# does-site-use-fastly

> does-site-use-fastly is a paid API for AI agents from site.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Detects whether a website uses Fastly CDN by fetching its homepage and fingerprinting HTML and response headers, returning a yes/no result with evidence.

## Facts

- Endpoint: GET https://site.intel.rallylive.ca/site/uses/fastly?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/does-site-use-fastly-afa64502
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VJr_C7FsGXKrajf8H1HPj

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-fastly-afa64502
```

Example prompt: Can you check whether stripe.com uses Fastly as its CDN? I want to know if they're on Fastly, and if so, what evidence was found in their page or headers.

## When to prefer this

Use this endpoint when you need a fast, single-domain technographic check specifically for Fastly CDN usage — ideal for sales prospecting, competitor stack analysis, or migration planning workflows. Prefer the bulk sibling endpoint for checking multiple domains at once. Choose this over generic HTTP header tools when you want pre-built Fastly-specific fingerprinting logic applied automatically.

## Known failure modes

- Domain is unreachable or returns a non-200 response, leading to an inconclusive result
- Site uses bot-detection or blocks automated fetches, causing false negatives
- Fastly fingerprint may not be present on internal pages only exposed behind auth
- Paywalled or login-gated homepages may not expose CDN headers or scripts
- Network timeouts if the target domain is slow to respond

## How this service works

Does a website use Fastly? Fetches the page (homepage for a bare domain) and matches Fastly's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (CDN). 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 Fastly, along with an evidence snippet (the matching HTML content or response header value that triggered the fingerprint match) and the technology category label 'CDN'.

## 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-fastly-afa64502/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)