# agentsvc.io Tech Stack Detector

> agentsvc.io Tech Stack Detector is a paid API for AI agents from agentsvc.io, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-10).

Detects and identifies technologies, frameworks, CMS platforms, and web stack components used by any given website URL via static HTML/header analysis.

## Facts

- Endpoint: POST https://agentsvc.io/api/v1/proxy/tech-stack?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentsvc-io-tech-stack-detector-3076eace
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_khED5usbWeeCfcwuCQbqu

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 agentsvc-io-tech-stack-detector-3076eace -d '<json body>'
```

Example prompt: Can you detect what tech stack shopify.com is running — tell me the CMS, server software, and any notable frameworks or plugins, with at least 70% confidence?

## When to prefer this

Choose this endpoint when you need fast, inexpensive technology fingerprinting of a public website without running a full browser. It is ideal for bulk competitive research, lead enrichment pipelines, and pre-audit reconnaissance where static analysis (HTML, headers, cookies, meta tags, script URLs) is sufficient. Prefer alternatives if you need JavaScript-rendered SPA detection or deep dynamic analysis.

## Known failure modes

- URL is unreachable or returns non-200 status — partial or empty technology list returned
- Client-side JavaScript-rendered technologies are not detected due to static analysis only
- Very low confidence results filtered out if min_confidence is set too high
- Private or behind-auth sites may return minimal technology signals
- Invalid URL format causes request to fail

## How this service works

86 APIs for AI agents: web scraping and crawling to Markdown, AI summaries, data extraction and cited answers, screenshots and PDF, PDF, OCR and document conversion, news, paper and developer search and more, paid per call with USDC on Base, Solana, Polygon or Arbitrum via x402. No account, no API key, free sample on every service.

## Output

Returns a JSON object containing the detected technologies grouped by category (e.g. CMS, Web servers, Programming languages, Security), each with name, version (if detectable), confidence score, evidence snippets, and website link. Also includes server software, HTTP status, total technology count, and a timestamp of when the check was performed. Includes a note clarifying that client-side-only JavaScript technologies may be missed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string"
  },
  "min_confidence": {
   "type": "integer",
   "default": 50,
   "maximum": 100,
   "minimum": 0
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "url": "https://wordpress.org/",
   "note": "Static analysis of HTML, headers, cookies, meta tags and script URLs; technol...",
   "server": "nginx",
   "status": 200,
   "checked_at": "2026-10-06T14:33:42.336Z",
   "signatures": {
    "source": "webappanalyzer (GPL-3.0)",
    "technologies": 7628
   },
   "by_category": {
    "CMS": [
     "WordPress"
    ],
    "Blogs": [
     "WordPress"
    ],
    "Editors": [
     "Gutenberg"
    ],
    "Security": [
     "HSTS"
    ],
    "Databases": [
     "MySQL"
    ],
    "Web servers": [
     "Nginx"
    ],
    "Tag managers": [
     "Google Tag Manager"
    ],
    "Page builders": [
     "WordPress Block Editor"
    ],
    "Reverse proxies": [
     "Nginx"
    ],
    "WordPress plugins": [
     "Gutenberg"
    ],
    "Programming languages": [
     "PHP"
    ]
   },
   "technologies": [
    {
     "name": "Google Tag Manager",
     "version": null,
     "website": "https://www.google.com/tagmanager",
     "evidence": [
      "html"
     ],
     "categories": [
      "Tag managers"
     ],
     "confidence": 100
    }
   ],
   "technology_count": 9
  },
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentsvc-io-tech-stack-detector-3076eace/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentsvc.io](https://www.zero.xyz/host/agentsvc.io/llms.txt)