# Conway Replicatio Structured JSON Extractor

> Conway Replicatio Structured JSON Extractor is a paid API for AI agents from conway-replicatio-cloudflare.nikitamakiel1.workers.dev, paid per call via x402, $0.15/call, status down (last checked 2026-10-13).

Fetches a remote URL and extracts structured JSON data from it based on a natural language prompt, returning a typed JSON object.

## Facts

- Endpoint: POST https://conway-replicatio-cloudflare.nikitamakiel1.workers.dev/api/x402/structured-json?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/conway-replicatio-structured-json-extractor-7ecd742c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UtCZq_Z1ocFtuheC6P59W

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 conway-replicatio-structured-json-extractor-7ecd742c -d '<json body>'
```

Example prompt: Fetch the product listing at https://example.com/products/widget-pro and extract the name, price, availability, and description as a structured JSON object — I need it in a clean machine-readable format.

## When to prefer this

Choose this endpoint when you need to fetch a specific URL and extract its content into a structured, schema-conforming JSON object guided by a natural language prompt. It is ideal for one-shot web extraction tasks where you already know the target URL and want typed, machine-readable output rather than raw HTML or plain text. Prefer it over generic scraping tools when you need the extraction to be prompt-guided and JSON-shaped.

## Known failure modes

- URL is unreachable or returns non-200 status — extraction fails with error in response
- Prompt is too vague for the model to identify relevant fields — returns empty or incomplete data object
- URL content is behind authentication or a JavaScript-only SPA — may return empty or malformed extraction
- Prompt exceeds 1200 character limit — request rejected at input validation
- Payment via x402/USDC not settled — request not processed

## How this service works

Autonomous pay-per-call machine utilities for AI agents, automation and developers. Payments settle in USDC on Base through x402.

## Output

Returns a JSON object with an `ok` boolean, a `data` field containing the structured extraction result as a typed JSON object shaped by the prompt and optional output schema, and a `service` identifier string.

## 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",
     "required": [
      "url",
      "prompt"
     ],
     "properties": {
      "url": {
       "type": "string",
       "format": "uri"
      },
      "prompt": {
       "type": "string",
       "maxLength": 1200,
       "minLength": 3
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "data": {},
  "service": "structured-json"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/conway-replicatio-structured-json-extractor-7ecd742c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from conway-replicatio-cloudflare.nikitamakiel1.workers.dev](https://www.zero.xyz/host/conway-replicatio-cloudflare.nikitamakiel1.workers.dev/llms.txt)