Transaction status

Check the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Send GET /api/tx-status with the required field hash and pay $0.001 per call over x402 or MPP (there is no free tier). It returns a JSON object with hash, network, status, blockNumber, from and 2 more.

Read-only. ?hash=0x…&network=base

Category: Payments & x402 · Tags: transaction status receipt confirmation multichain robinhood usdg · Also found as: tx

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Parameters

Example request

curl -i "https://agent402.tools/api/tx-status?hash=0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb&network=base"

Without payment this returns HTTP 402 Payment Required with the exact price for tx-status; any x402 v2 or MPP client pays it and retries.

Example response

{
  "hash": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
  "network": "base",
  "status": "success",
  "blockNumber": 50829610,
  "from": "0x…",
  "to": "0x…",
  "gasUsed": 91958
}

From an MCP client

catalog.call {
  "slug": "tx-status",
  "params": {
    "hash": "0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb",
    "network": "base"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for tx-status; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• hash is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• Cached: an identical request within 1m is answered from cache with X-Cache: hit.
• A POST with a JSON body to /api/tx-status is served as this GET, with the body as the input.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

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();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/tx-status?hash=0x2f1fecade9bd945e7817c11e5a34cafe6b349dd8c92a7587efed1de476bddfeb&network=base");

Part of these workflows

Transaction status is one step in this skill pack, each sold as a single call:

• Transaction forensics - 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.

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