# StackDetect by AgentGate > StackDetect by AgentGate is a paid API for AI agents from api.youraitools.co, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-26). Detects the full technology stack of any public website — CMS, frameworks, CDN, analytics, email provider, DNS host, and more — from a single page load plus public DNS signals. ## Facts - Endpoint: GET https://api.youraitools.co/stackdetect/v1/detect?utm_source=zero.xyz - Price: $0.003/call - Payment: x402 - Status: unknown - Last checked: 2026-10-26 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/stackdetect-by-agentgate-138d2688 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ftyfjK3Uo26QTpIKphQu0 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 stackdetect-by-agentgate-138d2688 ``` Example prompt: What technology stack is shopify.com using? I want to know their CMS, CDN, JS framework, email provider, and any analytics or payment tools you can detect. ## When to prefer this Use StackDetect when you need a fast, comprehensive, single-call technology fingerprint of any public website — especially when you need DNS-based SaaS verification (MX/NS/TXT), email provider detection, and CDN/hosting identification alongside front-end stack signals. Prefer this over browser-based tools when you want structured JSON output with per-technology confidence scores and evidence. At $0.003/call it is cost-effective for bulk enrichment pipelines. ## Known failure modes - Invalid or unreachable URL returns an error or empty technology list - Private/intranet URLs cannot be crawled and will fail - Some technologies may not be detected if obfuscated or served behind heavy WAFs - Version information is often null when not publicly exposed - Low-confidence detections (below threshold) may produce false positives - Domains with unusual DNS configurations may yield incomplete email/SaaS detection ## How this service works Website technology lookup API (tech stack detector). Detects the technology stack of any public website from one page load plus public DNS: CMS, ecommerce platform, JS framework, web server, CDN/hosting, analytics, ad pixels, chat, payments, consent, plus email provider, email-sending services, DNS host and verified SaaS (MX/NS/TXT). Each hit has categories, version when exposed, confidence 0-100 and evidence. 266 signatures. ## Output A JSON object containing: the final resolved URL, HTTP status, page title, and a list of detected technologies each with name, categories (e.g. cdn, cms, analytics), version if exposed, confidence score (0–100), and evidence snippets (header, cookie, MX record, etc.). Also includes rolled-up provider summaries by category (dns, email, hosting, verified_saas, email_delivery) and a technology count. 266 signatures are checked across CMS, ecommerce, JS frameworks, web servers, CDNs, analytics, ad pixels, chat, payments, consent, email, and DNS-based SaaS verification. ## Request schema (JSON Schema) ```json { "type": "object", "$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": "Absolute http(s) URL or a bare domain, e.g. https://laravel.com or shopify.com" } }, "description": "Search intents: tech stack detector, website technology lookup, what cms is this site, builtwith alternative, wappalyzer api, website analytics detection" } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "properties": { "url": { "type": "string" }, "tier": { "type": "string" }, "title": { "type": "string" }, "engine": { "type": "string" }, "final_url": { "type": "string" }, "providers": { "type": "object" }, "categories": { "type": "object" }, "disclaimer": { "type": "string" }, "http_status": { "type": "number" }, "content_type": { "type": "string" }, "technologies": { "type": "array" }, "technology_count": { "type": "number" } } } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "url": "https://laravel.com/", "tier": "full", "title": "Laravel - The PHP Framework For Web Artisans", "engine": "stackdetect-0.1", "final_url": "https://laravel.com/", "providers": { "dns": [ "Cloudflare DNS" ], "email": [ "Google Workspace" ], "hosting": [ "Cloudflare" ], "verified_saas": [], "email_delivery": [] }, "categories": { "cdn": [ "Cloudflare" ], "waf": [ "Cloudflare" ], "web-framework": [ "Laravel" ], "email-provider": [ "Google Workspace" ] }, "disclaimer": "Informational: technologies inferred from public signals of one page load and public DNS.", "http_status": 200, "content_type": "text/html", "technologies": [ { "name": "Cloudflare", "version": null, "evidence": [ { "type": "header", "value": "server: cloudflare" } ], "categories": [ "cdn", "waf" ], "confidence": 100 }, { "name": "Laravel", "version": null, "evidence": [ { "type": "cookie", "value": "laravel_session" } ], "categories": [ "web-framework" ], "confidence": 85 }, { "name": "Google Workspace", "version": null, "evidence": [ { "type": "mx", "value": "aspmx.l.google.com" } ], "categories": [ "email-provider" ], "confidence": 95 } ], "technology_count": 3 } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stackdetect-by-agentgate-138d2688/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.youraitools.co](https://www.zero.xyz/host/api.youraitools.co/llms.txt)