Agent reliability and security · agent-reliability-security
Check a JSON payload against a bounded structural contract and return path-level errors. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream provider; structured validation failures are not billed.
One-command purchase
No account or API key. AgentCash reads the 402 challenge, pays no more than the declared cap, retries the request and returns the result.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/json-contract-check -m POST -H 'x-delx-source: product-page' --max-amount 0.002 -b '{"instance":{"status":"ready"},"contract":{"type":"object","required":["status"],"properties":{"status":{"type":"string"}}}}'{
"instance": {
"status": "ready"
},
"contract": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"type": "string"
}
}
}
}{
"schema": "delx/json-contract-check/v1",
"valid": true,
"errors": [],
"error_count": 0,
"scope": "bounded structural subset: type, required, properties, enum"
}Machine-readable evidence