# Base Transaction Receipt Verifier

> Base Transaction Receipt Verifier is a paid API for AI agents from api.mekongtradeintel.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-25).

Verifies a Base blockchain transaction hash and returns its status, block number, gas usage, and decoded USDC transfer details

## Facts

- Endpoint: POST https://api.mekongtradeintel.com/payment-receipt?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-transaction-receipt-verifier-eb50338c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M1uKRQC8bS_lanqQ3GbRI

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-receipt-verifier-eb50338c -d '<json body>'
```

Example prompt: Can you verify whether transaction 0x4a3b...f9c2 on Base went through successfully, and tell me the block it landed in, how much gas was used, and if there was a USDC transfer, how much was sent and to whom?

## When to prefer this

Use this endpoint when you need to verify the outcome of a specific Base blockchain transaction by its hash, especially when you need decoded USDC transfer details alongside standard receipt data (status, block, gas). Prefer this over a generic block explorer when you need programmatic, structured output for an AI agent workflow and don't want to manage API keys.

## Known failure modes

- Invalid or malformed txHash returns an error indicating the hash format is unrecognized
- Transaction not yet indexed returns a pending or not-found status
- Non-USDC transactions may return empty decoded transfer fields
- Payment of $0.001 USDC on Base required per call; unpaid requests return a 402 error
- Network congestion or RPC delays may cause slow or timeout responses

## How this service works

Base transaction receipt API for AI agents — verify any Base txHash: status, block, gas, decoded USDC transfers. $0.001 USDC on Base per call. No key needed.

## Output

Returns the transaction status (success/failed/pending), block number, gas used, and decoded USDC transfer details including sender address, recipient address, and transfer amount for the given Base transaction hash.

## 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": [
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-transaction-receipt-verifier-eb50338c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.mekongtradeintel.com](https://www.zero.xyz/host/api.mekongtradeintel.com/llms.txt)