# Blockchain.info Bitcoin Address Explorer API

> Blockchain.info Bitcoin Address Explorer API is a paid API for AI agents from api.blockchain.info, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Retrieves on-chain data for a given Bitcoin or Bitcoin Cash address via the Blockchain.com Explorer API

## Facts

- Endpoint: POST https://api.blockchain.info/explorer-gateway-kt/x402/btc/address?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-info-bitcoin-address-explorer-api-89d900b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4xH7y17v2eGQOzjZTNsIP

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 blockchain-info-bitcoin-address-explorer-api-89d900b6 -d '<json body>'
```

Example prompt: Can you look up the balance and transaction history for Bitcoin address 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf Na using the Blockchain.com Explorer?

## When to prefer this

Choose this endpoint when you need authoritative, real-time Bitcoin or Bitcoin Cash address data sourced directly from the Blockchain.com Explorer — one of the most trusted and widely-used block explorers. Prefer it over generic blockchain APIs when you need reliable BTC/BCH address lookups with a per-call micropayment model rather than API key subscriptions.

## Known failure modes

- Invalid or malformed address returns an error response
- Address not found on-chain (unused address) may return empty/zero balances
- Rate limiting if called too frequently
- Payment failure via x402 protocol if USDC balance is insufficient
- Network timeouts if blockchain node is congested

## How this service works

Paid AI-agent access to Blockchain.com Explorer API

## Output

Returns on-chain data for the specified Bitcoin or Bitcoin Cash address, typically including current balance, total received, total sent, and a list of associated transactions with their details (txid, amounts, block confirmation status).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "description": "Bitcoin or Bitcoin Cash address"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-info-bitcoin-address-explorer-api-89d900b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.blockchain.info](https://www.zero.xyz/host/api.blockchain.info/llms.txt)