InputPOST /api/v1/x402/idempotency-key
{
"payload": {
"job_id": "42",
"action": "resume"
}
}Agent reliability and security · agent-reliability-security
Delx Idempotency Key
Derive a deterministic namespaced idempotency key from canonical JSON. 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
Run it from an agent.
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/idempotency-key -m POST -H 'x-delx-source: product-page' --max-amount 0.002 -b '{"payload":{"job_id":"42","action":"resume"}}'Delivered resultapplication/json
{
"schema": "delx/idempotency-key/v1",
"key": "delx_ca094a4752e182cfcac50a38d65de7c7e4f271ee05c08f26853c75f0ba24b049",
"algorithm": "sha256",
"namespace": "default",
"payload_sha256": "f85c6736261be7d990522f91e81634f844ad23c515f3b4029e197ab01a2d18dc"
}Machine-readable evidence