# Blockchain.info Explorer Gateway — Ethereum Address Lookup

> Blockchain.info Explorer Gateway — Ethereum Address Lookup is a paid API for AI agents from api.blockchain.info, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-30).

Retrieves paginated transaction and activity data for a given Ethereum address via the Blockchain.info explorer gateway

## Facts

- Endpoint: POST https://api.blockchain.info/explorer-gateway-kt/x402/eth/address?utm_source=zero.xyz
- Price: $0.0015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-info-explorer-gateway-ethereum-address-lookup-4e3ecdda
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oNHg0u8OIByW6iDzGCbv3

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-explorer-gateway-ethereum-address-lookup-4e3ecdda -d '<json body>'
```

Example prompt: Pull the transaction history for Ethereum address 0xAbC123... on the ETH network — show me the first 20 results.

## When to prefer this

Use this endpoint when you need paginated on-chain transaction data for a specific Ethereum address and want a reliable blockchain explorer backend (Blockchain.info) with x402 micropayment access. Prefer this over self-hosted node queries when you lack direct Ethereum node access, or over generic block explorer scraping when you need structured JSON output with controlled pagination.

## Known failure modes

- Invalid or malformed Ethereum address returns an error or empty result
- Network identifier mismatch (e.g. submitting a BTC address for ETH) causes lookup failure
- Page or size values outside allowed ranges (size > 50 or page < 0) return validation errors
- Payment failure (x402 payment not accepted) blocks the request
- Rate limiting or gateway timeout if the explorer backend is slow
- Address with no transaction history returns an empty results set

## How this service works

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

## Output

Returns a JSON response containing paginated transaction records associated with the queried Ethereum address, including details about individual on-chain activity such as transaction hashes, amounts, timestamps, and counterparty addresses.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "page": {
   "type": "integer",
   "default": 1,
   "minimum": 0
  },
  "size": {
   "type": "integer",
   "default": 20,
   "maximum": 50,
   "minimum": 1
  },
  "address": {
   "type": "string"
  },
  "network": {
   "type": "string",
   "example": "ETH"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-info-explorer-gateway-ethereum-address-lookup-4e3ecdda/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)