Portable intent card · 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.
Intent to transaction
The source header follows this discovery route through challenge, payment and delivery without exposing the buyer or request body.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/json-contract-check -m POST -H 'x-delx-source: intent-card-json-contract-check-api' --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"
}
}
}
}{
"intent": "JSON Contract Check for an agent workflow",
"tool_name": "util_json_contract_check",
"price_usdc": "0.002",
"machine_url": "https://commerce.delx.ai/intents/json-contract-check-api.json"
}Portable and inspectable