# Explorer Gateway API — Bitcoin Address Transactions

> Explorer Gateway API — Bitcoin Address Transactions is a paid API for AI agents from api.blockchain.com, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-01).

Retrieves a paginated list of transactions for a given Bitcoin address via the Blockchain.com explorer gateway

## Facts

- Endpoint: POST https://api.blockchain.com/explorer-gateway-kt/x402/btc/address/transactions?utm_source=zero.xyz
- Price: $0.0015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/explorer-gateway-api-bitcoin-address-transactions-dcaf76c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cmZta8OvmWbTp5WxQ_qzT

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 explorer-gateway-api-bitcoin-address-transactions-dcaf76c0 -d '<json body>'
```

Example prompt: Show me the last 20 Bitcoin transactions for the address 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf — pull from the Blockchain.com explorer gateway.

## When to prefer this

Use this endpoint when you need on-chain Bitcoin transaction history for a specific address from Blockchain.com's explorer infrastructure. Prefer this over other blockchain APIs when you need paginated access to BTC transaction data and are operating within an x402 micropayment-enabled agent workflow. It is specifically suited for Bitcoin (BTC) address lookups, not Ethereum, Solana, or Bitcoin Cash — use sibling endpoints for those chains.

## Known failure modes

- Invalid or malformed Bitcoin address returns an error or empty result
- Offset beyond total transaction count returns empty list
- Limit value outside 1-50 range causes validation error
- Address with no transactions returns empty array
- Network or upstream blockchain node unavailability causes timeout or 503
- Payment not fulfilled (x402 protocol) results in 402 Payment Required

## How this service works

Blockchain explorer gateway — Solana, Bitcoin, Bitcoin Cash, Ethereum

## Output

Returns a JSON array of transaction records associated with the specified Bitcoin address, including transaction IDs, amounts, timestamps, and related metadata, paginated according to the limit and offset parameters provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 50,
   "minimum": 1
  },
  "offset": {
   "type": "integer",
   "default": 0,
   "minimum": 0
  },
  "address": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "format": "application/json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/explorer-gateway-api-bitcoin-address-transactions-dcaf76c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.blockchain.com](https://www.zero.xyz/host/api.blockchain.com/llms.txt)