# does-site-use-nextjs

> does-site-use-nextjs 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 the Next.js framework by fingerprinting its HTML and response headers, returning a yes/no answer with evidence.

## Facts

- Endpoint: GET https://site.intel.rallylive.ca/site/uses/nextjs?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-nextjs-ab9edf56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JZxr0BbQqjqCQl5H2iuDh

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-nextjs-ab9edf56
```

Example prompt: Can you check if shopify.com is built with Next.js? I need to know the framework and see the evidence from the page.

## When to prefer this

Use this endpoint when you need a single, cheap ($0.01) per-domain check specifically for Next.js detection with evidence. Prefer it over broader tech-stack APIs when you only care about the Next.js signal and want to minimize cost per lookup. It is ideal for bulk prospecting pipelines where each domain is checked individually, or for one-off spot checks during sales or migration workflows.

## Known failure modes

- Domain unreachable or returns a non-200 response — detection cannot proceed
- Site uses heavy client-side rendering so fingerprints are not present in server-rendered HTML
- Next.js fingerprints are obscured by a CDN or reverse proxy stripping headers
- Rate limiting or blocking by the target site prevents fetching the page
- Ambiguous result if the site partially proxies Next.js assets but isn't itself a Next.js app

## How this service works

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

## Output

Returns a yes/no boolean indicating whether the site uses Next.js, along with the matched evidence snippet (e.g. a specific HTML chunk or response header value) and a category label (framework). This lets agents programmatically branch on adoption status or surface the proof to a human.

## 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-nextjs-ab9edf56/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)