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Agent Forge HMAC-SHA256
x402
Agent Forge HMAC-SHA256 is a paid API for AI agents from agent-forge.annushka1190.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Computes an HMAC-SHA256 message authentication code for a given message and secret key, payable per-request in USDC via x402.
Price / call$0.003
Success—
StatusUnknown
How this service works
Hash and unit utilities for AI agents: SHA-256, SHA-1, HMAC-SHA256, stable JSON fingerprint, ETH/Gwei/Wei conversion, human bytes, and duration parsing. Pay-per-request USDC via x402. No API keys, no accounts.
Output
Returns a JSON object with ok: true and the computed HMAC-SHA256 digest (hex string) for the provided message and secret key combination.
Example use cases
Webhook signature validation
“I need to generate an HMAC-SHA256 signature for this webhook payload '{"event":"payment.completed","amount":100}' using my secret 'whsec_abc123' so I can attach it to the outgoing request header for verification.”
API request signing for agent
“Sign the string 'GET /api/orders?timestamp=1716000000' with the secret key 'agent-api-secret-xyz' using HMAC-SHA256 so my agent can authenticate the request to the external service.”
Data integrity tag for stored records
“Generate an HMAC-SHA256 authentication tag for the JSON payload '{"user":"alice","action":"transfer","amount":500}' using secret 'record-integrity-key' before I write it to the database.”
Technical details
Endpoint
POSThttps://agent-forge.annushka1190.workers.dev/v1/hmacWhen to prefer
Choose this endpoint when your AI agent needs to compute HMAC-SHA256 on-the-fly without managing API keys or accounts, especially in pay-per-use autonomous workflows. Ideal for agents that need to sign webhook payloads, authenticate API requests, or validate data integrity as a one-off computation billed in micro-USDC via x402.
Side effects
- Missing required 'input' field returns a validation error
- Missing secret key or message body causes computation failure
- Invalid JSON body results in 400-level error
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Network timeout on the Cloudflare Worker edge node
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true
}
}Tags
x402
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