Skilldeck – Desktop app to manage AI agent skill files across tools

Name: Skilldeck – Desktop app to manage AI agent skill files across tools
Availability: InStock
Author: alierfan

by alierfan·Apr 10, 2026·1 point·0 comments

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AI Analysis

●●●BangerSolve My ProblemBig Brain

Drift detection across 10 AI tool formats solves real fragmentation pain.

Strengths

•Ten built-in target profiles deploy skills to correct format automatically.
•Bidirectional sync promotes project improvements back to central library.
•Built by Claude Code with Playwright E2E tests and regression gates.

Weaknesses

•AI tool landscape shifts fast; profiles need constant maintenance.
•Symlink mode may break on Windows without admin privileges.

Post Description

Skill files (.claude/skills/, .cursor/rules/*.mdc, AGENTS.md, .windsurfrules) are becoming a core part of AI-assisted development workflows. The problem: they scatter across projects, diverge silently, and every new repo means rebuilding behavioral config from scratch. Each tool uses a different format and location.

Skilldeck keeps one local library and deploys to any tool in the correct format automatically. Ten built-in target profiles cover Claude Code, Cursor, Copilot, Windsurf, Codex, and more. Drift detection shows when a deployed skill has fallen out of sync with the library version. Bidirectional sync lets you pull improvements back from a project into the library.

The interesting part technically: the entire app was built by Claude Code using a harness engineering methodology — a ground truth JSON file, Playwright E2E verification tests, a regression gate based on a surfaces map, and a feature intake protocol. 31 features across multiple autonomous sessions with no manual application code. I wrote two articles about the harness approach if that side is interesting.

No cloud, no backend, local filesystem only. Windows/macOS/Linux. Open source.

github.com/ali-erfan-dev/skilldeck

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