# SmartFlow Pro AI x402 Endpoint Health Check

> SmartFlow Pro AI x402 Endpoint Health Check is a paid API for AI agents from api.smartflowproai.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Verifies real-time health and x402 payment compatibility of any x402-enabled API endpoint

## Facts

- Endpoint: GET https://api.smartflowproai.com/bazaar/health-check
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-smartflowproai-com-ee6bc044
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-wSXMSI1_hVx0Ptw5P2Sq

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 api-smartflowproai-com-ee6bc044
```

Example prompt: Can you check whether https://api.example.com/data is healthy and properly set up for x402 payments — I want to know its response time, which network it's on, and whether the x402 header is present?

## When to prefer this

Use this endpoint when you need to confirm an x402-enabled API is live and properly configured before invoking it in an agent workflow. Ideal for pre-flight validation before making paid API calls, debugging x402 integration issues, or monitoring the uptime of x402-gated services. Prefer this over generic HTTP ping tools when x402 payment header presence and network/chain information are relevant.

## Known failure modes

- Target URL is unreachable — endpoint may return unhealthy status or timeout
- Target URL does not support x402 — x402HeaderPresent will be false
- Invalid or malformed URL provided in queryParams — likely returns a 400 bad request
- Target endpoint is slow — high responseTime value returned but still counted as healthy
- Network connectivity issues from health-check service — intermittent failures possible

## How this service works

Real-time x402 endpoint health verification for any x402-enabled API

## Output

Returns a JSON object with: status (e.g. 'healthy'), the blockchain network ID (e.g. 'eip155:8453'), provider name, ISO timestamp of the check, response time in milliseconds, payment scheme type (e.g. 'exact'), and a boolean confirming whether the x402 payment header is present.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "url": "https://api.example.com/health"
  }
 }
}
```

## 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",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "The x402-enabled endpoint URL to verify"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "status",
  "network",
  "provider",
  "checkedAt",
  "responseTime",
  "paymentScheme",
  "x402HeaderPresent"
 ],
 "properties": {
  "status": {
   "type": "string"
  },
  "network": {
   "type": "string"
  },
  "provider": {
   "type": "string"
  },
  "checkedAt": {
   "type": "string"
  },
  "responseTime": {
   "type": "number"
  },
  "paymentScheme": {
   "type": "string"
  },
  "x402HeaderPresent": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-smartflowproai-com-ee6bc044/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.smartflowproai.com](https://www.zero.xyz/host/api.smartflowproai.com/llms.txt)