# HTTPay Etherscan Blockchain Explorer API Gateway

> HTTPay Etherscan Blockchain Explorer API Gateway is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Proxies requests to the Etherscan blockchain explorer API, providing access to Ethereum on-chain data including transactions, blocks, tokens, and contract info.

## Facts

- Endpoint: POST https://httpay.xyz/api/gateway/etherscan/test-*path/*
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-xyz-b4b1551a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_utW7FmI0QSOjqGFYG-pKV

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 httpay-xyz-b4b1551a -d '<json body>'
```

Example prompt: Can you look up all ERC-20 token transfers for the Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 using the Etherscan API gateway?

## When to prefer this

Use this endpoint when you need access to the Etherscan API without managing your own Etherscan API key, and are willing to pay micro-fees per call via x402/USDC. Ideal for agents that need occasional on-chain Ethereum lookups without key provisioning overhead. Prefer over direct Etherscan calls when operating in a keyless, pay-per-use agent context.

## Known failure modes

- Invalid or unsupported Etherscan API path returns 400 or 404
- Etherscan API rate limit exceeded upstream returns error
- Malformed Ethereum address or hash causes Etherscan to return an error result
- Payment not confirmed results in 402 response blocking the request
- Etherscan API outage causes gateway to return 502 or timeout

## How this service works

API Gateway: Etherscan blockchain explorer API

## Output

Returns the raw Etherscan API response for the requested query — which may include transaction lists, balances, contract data, token transfer logs, gas oracle data, or other on-chain information depending on the path and parameters provided.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-xyz-b4b1551a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)