{ "openapi": "3.1.0", "info": { "title": "Tech Stack API", "version": "1.0.0", "description": "Detect the CMS, frameworks, analytics, payments, CDN and hosting behind any website.\n\nDetect what any website is built with, in one call: CMS, e-commerce platform, analytics and tag managers, payment providers, JavaScript frameworks and meta-frameworks, server-side language and framework, web server, CDN, hosting platform, marketing and CRM tools, live-chat, A/B testing, search, maps, video, fonts and anti-bot services — matched against a curated, self-maintained fingerprint ruleset of 108 technologies. Each lookup performs one live fetch of the target page and matches static evidence only: response headers, cookie names, script and stylesheet URLs, meta tags and anchored HTML markers. Every detection returns the exact evidence that matched (the header, cookie, script URL or marker) and a confidence level — detected from direct evidence, or implied from a certain relationship, such as WooCommerce implying WordPress and Next.js implying React — with framework versions captured where the site exposes them. Scan one site, or up to 10 concurrently in a batch with per-target errors reported inline; list the full detectable catalogue so you know exactly what a scan can and cannot find. Ideal for sales prospecting and lead enrichment (what does this prospect run?), competitor analysis, migration planning and market-share research. Non-public targets are refused, and the ruleset is this provider's own — no third-party detection service behind it.", "contact": { "name": "Data and APIs", "url": "https://dataandapis.com/contact" }, "termsOfService": "https://dataandapis.com/terms-of-service", "license": { "name": "Data and APIs Terms of Service", "url": "https://dataandapis.com/terms-of-service" }, "x-logo": { "url": "https://dataandapis.com/images/tech-stack.webp" } }, "externalDocs": { "description": "Documentation, live tester and pricing", "url": "https://dataandapis.com/apis/tech-stack" }, "servers": [ { "url": "https://api-tech-stack.dataandapis.com" } ], "tags": [ { "name": "Tools", "description": "Tech Stack API belongs to the Tools category of the Data and APIs catalog." } ], "paths": { "/v1/stack/{target}": { "get": { "operationId": "detectStack", "summary": "Detect Stack", "description": "Detect Stack endpoint of the Tech Stack API. Costs 10 tokens per call.", "externalDocs": { "url": "https://dataandapis.com/apis/tech-stack/detect-stack" }, "parameters": [ { "name": "target", "in": "path", "required": true, "schema": { "type": "string" }, "example": "www.allbirds.com" }, { "name": "url", "in": "query", "required": false, "schema": { "type": "string" }, "example": "https://www.allbirds.com/products" } ], "responses": { "200": { "description": "Successful response", "content": { "application/json": { "schema": { "type": "object" }, "example": { "ok": true, "url": "https://www.allbirds.com/", "final_url": "https://www.allbirds.com/", "status": 200, "technologies": [ { "name": "Cloudflare", "category": "CDN", "version": null, "confidence": "detected", "evidence": [ "header cf-ray: a3b7cd7f3c26d305-BOG" ] }, { "name": "Shopify", "category": "E-commerce", "version": null, "confidence": "detected", "evidence": [ "script https://cdn.shopify.com/s/files/1/1104/4168/files/jsEncrypt.js?v=1756910700", "html marker /Shopify\\.theme/" ] }, { "name": "Shop Pay", "category": "Payments", "version": null, "confidence": "detected", "evidence": [ "script https://shop.app/checkouts/internal/preloads.js?locale=en-US&default_configuration_id=2737373264&sho" ] }, { "name": "Google Tag Manager", "category": "Tag manager", "version": null, "confidence": "detected", "evidence": [ "html marker /googletagmanager\\.com/ns\\.html/" ] } ], "by_category": { "CDN": [ "Cloudflare" ], "E-commerce": [ "Shopify" ], "Payments": [ "Shop Pay" ], "Tag manager": [ "Google Tag Manager" ] }, "fetched_at": "2026-09-15T12:58:24.776Z" } } } }, "401": { "description": "Missing or invalid API key" }, "402": { "description": "Subscription past due; the response carries a payment_url" }, "429": { "description": "Monthly token allowance exhausted" } }, "security": [ { "ApiKey": [] } ] } }, "/v1/stack": { "post": { "operationId": "detectStackBatch", "summary": "Detect Stack Batch", "description": "Detect Stack Batch endpoint of the Tech Stack API. Costs 10 tokens per call.", "externalDocs": { "url": "https://dataandapis.com/apis/tech-stack/detect-stack-batch" }, "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object" }, "example": { "targets": [ "stripe.com", "www.allbirds.com", "wordpress.org" ] } } } }, "responses": { "200": { "description": "Successful response", "content": { "application/json": { "schema": { "type": "object" }, "example": { "ok": true, "count": 2, "results": [ { "url": "https://wordpress.org/", "final_url": "https://wordpress.org/", "status": 200, "technologies": [ { "name": "WordPress", "category": "CMS", "version": "7.2", "confidence": "detected", "evidence": [ "meta generator: WordPress 7.2-alpha-63620", "script https://wordpress.org/wp-content/mu-plugins/pub-sync/blocks/language-suggest/build/front.js?ver=415c", "link https://wordpress.org/wp-content/mu-plugins/pub-sync/global-fonts/Inter/Inter-latin.woff2" ] }, { "name": "Google Fonts", "category": "Fonts", "version": null, "confidence": "detected", "evidence": [ "link https://fonts.googleapis.com" ] }, { "name": "Google Tag Manager", "category": "Tag manager", "version": null, "confidence": "detected", "evidence": [ "html marker /googletagmanager\\.com/ns\\.html/" ] }, { "name": "nginx", "category": "Web server", "version": null, "confidence": "detected", "evidence": [ "header server: nginx" ] } ], "by_category": { "CMS": [ "WordPress" ], "Fonts": [ "Google Fonts" ], "Tag manager": [ "Google Tag Manager" ], "Web server": [ "nginx" ] }, "fetched_at": "2026-09-15T12:58:26.429Z" }, { "target": "localhost", "error": "Target must be a public website." } ] } } } }, "401": { "description": "Missing or invalid API key" }, "402": { "description": "Subscription past due; the response carries a payment_url" }, "429": { "description": "Monthly token allowance exhausted" } }, "security": [ { "ApiKey": [] } ] } }, "/v1/technologies": { "get": { "operationId": "technologyCatalogue", "summary": "Technology Catalogue", "description": "Technology Catalogue endpoint of the Tech Stack API. Costs 10 tokens per call.", "externalDocs": { "url": "https://dataandapis.com/apis/tech-stack/technology-catalogue" }, "responses": { "200": { "description": "Successful response", "content": { "application/json": { "schema": { "type": "object" }, "example": { "ok": true, "count": 108, "technologies": [ { "name": "Optimizely", "category": "A/B testing", "rules": 1 }, { "name": "VWO", "category": "A/B testing", "rules": 1 }, { "name": "Adobe Analytics", "category": "Analytics", "rules": 1 }, { "name": "Amplitude", "category": "Analytics", "rules": 1 }, { "name": "Cloudflare Web Analytics", "category": "Analytics", "rules": 1 }, { "name": "Fathom", "category": "Analytics", "rules": 1 } ] } } } }, "401": { "description": "Missing or invalid API key" }, "402": { "description": "Subscription past due; the response carries a payment_url" }, "429": { "description": "Monthly token allowance exhausted" } }, "security": [ { "ApiKey": [] } ] } } }, "components": { "securitySchemes": { "ApiKey": { "type": "apiKey", "in": "header", "name": "X-Api-Key", "description": "Create a free key at https://dataandapis.com/sign-up. 500 tokens a month on the Free plan; this API costs 10 tokens per call." } } }, "security": [ { "ApiKey": [] } ] }