# Chrombot Eval Engine Ping

> Chrombot Eval Engine Ping is a paid API for AI agents from chrombot-x402-qf0bnhmrg-eval-engine.vercel.app, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Checks whether the Chrombot x402 eval engine server is alive and responding

## Facts

- Endpoint: GET https://chrombot-x402-qf0bnhmrg-eval-engine.vercel.app/ping
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chrombot-eval-engine-ping-299c0b04
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__nMYdfemTFJSijiggFZqM

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 chrombot-eval-engine-ping-299c0b04
```

Example prompt: Check if the chrombot x402 eval engine server is alive and responding right now.

## When to prefer this

Use this endpoint when you need to verify that the Chrombot x402 eval engine is running before making more expensive downstream calls, or to monitor its availability over time.

## Known failure modes

- Server is down or unreachable — returns connection error or timeout
- Cold-start delay on Vercel causes slow or failed response
- Payment not processed — x402 payment required before response is served

## How this service works

Ping the server to check if it's alive

## Output

A liveness response confirming whether the Chrombot x402 eval engine server is up and reachable, typically a simple acknowledgment or status indicator.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "input": {
  "type": "http",
  "method": "GET",
  "bodyType": "json",
  "bodyFields": {}
 },
 "properties": {
  "message": {
   "type": "string",
   "description": "Pong"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chrombot-eval-engine-ping-299c0b04/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chrombot-x402-qf0bnhmrg-eval-engine.vercel.app](https://www.zero.xyz/host/chrombot-x402-qf0bnhmrg-eval-engine.vercel.app/llms.txt)