SchemaCheck Agent
Validate JSON against a JSON Schema. Checks LLM and agent output and API request payloads, returning structured errors with error codes, JSONPath locations, and a plain-English summary. Optional automatic repair of invalid payloads.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 200 ms
- Price
- $0.002 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 1
- Category
- AI model answers
- Address
- https://projectx402-production.up.railway.app/v1/schema-check
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/63e688de0595.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).