# x402 IP Echo API

> x402 IP Echo API is a paid API for AI agents from workspace-x402-paywall.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Returns the caller's public IP address for $0.001 USDC per call via x402 micropayment on Base or Solana

## Facts

- Endpoint: GET https://workspace-x402-paywall.onrender.com/utils/ip?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-ip-echo-api-0d74c460
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ozVQr-WrG0ppNECuky0_6

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 x402-ip-echo-api-0d74c460
```

Example prompt: What's the public IP address this request is coming from? Return it as JSON.

## When to prefer this

Choose this endpoint when you need a pay-per-call, no-subscription IP echo with micropayment via USDC over x402 on Base or Solana — ideal for agents that need occasional IP detection without managing API keys or monthly billing.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- Unsupported format value — may default or return error
- Service temporarily unavailable on Render free tier — returns 503

## How this service works

66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.

## Output

Returns the public IP address of the calling client, either as a JSON object with an IP field or as a plain text string, depending on the requested format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-ip-echo-api-0d74c460/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workspace-x402-paywall.onrender.com](https://www.zero.xyz/host/workspace-x402-paywall.onrender.com/llms.txt)