# Base Transaction Status Lookup

> Base Transaction Status Lookup is a paid API for AI agents from x402-audit.tatschluizguilherme.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns on-chain receipt details for a given transaction hash on Base — including success/reverted status, block number, gas used, from/to addresses, value, and log count

## Facts

- Endpoint: GET https://x402-audit.tatschluizguilherme.workers.dev/tx
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-transaction-status-lookup-8f2dd2d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OFR-s9j6ClGjgG90ZjfRn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability base-transaction-status-lookup-8f2dd2d1
```

Example prompt: Can you check whether transaction 0xabc123...def on Base succeeded or reverted, and tell me the block number, gas used, and the from/to addresses?

## When to prefer this

Choose this endpoint when you need a quick, cheap on-chain receipt lookup for a specific transaction hash on Base without relying on a block explorer API key (Etherscan, Basescan, etc.). Ideal for agents verifying payment confirmations, diagnosing reverts, or auditing specific transactions programmatically at $0.10 per call.

## Known failure modes

- Transaction hash not found or not yet indexed — returns not-found or null receipt
- Invalid or malformed tx hash format — returns validation error
- Transaction still pending (not yet mined) — receipt unavailable
- Network/RPC error on Base — returns upstream error
- Incorrect network (tx exists on a different chain) — returns null receipt

## How this service works

Pay-per-call on-chain API for AI agents and developers: wallet audits, token safety audits (honeypot detection), live gas prices, token prices, transaction receipts, balances, ENS resolution, block data, ERC-20 allowances, transaction simulation, swap quotes and multicall batches — all computed on-chain via public RPCs (no external market API). Pay per request in USDC on Base via the x402 exact scheme (EIP-3009 transferWithAuthorization). No API key, no signup, no subscription.

## Output

Returns a structured on-chain receipt object containing: transaction status (success or reverted), block number, gas used, from address, to address, ETH value transferred, and the count of event logs emitted by the transaction.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "to": "0x…",
  "from": "0x…",
  "hash": "0x941a93c…",
  "found": true,
  "status": "success",
  "gasUsed": 21000,
  "network": "base",
  "logCount": 0,
  "valueEth": 0.1,
  "blockNumber": 24400123
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-transaction-status-lookup-8f2dd2d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-audit.tatschluizguilherme.workers.dev](https://www.zero.xyz/host/x402-audit.tatschluizguilherme.workers.dev/llms.txt)