# Straelo Relay Transaction Intelligence

> Straelo Relay Transaction Intelligence is a paid API for AI agents from relay.straelo.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Analyzes an EVM transaction hash on Ethereum or Base and returns decoded intelligence including execution status, gas metrics, method selector, value transferred, and log counts.

## Facts

- Endpoint: POST https://relay.straelo.com/transaction-intelligence?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/straelo-relay-transaction-intelligence-a0302251
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6EAWdz105hL0bvIJwHT27

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 straelo-relay-transaction-intelligence-a0302251 -d '<json body>'
```

Example prompt: Can you analyze this Base transaction for me — 0xa9b3c1d2e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1 — and tell me what method was called, how much gas was used, whether it succeeded, and what fees were paid?

## When to prefer this

Choose this endpoint when you need fast, structured intelligence about a specific EVM transaction on Ethereum or Base, particularly when you need decoded fields like method_selector, gas metrics, value transferred, and execution status in a single call. Prefer it over raw RPC eth_getTransactionReceipt calls when you want pre-parsed, agent-ready JSON with fee calculations already normalized to native units.

## Known failure modes

- Invalid tx_hash format (not a 64-char hex with 0x prefix) returns validation error
- Transaction hash not found on the specified chain returns not found error
- Unsupported chain value (anything other than 'ethereum' or 'base') returns schema validation error
- Network or RPC timeout may cause elevated latency or 5xx error
- Payment failure (insufficient USDC balance) blocks the request via x402 protocol

## How this service works

Retrieve a Base or Ethereum transaction and receipt in one paid request, with deterministic execution status, transaction classification, method selector, gas cost, logs count and raw RPC evidence.

## Output

A JSON object containing the decoded transaction analysis: execution_status (success/failure), gas_used, gas_limit, effective_gas_price, total_fee_wei, total_fee_native, value_wei, value_native, method_selector, logs_count, contract_created, transaction_type, plus the raw receipt and transaction objects, provider name, and latency_ms.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "ethereum",
    "base"
   ],
   "type": "string",
   "description": "EVM network containing the transaction."
  },
  "tx_hash": {
   "type": "string",
   "pattern": "^0x[a-fA-F0-9]{64}$",
   "description": "32-byte EVM transaction hash."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "base",
  "receipt": {},
  "tx_hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "analysis": {
   "gas_used": "21000",
   "gas_limit": "21000",
   "value_wei": "0",
   "logs_count": 0,
   "value_native": "0",
   "total_fee_wei": "21000000000",
   "method_selector": "0xa9059cbb",
   "contract_created": null,
   "execution_status": "success",
   "total_fee_native": "0.000000021",
   "transaction_type": "contract_call",
   "effective_gas_price": "1000000"
  },
  "provider": "aex402",
  "latency_ms": 20,
  "transaction": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/straelo-relay-transaction-intelligence-a0302251/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from relay.straelo.com](https://www.zero.xyz/host/relay.straelo.com/llms.txt)