# Sleuth AI x402 On-Chain Investigation API

> Sleuth AI x402 On-Chain Investigation API 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).

Answers natural language questions about on-chain blockchain activity, wallet behavior, and token history using a pay-per-call model settled in USDC on Base via x402.

## Facts

- Endpoint: POST https://x402.sleuthagent.ai/api/v1/ask-me-anything
- 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-x402-on-chain-investigation-api-60a2717f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vujvLJWG0Kb-A3OmJuysg

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-x402-on-chain-investigation-api-60a2717f -d '<json body>'
```

Example prompt: Can you investigate the deployer of the PEPE token on-chain — I want to know who deployed it, whether they've sold their position, and any suspicious wallet behavior linked to them?

## When to prefer this

Choose this endpoint when you need natural language answers to specific on-chain blockchain questions — particularly around token deployers, wallet histories, rug pull detection, and DeFi activity — and are willing to pay $1 USDC per call via x402 on Base. Prefer this over block explorers or raw RPC calls when you want an interpreted, human-readable investigation rather than raw data, and over free analytics APIs when depth and specificity of investigation matter more than cost.

## Known failure modes

- Payment failure if insufficient USDC balance on Base or x402 protocol error
- Ambiguous or unsupported query results in a vague or empty response
- Unknown or very new contract addresses may yield limited on-chain data
- Rate limiting or infrastructure downtime returning 5xx errors
- Malformed question input leading to irrelevant investigation output

## How this service works

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

## Output

A natural language investigation summary answering the submitted question, covering on-chain facts such as deployer identity, wallet transaction history, token movements, and behavioral patterns, along with a unique request_id for 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"
  },
  "query": {
   "type": "string",
   "maxLength": 2000,
   "minLength": 1
  },
  "conversation_id": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "response": "The deployer of PEPE is 0x… who has since sold their full position…",
  "request_id": "req_9f8e7d6c5b4a"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sleuth-ai-x402-on-chain-investigation-api-60a2717f/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)