# AgentRescue HTTP API: POST https://agentrescue-mcp.onrender.com/v1/diagnose with a JSON error and optional system (http, api, or mcp). MCP endpoint: https://agentrescue-mcp.onrender.com/mcp (Streamable HTTP). Discover tools freely with tools/list. ## When to use Use AgentRescue after an HTTP, API, or MCP request fails, or when transport succeeds but the result is missing or incorrect. Send only a sanitized error from the latest failure. Developer quickstart: https://agentrescue-mcp.onrender.com/developers. Pricing: https://agentrescue-mcp.onrender.com/pricing. OpenAPI: https://agentrescue-mcp.onrender.com/openapi.json. Call diagnose_failure with a sanitized HTTP, API, or MCP error. Advice is read-only. The x402 paid trial is currently disabled; no diagnosis payments are collected. Requests are limited to 60 GET and 20 POST per minute per instance; request and response bodies are capped at 16 KB. Do not send secrets or personal data.