# 54ch10 Pre-Interact URL Check

> 54ch10 Pre-Interact URL Check is a paid API for AI agents from 54ch10.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Fetches a public URL and returns its content as markdown or plain text, along with domain and page metadata, for pre-interaction analysis.

## Facts

- Endpoint: GET https://54ch10.uk/v1/fetch/free
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/54ch10-pre-interact-url-check-6d0456aa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_us35Awr4ZcsUu8HMWloJ-

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 54ch10-pre-interact-url-check-6d0456aa
```

Example prompt: Before I interact with this link, can you fetch it and show me the page content as markdown so I know what it contains? The URL is https://example.com/some-page.

## When to prefer this

Use this endpoint when an AI agent needs to inspect or preview the contents of a public URL before interacting with it — especially in Web3 or DeFi contexts where pre-interaction safety checks matter. It is ideal for lightweight, pay-per-call URL fetching without standing up your own scraping infrastructure. Prefer it over generic HTTP clients when you want structured output (markdown/text) with domain metadata in a single call, billed via x402 micropayments.

## Known failure modes

- URL is not publicly accessible or returns a non-200 status
- URL scheme is not http/https (rejected by schema)
- Rate limit exceeded (beyond 80 calls per $1)
- Malformed or missing url query parameter
- Private, paywalled, or bot-blocked pages may return incomplete content
- Network timeouts for slow-loading pages

## How this service works

54ch10: pre-interact URL check. Paste a link, get brief + domain + page. Taste /v1/open/free. 80 calls for $1. Wire in 30s. Analytics-only tooling. Not financial advice.

## Output

Returns a JSON object with: ok (boolean), the resolved URL, tier, bytes fetched, format (markdown or text), HTTP status code, the extracted page content as markdown or plain text, content type, and a disclaimer noting it is informational tooling only.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ]
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Public http(s) URL to fetch"
      },
      "format": {
       "type": "string",
       "enum": [
        "markdown",
        "text"
       ],
       "description": "Prefer markdown extraction"
      }
     },
     "required": [
      "url"
     ]
    }
   },
   "required": [
    "type",
    "method"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "required": [
    "type"
   ]
  }
 },
 "required": [
  "input"
 ]
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "url": "https://example.com",
  "tier": "x402",
  "bytes": 1200,
  "format": "markdown",
  "status": 200,
  "markdown": "# Example Domain\n\n…",
  "disclaimer": "Informational tooling only. Not financial advice. No custody, trading, or token promotion. Scores are imperfect heuristics — verify independently.",
  "contentType": "text/html"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/54ch10-pre-interact-url-check-6d0456aa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 54ch10.uk](https://www.zero.xyz/host/54ch10.uk/llms.txt)