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techstack-backend

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Backend tech-stack identification — web servers, runtimes, languages, frameworks, databases, APIs, and CMS via HTTP headers, cookies, error pages, and API discovery.

skills/techstack-identification/backend/SKILL.md

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Jul 29, 2026
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# Backend Tech-Stack Identification

## Scope

Identify server-side technologies: web servers (nginx, Apache, IIS), runtimes (Node, Python, PHP, Ruby, Java, .NET), backend frameworks (Express, Django, Flask, Rails, Laravel, Spring, ASP.NET), databases (Postgres, MySQL, Mongo, Redis), CMS (WordPress, Drupal, Magento), and API surfaces (REST, GraphQL, OpenAPI).

## Signals (input)

- HTTP response headers — `Server`, `X-Powered-By`, `X-AspNet-Version`, `X-Drupal-*`, `X-Generator`, etc.
- Cookies — session-name fingerprints (`PHPSESSID`, `JSESSIONID`, `_rails_session`, ...)
- Error page bodies (404, 500)
- Path patterns hinting CMS (`/wp-admin/`, `/sites/default/`)
- API subdomains and OpenAPI/Swagger/GraphQL endpoints
- `robots.txt` directives
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