{"openapi":"3.0.0","info":{"title":"Performance Baseline Tracker","version":"1.0.0","description":"Captures and monitors AI agent output quality over time. Baseline snapshots, drift detection with semantic similarity, trend analysis. Pay-per-request via x402.","guidance":"4 MCP tools: capture_baseline (store reference snapshots), compare_performance (detect drift), get_trend (time-series data), list_baselines (view stored baselines). POST to /mcp with JSON-RPC body. Include X-Payment-Tx header."},"paths":{"/mcp":{"post":{"summary":"Performance Baseline Tracker MCP endpoint","description":"Requires x402 payment (0.10 USDC on Base).","x-payment-info":{"protocols":["x402"],"pricingMode":"fixed","price":"0.10"},"parameters":[{"name":"X-Payment-Tx","in":"header","required":true,"schema":{"type":"string"}}]}}}}