# Agent Chain Kit – EVM Transaction Receipt Lookup

> Agent Chain Kit – EVM Transaction Receipt Lookup is a paid API for AI agents from built-with-productos-voo8.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Retrieves a transaction receipt for a given EVM transaction hash on Ethereum, Base, Arbitrum, or Polygon.

## Facts

- Endpoint: GET https://built-with-productos-voo8.vercel.app/v1/tx-receipt
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-chain-kit-evm-transaction-receipt-lookup-399967a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DvaTAYrY4zU_WW-UOQXTV

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 agent-chain-kit-evm-transaction-receipt-lookup-399967a0
```

Example prompt: Can you pull the transaction receipt for 0x3a1b2c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b on Base and tell me whether it succeeded and how much gas was used?

## When to prefer this

Use this endpoint when an AI agent needs to confirm the outcome of an EVM transaction — particularly on Base, Ethereum, Arbitrum, or Polygon — and requires structured receipt data (gas, block, status, contract address) programmatically. Prefer this over block explorer scraping or raw RPC calls when you need a pay-per-call, agent-friendly API with multi-network support in a single interface.

## Known failure modes

- Invalid or malformed tx_hash (not matching 0x + 64 hex chars) returns a validation error
- Transaction not found on the specified network returns a not-found error
- Unsupported network value returns an enum validation error
- RPC backend temporarily unavailable may return a 5xx error
- Payment failure (insufficient USDC balance) returns 402 Payment Required

## How this service works

Pay-per-call EVM utility API for AI agents and automation.

## Output

A JSON object containing the transaction status (success/failure), network name, gas used, block number, contract address (if applicable), and the transaction hash. This gives the agent full confirmation of transaction finality and execution details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "tx_hash"
     ],
     "properties": {
      "network": {
       "enum": [
        "ethereum",
        "base",
        "arbitrum",
        "polygon"
       ],
       "type": "string"
      },
      "tx_hash": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{64}$"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": "success",
  "network": "base",
  "gas_used": 21000,
  "block_number": 34567890,
  "contract_address": null,
  "transaction_hash": "0x0000000000000000000000000000000000000000000000000000000000000000"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-chain-kit-evm-transaction-receipt-lookup-399967a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from built-with-productos-voo8.vercel.app](https://www.zero.xyz/host/built-with-productos-voo8.vercel.app/llms.txt)