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Tx Explainer

by Otto AI in Onchain & crypto

x402 APIPassing, checked 4 h ago

Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.

POST https://x402.ottoai.services/tx-explainer

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
68 ms typical, 68 ms slowest 5%
Last check
4 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://x402.ottoai.services/tx-explainer" \
  -H "content-type: application/json" \
  -d '{"chain":"base","outputLevel":"summary","txHash":"0x91985d4134da826cd05ee7e629b68f0d3ebbbe14198c7d98a4f9e50c1ff46041"}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.ottoai.services%2Ftx-explainer
const res = await pay("https://x402.ottoai.services/tx-explainer", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"chain":"base","outputLevel":"summary","txHash":"0x91985d4134da826cd05ee7e629b68f0d3ebbbe14198c7d98a4f9e50c1ff46041"}),
});
console.log(await res.json());

Example input

{
  "chain": "base",
  "outputLevel": "summary",
  "txHash": "0x91985d4134da826cd05ee7e629b68f0d3ebbbe14198c7d98a4f9e50c1ff46041"
}

Example output

{
  "chain": "Base",
  "details": {
    "gasCostNative": "0.00000152 ETH",
    "gasCostUsd": null,
    "gasUsed": "152340",
    "value": "0.5000 ETH"
  },
  "explorerUrl": "https://basescan.org/tx/0x...",
  "status": "success",
  "summary": "Swapped 0.5 ETH for 1,247.83 USDC via Uniswap V3",
  "txHash": "0x..."
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
4 h agoPassed40268 ms$0.01