tech-stack-teardown
Installation
SKILL.md
Tech Stack Recon
Reverse-engineer a company's sales, marketing, and outbound infrastructure from public signals. No login, no API access to their tools needed — everything is derived from DNS records, website source code, technology profiling, blacklist databases, and public complaints.
What It Detects
| Category | Tools Detected |
|---|---|
| CRM | HubSpot, Salesforce (via SPF, website pixels, DNS) |
| Cold Email Tools | Smartlead, Instantly, Outreach, Salesloft, Lemlist (via SPF, DKIM, TXT records, website source) |
| People Databases | Apollo, ZoomInfo, Clearbit, 6sense (via website tracker scripts) |
| Email Delivery | SendGrid, Amazon SES, Postmark, Mailgun, Mandrill (via SPF includes, DKIM selectors) |
| Email Marketing | Mailchimp, Brevo, ActiveCampaign, Klaviyo (via DKIM selectors) |
| Ad Retargeting | LinkedIn Insight Tag, Facebook Pixel, AdRoll, Reddit Ads, Twitter Ads (via Apify profiler + source) |
| Website Builder | Webflow, Framer, Next.js, WordPress (via Apify profiler + source) |
| Chat / Support | Intercom, Drift, Crisp, Zendesk (via website source) |
| Analytics | Google Analytics, Segment, Mixpanel, Amplitude, PostHog, Heap (via website source) |
| Outbound Domains | Separate cold sending domains (via SPF-only Google Workspace + redirect to primary) |
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