# Citiview Tech Stack Detection

> Citiview Tech Stack Detection is a paid API for AI agents from agents.citiviewgroup.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-14).

Detects what technologies a website is built with, including CMS, frameworks, e-commerce platforms, analytics, ads, chat, payments, CDN, hosting, and server software, with evidence for each finding.

## Facts

- Endpoint: GET https://agents.citiviewgroup.com/v1/techstack?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/citiview-tech-stack-detection-7ecd55b8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JbRuzmAn3war-_kKL0ZLO

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 citiview-tech-stack-detection-7ecd55b8
```

Example prompt: What tech stack is stripe.com built on? I want to know the CMS, frameworks, payment tools, CDN, and hosting provider with the evidence for each.

## When to prefer this

Choose this endpoint when you need structured, categorized technology fingerprinting of a website with evidence, especially when you need coverage across multiple tech categories (CMS, CDN, payments, analytics) in a single call. Prefer it over generic web scraping when the goal is technology identification rather than content extraction, and over manual inspection when you need fast, automated results at low cost ($0.005/call).

## Known failure modes

- Invalid or unreachable URL returns an error or empty result
- Private or localhost domains cannot be inspected
- Some technologies may be obfuscated or minified and go undetected
- Rate limiting or bot-blocking on the target site may prevent evidence collection
- Very new or highly custom stacks may yield no recognized technology matches

## How this service works

Tech stack detection: what a website is built with (CMS, frameworks, e-commerce, analytics, ads, chat, payments, CDN, hosting, server) with the evidence for each.

## Output

A structured breakdown of the technologies detected on the target website, organized by category (CMS, frameworks, e-commerce, analytics, ads, chat, payments, CDN, hosting, server), each accompanied by evidence such as HTTP headers, script patterns, or HTML signatures that confirm the detection.

## 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",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "URL or domain"
      }
     }
    }
   },
   "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/citiview-tech-stack-detection-7ecd55b8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.citiviewgroup.com](https://www.zero.xyz/host/agents.citiviewgroup.com/llms.txt)