HTTP 429
mcp_transport_rate_limit_exceededMCP transport rate limit exceeded
Too many MCP protocol requests came from this address.
Resolution
Reduce protocol polling and wait for the transport window to reset.
Response handling
Keep the response's request_id for diagnostics. Retry only transient 429 and 503 responses, using the rate-limit headers and exponential backoff with jitter. Correct 400, 401, and 403 requests before retrying.