Skill: Transaction forensics

Bundled execution of the Transaction forensics workflow — Explain what an EVM transaction actually did: confirmation status, the raw transaction from the chain, decoded calldata with typed parameters, the resolved function signature, and labeled counterparties. One x402 payment runs 5 underlying tools (tx-status, evm-rpc, calldata-decode, selector-lookup, address-label); partial-success per step.

Input

Example output

{
  "pack": "tx-forensics",
  "args": {
    "hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "network": "base"
  },
  "steps": [
    {
      "slug": "tx-status",
      "ok": true,
      "result": {}
    },
    {
      "slug": "evm-rpc",
      "ok": true,
      "result": {}
    },
    {
      "slug": "calldata-decode",
      "ok": true,
      "result": {}
    },
    {
      "slug": "selector-lookup",
      "ok": true,
      "result": {}
    },
    {
      "slug": "address-label",
      "ok": true,
      "result": {}
    }
  ],
  "summary": "5/5 steps succeeded"
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/skill/tx-forensics \
  -H "Content-Type: application/json" \
  -d '{"hash":"0x0000000000000000000000000000000000000000000000000000000000000000","network":"base"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/skill/tx-forensics", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "network": "base"
  }),
});

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