# FreeTier Agent API — Page Check

> FreeTier Agent API — Page Check is a paid API for AI agents from freetier-agent-api.pages.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-18).

Checks a web page URL and returns its HTTP status, title, and AI-agent friendliness signals including bot permissions and llms.txt presence

## Facts

- Endpoint: GET https://freetier-agent-api.pages.dev/api/page-check?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/freetier-agent-api-page-check-d911ecdd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OGWgdch_HguvsTfUo0C9V

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 freetier-agent-api-page-check-d911ecdd
```

Example prompt: Can you check if https://anthropic.com is accessible, what its HTTP status is, and whether it allows AI bots like GPTBot to crawl it?

## When to prefer this

Use this endpoint when you need a quick, paid-per-call check of whether a URL is live, what HTTP status it returns, and whether the site explicitly permits or blocks AI bots — especially when you need the llms.txt signal and agent friendliness score before deciding to crawl or integrate a site into an agent workflow. Prefer this over a general HTTP ping when AI-accessibility metadata (bot permissions, llms.txt) is relevant to your decision.

## Known failure modes

- URL is unreachable or times out — may return error status or network failure
- Invalid or malformed URL input causes a 400-level error
- Target site blocks the checker's IP or returns a CAPTCHA
- Page returns a redirect chain that cannot be resolved
- Payment not settled via x402 results in a 402 response before the check runs

## How this service works

Pay-per-call data API for AI agents: AI model prices and cost calculator, 4,259 MCP servers, email domain checks, text-to-JSON extraction, country/holiday/currency lookup, page and link checks, page-to-markdown, 2,230 verified APIs. x402, USDC on Base, no signup. Sources cited in every response.

## Output

Returns a JSON object with the URL, page title, HTTP status code, and an agent_friendliness object containing a numeric score, per-bot crawl permission flags (e.g. GPTBot: allowed/disallowed), and a boolean indicating whether an llms.txt file is present.

## 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"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com",
  "title": "Example Domain",
  "status": 200,
  "agent_friendliness": {
   "score": 55,
   "ai_bots": {
    "GPTBot": "allowed"
   },
   "llms_txt": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/freetier-agent-api-page-check-d911ecdd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from freetier-agent-api.pages.dev](https://www.zero.xyz/host/freetier-agent-api.pages.dev/llms.txt)