# Beggar Bot UserOpHash Lookup (Base Mainnet)

> Beggar Bot UserOpHash Lookup (Base Mainnet) is a paid API for AI agents from beggar-bot-demand.beggarbot.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-04).

Looks up a UserOperation hash on Base mainnet for blockchain transaction analysis, paid via x402 micropayment.

## Facts

- Endpoint: GET https://beggar-bot-demand.beggarbot.workers.dev/v1/userophash?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/beggar-bot-userophash-lookup-base-mainnet-958c3762
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v57-ZmGfBVSmokIhZoo05

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 beggar-bot-userophash-lookup-base-mainnet-958c3762
```

Example prompt: Can you look up the UserOperation hash 0xabc123... on Base mainnet and tell me what details you find about that transaction?

## When to prefer this

Use this endpoint when you need to resolve or audit a specific UserOperation hash on Base mainnet (ERC-4337 account abstraction), especially in agent workflows that process smart account transactions and need structured userop metadata. Prefer this over generic block explorers when you need machine-readable JSON output consumable by an AI agent via a micropayment API.

## Known failure modes

- Invalid or malformed userop hash returns an error response
- Hash not found on Base mainnet (hash may belong to a different network)
- Payment not provided or invalid x402 payment header results in 402 Payment Required
- Network parameter mismatch (e.g. querying base-sepolia hash against mainnet)
- Cloudflare Worker timeout or upstream RPC failure

## How this service works

Paid: /v1/verify, /v1/risk, /v1/receipt cost $0.01 USDC per call on Base mainnet via x402 (payTo 0x719227f384b66BFEF00093D6d8d32fA9dC2B40e7); utilities analyze Base mainnet (USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) by default, network=base-sepolia optional; /v1/receipt/verify and discovery files are free. Operator: Beggar Bot.

## Output

Returns JSON containing UserOperation hash details from Base mainnet, including associated call data, bundler information, and transaction metadata for the specified userop hash.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/beggar-bot-userophash-lookup-base-mainnet-958c3762/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from beggar-bot-demand.beggarbot.workers.dev](https://www.zero.xyz/host/beggar-bot-demand.beggarbot.workers.dev/llms.txt)