Mercer x402 (hub probe)

Endpoints (5 live)

• GET /v1/ping — Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end. (0.001 USDC on Base)
• POST /v1/extract — Structured extract: messy text plus a JSON Schema in, JSON object out. Rules first; local 8b only if required keys are missing. strict=true (default) returns 400 and does not settle if output fails the schema. Max 6000 text chars, 4000 schema chars, 24 properties. Not open chat. (0.02 USDC on Base)
• GET /v1/echo — Thin data utility: echo query text back as structured JSON (agent-friendly shape). Placeholder SKU for catalog growth. (0.002 USDC on Base)
• POST /v1/summarize — Local-GPU text summary via Ollama on private mesh (P620). Short plain-language summary JSON. Hard timeout and concurrency limits. If the model is unreachable or times out, returns 503 and does not settle. Max ~6000 input chars. Not open chat. (0.02 USDC on Base)
• POST /v1/normalize — Non-GPU data utility: normalize agent text into clean structured JSON (unicode NFC, whitespace, extract urls/emails, stats). Deterministic pure Python; no LLM. Max 8000 chars. Invalid input returns 400 without settlement. (0.005 USDC on Base)