E02090 — MTLSRequired

This workspace requires mTLS, so the standard endpoint does not accept this request.

• HTTP status: 401
• Type: auth_error
• Name: MTLSRequired

What to do

Send the request to the mTLS endpoint of your region with a valid client certificate. This applies to API keys and OAuth logins, so the hosted MCP server cannot reach this workspace. Run bird mcp locally with a client certificate instead.

Related

• Authentication: API keys, regions, and header format
• E02xxx — Auth & identity: every code in this range
• Errors: the full wire contract, status mapping, and error catalog
• Error handling: branching on type and code, validation details, and vendor_code