# x402 Agent Tools – Ping / Health Check

> x402 Agent Tools – Ping / Health Check is a paid API for AI agents from api.gptshopltd.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Returns a simple pong response with server timestamp to verify the API endpoint is alive and reachable.

## Facts

- Endpoint: GET https://api.gptshopltd.com/v1/util/ping?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-tools-ping-health-check-af647bad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t0oTP3PqsJk9ylB7qh2uS

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-agent-tools-ping-health-check-af647bad
```

Example prompt: Can you ping the gptshopltd API to check if it's up and responding right now?

## When to prefer this

Use this endpoint when you need a lightweight, low-cost ($0.001 USDC) liveness check for the gptshopltd API before committing to more expensive downstream calls. Ideal for health monitoring, pre-flight checks, and smoke-testing x402 payment integration without side effects.

## Known failure modes

- Server down or unreachable — connection timeout or 5xx error
- x402 payment failure — 402 response if USDC payment on Base/Solana is not properly attached
- Rate limiting — 429 if called too frequently
- Malformed response — unexpected JSON structure if server is degraded

## How this service works

Pay-per-call tools for AI agents. USDC on Base or Solana via x402 v2; no keys, no accounts.

## Output

Returns a JSON object with a boolean 'pong' field (true when the server is healthy) and a 'time' field containing the current server UTC timestamp (ISO 8601 format), e.g. {"pong":true,"time":"2026-10-15T00:00:00.000Z"}.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "pong": true,
  "time": "2026-10-15T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-agent-tools-ping-health-check-af647bad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.gptshopltd.com](https://www.zero.xyz/host/api.gptshopltd.com/llms.txt)