# Explorer Gateway API – Ethereum Address Lookup

> Explorer Gateway API – Ethereum Address Lookup 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 paginated transaction history and on-chain data for a given Ethereum address via blockchain.com's explorer gateway

## Facts

- Endpoint: POST https://api.blockchain.com/explorer-gateway-kt/x402/eth/address?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-ethereum-address-lookup-44636c36
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kC-sWphAL8QHcFX4kA8De

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-ethereum-address-lookup-44636c36 -d '<json body>'
```

Example prompt: Pull up the transaction history for Ethereum address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on ETH — show me the first page of 20 transactions.

## When to prefer this

Choose this endpoint when you need paginated, on-chain Ethereum transaction history for a specific wallet address via a trusted, blockchain.com-backed explorer gateway. It is well-suited for auditing wallet activity, monitoring DeFi interactions, or investigating address behavior on the ETH network. Prefer it over raw node RPC calls when you want a clean REST API with structured JSON output and no need to manage a full node.

## Known failure modes

- Invalid or malformed Ethereum address returns a 400 error
- Unsupported network value causes a validation error
- Page number out of range returns empty results or an error
- Payment failure (x402) blocks access if USDC payment is not provided
- Rate limiting or network timeouts may cause 503 or timeout responses
- Address with no transaction history returns an empty result set

## How this service works

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

## Output

Returns a JSON object containing a paginated list of transactions associated with the specified Ethereum address, including details such as transaction hashes, timestamps, amounts, counterparties, and status — along with pagination metadata indicating total count and current page.

## 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/explorer-gateway-api-ethereum-address-lookup-44636c36/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)