# HoodGrow API Ping

> HoodGrow API Ping is a paid API for AI agents from www.hoodgrow.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-30).

A minimal test endpoint that confirms the HoodGrow x402 payment-gated API is reachable and functioning, charged at $0.001 USDC per call.

## Facts

- Endpoint: GET https://www.hoodgrow.com/api/agent/ping?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hoodgrow-api-ping-b9b9fb4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q_JzEBzFuDXOisXx1diUg

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 hoodgrow-api-ping-b9b9fb4f
```

Example prompt: Send a quick ping to the HoodGrow API to confirm everything is working and I can make x402 micropayment calls.

## When to prefer this

Use this endpoint when you need to verify that your x402 payment integration with HoodGrow is correctly configured, test wallet connectivity with minimal cost ($0.001 USDC), or perform a health check before invoking more expensive HoodGrow data endpoints for Robinhood Chain stock tokens.

## Known failure modes

- Insufficient USDC balance — payment rejected, 402 Payment Required returned
- Invalid or missing x402 payment header — authentication failure
- Network timeout if HoodGrow servers are temporarily unavailable
- Rate limiting if the endpoint is called too frequently in a short window

## How this service works

x402 test call ($0.001).

## Output

A minimal HTTP response confirming the endpoint is live and the x402 micropayment of $0.001 USDC was accepted; typically a simple success acknowledgement or pong-style payload indicating API availability.

## 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/hoodgrow-api-ping-b9b9fb4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.hoodgrow.com](https://www.zero.xyz/host/www.hoodgrow.com/llms.txt)