# Bitcoin Transaction Lookup via x402helper.xyz

> Bitcoin Transaction Lookup via x402helper.xyz is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.013/call, status unknown (last checked 2026-10-31).

Looks up a Bitcoin transaction by its transaction ID and returns details, accessible via USDC micropayment.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/btc/tx?utm_source=zero.xyz
- Price: $0.013/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bitcoin-transaction-lookup-via-x402helper-xyz-61a26247
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5aBXevsAT-dDvDc7UgQLI

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 bitcoin-transaction-lookup-via-x402helper-xyz-61a26247
```

Example prompt: Can you look up the Bitcoin transaction with txid a1b2c3d4e5f6...0123456789abcdef and tell me the details?

## When to prefer this

Use this endpoint when you need lightweight, pay-per-use Bitcoin transaction lookups without setting up a full Bitcoin node or subscribing to a blockchain data provider. Ideal for AI agents that need occasional BTC transaction verification and want to pay only per call via USDC micropayment.

## Known failure modes

- Invalid or malformed txid (not 64 hex characters) returns an error
- Transaction not found on the Bitcoin network
- Payment not completed — x402 payment required before data is returned
- Network or upstream Bitcoin node unavailability

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a JSON object with a 'success' boolean and a 'result' object containing Bitcoin transaction details for the provided txid.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "txid"
     ],
     "properties": {
      "txid": {
       "type": "string",
       "default": null,
       "description": "Bitcoin transaction id (64 hex characters)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-transaction-lookup-via-x402helper-xyz-61a26247/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)