How finding a company's tech stack works
TheirStack finds a company's tech stack in its job posts, including the backend, data and internal tools a website scan cannot see, so you can look up any company by name or domain and read each technology next to the job posts it was found in.
Look
Look up each company by name or domain
TheirStack opens a company's profile from its name or domain, with its industry, size and open jobs on the same page.
- Company Lookup from the search bar
- Search by name or domain
- Firmographics next to the stack
This week's calls
Stripestripe.com, financial servicesTuesday
Klarnaklarna.com, financial servicesWednesday
Spotifyspotify.com, music streamingFridayRead
Read what it runs, front end to back office
TheirStack lists every technology it found in the company's job posts, with a confidence level and the dates it was first and last seen.
- Technologies found in job posts
- Backend tools a website scan misses
- First and last seen dates
StripeTerraform and Kubernetes in infrastructure roles · 1d agoHighKlarnadbt in analytics engineering roles · 3d agoHighSpotifyBackstage in one platform role · 12d agoMediumCheck
Check the job post behind each technology
TheirStack links every technology to the job posts it was found in, so you can read the exact line before you bring it up on the call.
- Open the job posts behind each tool
- Step by step lookup guide
- Send the stack to HubSpot, or export a CSV
Notes for the call
StripeInfrastructure Engineer post names TerraformInfra automationKlarnaAnalytics Engineer post names dbtData modellingSpotifyPlatform Engineer post names BackstageDeveloper portal活用方法を学ぶ
- ガイド
How to Discover Any Company's Tech Stack
Step-by-step guide to finding what technologies any company uses — from backend infrastructure to internal tools — using TheirStack's job-posting-based technographic data.
企業のテックスタックを調べる：AIアシスタント、自動化、CRMとの連携
TheirStackは、すでにご利用中のAIアシスタント、自動化ツール、CRMと連携します。MCPサーバー経由でClaudeやChatGPTに問い合わせたり、Webhookで新しい一致をClay、n8n、Make、Zapierに送信したり、SalesforceやHubSpotにリードを作成したりできます。
AIアシスタント
Claude、ChatGPT、Cursor、または任意のMCPクライアントに、TheirStackのMCPサーバー経由で求人情報、企業、テックスタックを検索させることができます。
MCPサーバー
https://api.theirstack.com/mcp自動化
TheirStackは、条件に一致する新しい企業を見つけ次第、Webhookで自動化プラットフォームへ送信し、そこからCRMや営業ツールへ連携します。
このユースケースを自分のコードから実行する
curl -X POST https://api.theirstack.com/v1/companies/search \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "company_domain_or": ["stripe.com"] }'
Claude
ChatGPT
Cursor
VS Code
Windsurf
Cline
OpenCode
Gemini
Hermes
OpenClaw
Clay
n8n
Make
Zapier
Databar
Salesforce
HubSpot
Attio
Pipedrive
Apollo
Instantly
ContactOut商談の前に、企業が何を使っているかを確認。
Webサイトのスキャンでは見えないバックエンドツールも含め、あらゆる企業のテクノロジーを調べられます。
無料で始める：200以上の無料クレジット付き。