# HTTPay Base RPC Gateway

> HTTPay Base RPC 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).

Routes JSON-RPC calls to the Ethereum Base network via a pay-per-use HTTP gateway using the x402 micropayment protocol

## Facts

- Endpoint: POST https://httpay.xyz/api/gateway/eth-base/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-0fe38c02
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_80w-FPG9B85VaUDi4jvX9

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-0fe38c02 -d '<json body>'
```

Example prompt: Call eth_getBalance for address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on the Base network using the HTTPay RPC gateway.

## When to prefer this

Choose this endpoint when you need pay-per-use Base network RPC access without managing an API key or subscription. Ideal for agents making occasional or low-volume Base blockchain queries (balances, contract calls, transaction status) where micropayment per call is preferable to a monthly plan.

## Known failure modes

- Payment not included or insufficient — 402 Payment Required
- Invalid JSON-RPC method or params — returns RPC error object
- Network unavailable or upstream RPC down — 502/503
- Rate limit exceeded — 429
- Malformed request body — 400

## How this service works

API Gateway: Base RPC

## Output

Standard Ethereum JSON-RPC response object containing the result of the requested RPC method call (e.g. balance in wei, block data, transaction receipt, call return value), or an error object if the call fails.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-xyz-0fe38c02/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)