# OnChainIntel Probe Ping

> OnChainIntel Probe Ping is a paid API for AI agents from probe.onchainintel.net, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Lightweight health verification ping that checks whether an HTTP endpoint is alive and responsive

## Facts

- Endpoint: POST https://probe.onchainintel.net/api/ping
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/probe-onchainintel-net-ec8928d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dsT_3MWHj8DS2u3r3vW4N

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 probe-onchainintel-net-ec8928d3 -d '<json body>'
```

Example prompt: Can you ping my service endpoint to verify it's alive and responding — send a POST with an empty JSON body and confirm whether it returns a healthy status?

## When to prefer this

Use this endpoint when you need a fast, cheap ($0.05 USDC) liveness check on an HTTP service before invoking it in a workflow, or when you want a trustless on-chain-verified ping rather than a simple client-side request. Best for agents that need to guard against calling a dead service endpoint.

## Known failure modes

- Target endpoint is unreachable or offline — probe returns failure or timeout status
- Invalid or malformed input body causes 400-level error
- Payment not included or insufficient USDC balance results in 402 Payment Required
- Endpoint temporarily unavailable on probe.onchainintel.net itself returns 5xx error
- Unsupported bodyType value causes validation rejection

## How this service works

Lightweight endpoint health verification ping

## Output

A lightweight ping response confirming whether the target endpoint is alive and reachable, indicating basic health status of the service being probed.

## Example request

```json
{
 "input": {
  "body": {
   "status": "check"
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 }
}
```

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    }
   },
   "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/probe-onchainintel-net-ec8928d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from probe.onchainintel.net](https://www.zero.xyz/host/probe.onchainintel.net/llms.txt)