"url":"cursor://anysphere.cursor-mcp/oauth/callback"}
2025-12-20 23:12:55.859 [error] Client error for command Incompatible auth server: does not support dynamic client registration
2025-12-20 23:12:55.859 [info] Client closed for command
2025-12-20 23:12:55.859 [error] Error connecting to streamableHttp server, falling back to SSE: Incompatible auth server: does not support dynamic client registration
2025-12-20 23:12:55.859 [error] Error connecting to streamableHttp server, falling back to SSE: Incompatible auth server: does not support dynamic client registration
2025-12-20 23:12:55.859 [info] Connecting to SSE server
2025-12-20 23:12:55.869 [info] No stored tokens found
2025-12-20 23:12:55.880 [info] Handling ListOfferings action, server stored: false
2025-12-20 23:12:55.880 [error] No server info found
2025-12-20 23:12:56.196 [info] No stored client information found
2025-12-20 23:12:56.196 [info] Using redirect URL {"url":"cursor://anysphere.cursor-mcp/oauth/callback"}
2025-12-20 23:12:56.196 [error] Client error for command Incompatible auth server: does not support dynamic client registration
2025-12-20 23:12:56.197 [error] Error connecting to SSE server after fallback: Incompatible auth server: does not support dynamic client registration
2025-12-20 23:12:56.197 [info] Client closed for command
2025-12-20 23:12:56.209 [info] Handling ListOfferings action, server stored: false
2025-12-20 23:12:56.209 [error] No server info found
2025-12-20 23:20:02.531 [info] Handling GetInstructions action
2025-12-20 23:20:02.531 [error] No server info found