# Base Mainnet Transaction Inspector

> Base Mainnet Transaction Inspector is a paid API for AI agents from apiacre.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Inspects a Base mainnet transaction and its receipt together, returning execution outcome, confirmations, actual fee paid, decoded calldata, and recognized ERC-20 transfer events including official Base USDC identification.

## Facts

- Endpoint: POST https://apiacre.com/v1/crypto/base-transaction-inspect
- 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/base-mainnet-transaction-inspector-f5b7aba9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iWUW1C9OQx36btKxJ3UrY

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-mainnet-transaction-inspector-f5b7aba9 -d '<json body>'
```

Example prompt: Can you inspect Base mainnet transaction 0xabc123... and tell me if it succeeded, how many confirmations it has, what the actual fee was, and whether any USDC was transferred?

## When to prefer this

Choose this endpoint when you need a unified, enriched view of a single Base mainnet transaction that goes beyond raw RPC data — specifically when you want confirmed fee data, decoded calldata, ERC-20 transfer event extraction, and official USDC recognition in one call rather than assembling multiple RPC calls yourself.

## Known failure modes

- Transaction hash not found on Base mainnet — returns 404 or empty result
- Malformed or invalid transaction hash format — returns validation error
- Transaction is pending and not yet mined — receipt unavailable
- Calldata cannot be decoded if ABI is not recognized — returns raw bytes
- Rate limiting or upstream Base RPC node unavailability — returns 503

## How this service works

Inspect Base transaction status and receipt evidence in one call, including success, revert, or pending state, confirmations, actual gas fee, recognized calldata, bounded ERC-20-shaped transfers, and official Base USDC recognition for payment confirmation.

## Output

Returns a combined view of the transaction and its receipt: execution status (success/failure), block number, confirmation count, actual gas fee in ETH, decoded calldata with recognized function signatures, and a bounded list of ERC-20-shaped transfer events with official Base USDC identification where applicable.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "transaction_hash": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "block": {
    "hash": "0x3333333333333333333333333333333333333333333333333333333333333333",
    "number": 34567890,
    "timestamp": "2026-08-10T16:00:00+00:00",
    "confirmations": 5,
    "transactionIndex": 7
   },
   "found": true,
   "mined": true,
   "source": "https://docs.base.org/base-chain/quickstart/connecting-to-base",
   "network": "eip155:8453",
   "outcome": "success",
   "receipt": {
    "status": 1,
    "gasUsed": 51234,
    "outcome": "success",
    "cumulativeGasUsed": 2100000,
    "effectiveGasPriceWei": "10000000"
   },
   "disclaimer": "Public Base mainnet execution data only; no identity, ownership, intent, coun...",
   "explorerUrl": "https://basescan.org/tx/0x222222222222222222222222222222222222222222222222222...",
   "transaction": {
    "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "from": "0x1111111111111111111111111111111111111111",
    "nonce": 42,
    "value": {
     "eth": "0",
     "wei": "0"
    },
    "gasLimit": 65000
   },
   "observedAtBlock": 34567894,
   "transactionHash": "0x2222222222222222222222222222222222222222222222222222222222222222"
  },
  "meta": {
   "cached": false,
   "sources": [],
   "warnings": [],
   "duration_ms": 42,
   "next_actions": []
  },
  "service": "crypto.base-transaction-inspect",
  "version": "1",
  "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-mainnet-transaction-inspector-f5b7aba9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apiacre.com](https://www.zero.xyz/host/apiacre.com/llms.txt)