Marketplace · API · x402

api.agent-payload-tools.workers.dev/hmac

Create or verify an HMAC for a message or payload using SHA-256, SHA-384, or SHA-512. Useful for webhook signatures, shared-secret authentication, payload signing, and message integrity checks.

Endpointhttps://api.agent-payload-tools.workers.dev/hmac
TrustNot checked yet
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x6B2683F66d35b91ED05a1646c0305b02260B6acB
methodPOST
last updated2026-11-01T07:09:20.943Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.agent-payload-tools.workers.dev/hmac
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-44079292cd90c58a

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}