# does-site-use-vercel

> does-site-use-vercel is a paid API for AI agents from site.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Checks whether a given website uses Vercel for hosting by fetching its homepage and matching Vercel-specific fingerprints in HTML and response headers.

## Facts

- Endpoint: GET https://site.intel.rallylive.ca/site/uses/vercel?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/does-site-use-vercel-c16a4d2e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vf632wceKCR7UY5fZcP_D

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 does-site-use-vercel-c16a4d2e
```

Example prompt: Can you check if shopify.com is using Vercel for hosting — I want to see the evidence it finds in the page or headers?

## When to prefer this

Use this endpoint when you need a fast, low-cost ($0.01) binary check specifically for Vercel hosting detection on a single domain. Prefer it over general tech-stack scanners when your workflow targets Vercel specifically for sales outreach, migration planning, or competitive technographic research. Choose sibling endpoints for other technologies (IIS, Elasticsearch, etc.).

## Known failure modes

- Domain is unreachable or returns a non-200 response, preventing fingerprint matching
- Site uses bot protection or blocks crawlers, returning misleading HTML
- Vercel fingerprints may not be present if the site uses edge caching or custom domains without standard Vercel headers
- False negatives if the site partially uses Vercel but the homepage does not expose fingerprints
- Missing or malformed query parameter causes a 400 error

## How this service works

Does a website use Vercel? Fetches the page (homepage for a bare domain) and matches Vercel's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (hosting). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

## Output

Returns a yes/no answer indicating whether the website uses Vercel, along with an evidence snippet (HTML content or response header values that matched Vercel fingerprints) and a category label of 'hosting'.

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/does-site-use-vercel-c16a4d2e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from site.intel.rallylive.ca](https://www.zero.xyz/host/site.intel.rallylive.ca/llms.txt)