# Sleuth AI Transaction Inspector

> Sleuth AI Transaction Inspector is a paid API for AI agents from x402.sleuthagent.ai, paid per call via x402, $0.099/call, status unknown (last checked 2026-09-14).

Analyzes and explains a specific on-chain transaction in plain language, returning a human-readable summary of what occurred

## Facts

- Endpoint: POST https://x402.sleuthagent.ai/api/v1/transaction-inspect
- Price: $0.099/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sleuth-ai-transaction-inspector-42e35a16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZEpKNSNZhlClseAaDfTaa

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 sleuth-ai-transaction-inspector-42e35a16 -d '<json body>'
```

Example prompt: Can you investigate this transaction for me — 0x4a3b8c2d1e9f7a6b5c4d3e2f1a0b9c8d7e6f5a4b — and tell me exactly what happened on-chain, like which tokens moved, which protocol was involved, and how much?

## When to prefer this

Choose this endpoint when you need a human-readable, AI-generated explanation of a specific on-chain transaction — particularly for DeFi interactions, swaps, or complex multi-step transactions — and you want pay-per-call pricing via USDC on Base with no subscription required. Prefer this over block explorers when you need natural language interpretation rather than raw decoded data.

## Known failure modes

- Invalid or malformed transaction hash returns an error
- Transaction not found on supported chain returns empty or error response
- Network congestion or RPC unavailability may cause timeouts
- Payment failure (insufficient USDC balance or x402 protocol error) blocks the call
- Unsupported chain or very old transactions may yield incomplete analysis

## How this service works

Pay-per-call on-chain investigation API (x402, USDC on Base).

## Output

A natural-language explanation of what the transaction did (e.g. 'This transaction swapped 5 ETH for 12,000 USDC via Uniswap v3'), along with a unique request_id for tracking the call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "auto",
    "base",
    "ethereum",
    "arbitrum",
    "polygon",
    "bsc",
    "robinhood",
    "solana",
    "bnb",
    "robinhoodchain"
   ],
   "type": "string",
   "default": "auto"
  },
  "tx_hash": {
   "type": "string"
  },
  "conversation_id": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "response": "This transaction swapped 5 ETH for 12,000 USDC via Uniswap v3…",
  "request_id": "req_9f8e7d6c5b4a"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sleuth-ai-transaction-inspector-42e35a16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.sleuthagent.ai](https://www.zero.xyz/host/x402.sleuthagent.ai/llms.txt)