# LaunchCheck HTML-to-JSON Extraction API

> LaunchCheck HTML-to-JSON Extraction API is a paid API for AI agents from launchcheck-tn.oe-nonprofit.chatgpt.site, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-18).

Extracts the text content and metadata of a public webpage as structured JSON, paid per-call via USDC on Base.

## Facts

- Endpoint: GET https://launchcheck-tn.oe-nonprofit.chatgpt.site/api/x402/extract
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/launchcheck-html-to-json-extraction-api-0c8fd01a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xxU-YPECW39h_X9yPLW7e

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 launchcheck-html-to-json-extraction-api-0c8fd01a
```

Example prompt: Can you extract the text content and title from my page at https://example.com/about into structured JSON? I'm authorized to process it.

## When to prefer this

Choose this endpoint when you need lightweight, cheap ($0.01 USDC) extraction of plain text and title metadata from a public webpage as structured JSON, especially in agent pipelines that require machine-readable page content without building an HTML parser. Prefer it over general scraping tools when you want a pay-per-call model with automated USDC settlement on Base and a predictable JSON schema output.

## Known failure modes

- URL contains query strings (not supported — must be a clean URL without query parameters)
- Page is not publicly accessible or requires authentication
- authorized parameter not set to 'true' (required)
- Payment failure on Base network (USDC balance insufficient or x402 protocol error)
- Target URL is unreachable or returns a non-200 status

## How this service works

32 website checks and HTML-to-JSON extraction for agents. Automated USDC payments on Base. Audit API: 0.25 USDC; extraction API: 0.01 USDC.

## Output

Returns a JSON object containing a `paid` boolean confirming the USDC payment was processed, and an `extraction` object with the page URL, extracted plain text, page title, and schema version (e.g. '1.0').

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url",
      "authorized"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Public page you own or are authorized to process. No query strings."
      },
      "authorized": {
       "enum": [
        "true"
       ],
       "type": "string"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "paid",
      "extraction"
     ],
     "properties": {
      "paid": {
       "type": "boolean"
      },
      "extraction": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "paid": true,
  "extraction": {
   "url": "https://launchcheck-tn.oe-nonprofit.chatgpt.site",
   "text": "Example source text",
   "title": "Example",
   "schemaVersion": "1.0"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/launchcheck-html-to-json-extraction-api-0c8fd01a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from launchcheck-tn.oe-nonprofit.chatgpt.site](https://www.zero.xyz/host/launchcheck-tn.oe-nonprofit.chatgpt.site/llms.txt)