# 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, $0.002/call, status unknown (last checked 2026-09-14).

Submits a URL for a quick pre-interaction check, returning a brief summary, domain info, and page-level signals before an agent interacts with that link.

## Facts

- Endpoint: POST https://54ch10.uk/v1/paste/free
- Price: $0.002/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-e3bfa143
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NGj_pYxgzdZrpkl95DrdX

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-e3bfa143 -d '<json body>'
```

Example prompt: Before I click this link someone sent me — https://example-promo.io/deal — can you run a quick pre-interact check on it and tell me what the domain is and what the page is about?

## When to prefer this

Choose this endpoint when an AI agent or user needs a lightweight, fast pre-interaction signal on a URL — domain identity, page brief, and basic page signals — before deciding to visit or process the link. It is especially useful in agentic pipelines where a quick sanity check is needed before committing further actions to an unknown link. Not suitable for deep content extraction, financial analysis, or full-page scraping.

## Known failure modes

- Invalid or malformed URL input returns an error
- Unreachable or timeout on the target URL may yield incomplete page data
- TTL expiry (3600s) means the result ID and retrieve URL will stop working after 1 hour
- Rate limit exceeded if call volume surpasses paid quota
- Non-HTTP/HTTPS URLs may be rejected

## 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 an ephemeral result ID, an ok status, a retrieve URL for fetching the result, a TTL of 3600 seconds, a tier label, a disclaimer noting the service is informational only, and a note that results are for ephemeral agent handoff and not stored in a vault.

## 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": [
      "content"
     ],
     "properties": {
      "content": {
       "type": "string",
       "description": "Short plaintext payload (max 64KB)"
      },
      "ttl_seconds": {
       "type": "integer",
       "description": "TTL seconds (default 3600, max 86400)"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "bodyType": {
     "type": "string",
     "const": "json"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "abc123xyz",
  "ok": true,
  "note": "Ephemeral agent handoff only — NOT a vault.",
  "tier": "x402",
  "disclaimer": "Informational tooling only. Not financial advice. No custody, trading, or token promotion. Scores are imperfect heuristics — verify independently.",
  "ttl_seconds": 3600,
  "retrieve_url": "https://54ch10.uk/v1/paste?id=abc123xyz"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/54ch10-pre-interact-url-check-e3bfa143/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)