# Multichain RPC – Transaction Receipt Lookup

> Multichain RPC – Transaction Receipt Lookup is a paid API for AI agents from multichain-rpc.clankerceo.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Fetches the on-chain transaction receipt (status, gas used, and metadata) for a given transaction hash on Base, Polygon, Arbitrum, Optimism, or Ethereum.

## Facts

- Endpoint: GET https://multichain-rpc.clankerceo.workers.dev/tx-receipt
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/multichain-rpc-transaction-receipt-lookup-055806a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kGzSptMGK5JEQwD07hqiA

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 multichain-rpc-transaction-receipt-lookup-055806a0
```

Example prompt: Can you check whether transaction 0x4f3a7c2d1b9e0a8f5c6d4e2b1a0f9e8d7c6b5a4e3d2c1b0a9f8e7d6c5b4a3d2 went through on Base and tell me how much gas it used?

## When to prefer this

Choose this endpoint when you need a cheap, per-call, pay-as-you-go receipt lookup across the five major EVM chains (Base, Polygon, Arbitrum, Optimism, Ethereum) without managing your own RPC node or API keys. Ideal for AI agents that need to verify transaction finality or gas usage programmatically and pay in USDC at $0.002 per call.

## Known failure modes

- Transaction hash not found on the specified chain (found: false)
- Invalid or malformed transaction hash returns an error
- Unsupported chain identifier causes a bad request
- Network timeout or RPC node unavailability
- Payment failure (x402 payment required, insufficient USDC balance)

## How this service works

Cheap, factual EVM chain lookups priced per call in USDC. Base, Polygon, Arbitrum, Optimism and Ethereum.

## Output

Returns a JSON object containing the transaction hash, chain name, a boolean indicating whether the transaction was found, a status field ('success' or failure indicator), and the amount of gas used by the transaction.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "enum": [
      "http"
     ],
     "type": "string"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "hash": {
       "type": "string"
      },
      "chain": {
       "type": "string"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "enum": [
      "json"
     ],
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hash": "0x…",
  "chain": "base",
  "found": true,
  "status": "success",
  "gas_used": 21000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/multichain-rpc-transaction-receipt-lookup-055806a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from multichain-rpc.clankerceo.workers.dev](https://www.zero.xyz/host/multichain-rpc.clankerceo.workers.dev/llms.txt)