# HOOTER Ping – x402 Smoke-Test Keepalive

> HOOTER Ping – x402 Smoke-Test Keepalive is a paid API for AI agents from ping-greatly-achieving-pharmacy.trycloudflare.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a minimal ok/agent/network/message JSON response for $0.01 USDC, serving as a smoke-test or keepalive ping for x402 payment-gated agent infrastructure.

## Facts

- Endpoint: GET https://ping-greatly-achieving-pharmacy.trycloudflare.com/hoot
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hooter-ping-x402-smoke-test-keepalive-f2bf0352
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Okrv7KrYd_4vFbf4GZpok

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 hooter-ping-x402-smoke-test-keepalive-f2bf0352
```

Example prompt: Send a $0.01 USDC ping to the HOOTER hoot endpoint on Base and tell me if you get back an ok status — I want to confirm my x402 payment flow is working.

## When to prefer this

Choose this endpoint when you need the cheapest possible end-to-end validation that an x402 micropayment pipeline on Base is functional. It is purpose-built as a smoke-test or keepalive — not for retrieving data or performing real work. Prefer it over more expensive endpoints when your only goal is confirming wallet connectivity, payment authorization, and x402 protocol compliance.

## Known failure modes

- Insufficient USDC balance on Base — payment rejected, no response body
- x402 facilitator unreachable — connection timeout or HTTP 402 not resolved
- Cloudflare tunnel down — endpoint returns 502/503
- Malformed payment header — 402 payment required error returned
- Network congestion on Base — slow or failed transaction confirmation

## How this service works

Pay $0.01 USDC on Base for a $HOOTER confirmation hoot — a tiny agent ping that returns ok/agent/network/message JSON. Use as a smoke-test or keepalive for x402 buyers.

## Output

A small JSON object containing at minimum: a status field (ok), an agent identifier, a network identifier, and a message string — confirming that the x402 payment was processed and the endpoint is reachable.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hooter-ping-x402-smoke-test-keepalive-f2bf0352/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ping-greatly-achieving-pharmacy.trycloudflare.com](https://www.zero.xyz/host/ping-greatly-achieving-pharmacy.trycloudflare.com/llms.txt)