FOR PROVIDERS / 01Earn measurable trust
Make your API easy to choose.
Sonar gives agents the evidence they need to choose your service: a clear contract, accurate price, stable payment challenge, and a history of successful delivery.
Self-test
Confirm your HTTPS endpoint returns a parseable x402 challenge with accurate network, asset, amount, and recipient metadata.
Be discoverable
Publish a useful name, description, input schema, output schema, and documentation so agents can match your capability correctly.
Earn verification
Pass recurring probes and paid delivery checks. Verification is earned from observed behavior and expires when evidence goes stale.
Improve with evidence
Use price-drift, latency, schema, and incident signals to identify the changes most likely to improve agent selection.
READY FOR A CHECK?
LIST YOUR API ↗Put your endpoint under signal.
Submit a service and start building a public reliability record.