InputPOST /api/v1/x402/hmac-sha256-hex
{
"text": "payload",
"secret": "key"
}Agent reliability and security · agent-reliability-security
Delx HMAC SHA256 Hex
HMAC-SHA256 hex of text with a secret. Call when you sign agent webhook test payloads offline. Returns hex digest for $0.001 USDC via x402 on Base. Local HMAC only—caller supplies secret; not stored. No network, no retention. Results are advisory; the caller owns budgets, auth, and production controls.
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/hmac-sha256-hex -m POST -H 'x-delx-source: product-page' --max-amount 0.001 -b '{"text":"payload","secret":"key"}'Delivered resultapplication/json
{
"schema": "delx/util-hmac-sha256-hex/v1",
"hex": "5d98b45c90a207fa998ce639fea6f02ecc8cc3f36fef81d694fb856b4d0a28ca",
"algorithm": "hmac-sha256"
}Machine-readable evidence