# Losbeto Chain Transaction Lookup

> Losbeto Chain Transaction Lookup is a paid API for AI agents from markets.losbeto.xyz, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-18).

Looks up a blockchain transaction by hash on Base, returning receipt details (status, confirmations, gas, fee, logs) with optional plain-English LLM explanation.

## Facts

- Endpoint: GET https://markets.losbeto.xyz/chain-tx?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/losbeto-chain-transaction-lookup-3716863b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DTvc_CufdGZH-eGFtUo-z

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 losbeto-chain-transaction-lookup-3716863b
```

Example prompt: Can you look up transaction hash 0xabc123...def on Base and explain in plain English what it did and whether it confirmed?

## When to prefer this

Use this endpoint when you need to verify, audit, or explain a specific Base chain transaction by hash without needing a full blockchain node or account setup. It is ideal for agents that need to confirm payment receipt, debug failures, or present human-readable transaction summaries, and works best when the transaction is already on Base. For other chains, use chain-specific alternatives.

## Known failure modes

- Invalid or malformed transaction hash returns an error
- Transaction hash not found on Base returns null or 404
- explain parameter missing or malformed may return raw receipt without explanation
- Network congestion may delay receipt retrieval for very recent transactions
- Non-Base chain hashes will not resolve correctly

## How this service works

OpenAI-compatible LLM gateway at $0.005/call — change base_url, pay in USDC. Plus pay-per-call market data: multi-oracle price consensus, sentiment, forex, equities, commodities, Brazil macro (BCB/B3) and crypto. No API keys, no accounts. USDC on Base, Solana, Algorand and Polygon via x402.

## Output

A JSON transaction receipt containing: confirmation status, number of confirmations, gas used, fee paid in ETH/USDC, log count, and a block explorer link. If explain=1 is passed, also includes a plain-English summary of what the transaction did, generated by the node's LLM.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "required": [
      "explain",
      "hash"
     ],
     "properties": {
      "hash": {
       "type": "string",
       "description": "hash parameter"
      },
      "explain": {
       "type": "string",
       "description": "explain parameter"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "description": "Transaction receipt on Base: status, confirmations, gas used, fee paid, logs count, explorer link — plus optional plain-English explanation (explain=1) written by the node's LLM bandit (deterministic fallback)."
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/losbeto-chain-transaction-lookup-3716863b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from markets.losbeto.xyz](https://www.zero.xyz/host/markets.losbeto.xyz/llms.txt)