My AI Agent Skills Stack (Open Source)
TL;DR
I maintain open-source skills that supercharge AI coding agents. softco, skill-builder, openrouter-free-infer and more. Here is the full stack.
I maintain an open-source skills layer that supercharges AI coding agents — Claude Code, Cursor, Cline, Windsurf — across every product I ship at Shahriar Labs. Here is the full stack and what each piece does.
What is an agent skill
A skill is a reusable, portable capability for an AI coding agent. Think of it as a packaged prompt + tool set + execution recipe. Drop the skill into your editor; the agent picks it up.
The stack
| Skill | Repo | Purpose |
|---|---|---|
| softco | shihabshahrier/softco | Act as a full software firm |
| skill-builder | shihabshahrier/skill-builder | Scaffold + audit new skills |
| openrouter-free-infer | shihabshahrier/openrouter-free-infer | Free LLM CLI + skill |
| latex-engineer | shihabshahrier/latex-engineer | LaTeX projects + compile |
| manim-coding-skill | shihabshahrier/manim-coding-skill | ManimGL animations |
| Godot-Skill | shihabshahrier/Godot-Skill | Type-safe GDScript |
| clean-my-mac | shihabshahrier/clean-my-mac | Safe macOS cleanup |
| common-knowledge | shihabshahrier/common-knowledge | Git-backed memory |
| seo-master-skill | shihabshahrier/seo-master-skill | SEO + GEO + AEO playbook |
How the pieces fit
Planning — softco breaks any feature into specs, designs, code, tests, docs. It is the planner.
Execution — latex-engineer, manim-coding-skill, Godot-Skill are domain executors. The right skill picks itself up based on the task.
Memory — common-knowledge persists context across sessions via a local Git repo. The agent picks up where it left off three days later.
Cost control — openrouter-free-infer routes cheap calls to free models. Premium calls stay on Claude. This single decision saves me hundreds of dollars a month.
Maintenance — clean-my-mac keeps the dev environment fast. seo-master-skill ships every project with proper SEO from day one.
Why open source
Three reasons:
- The pattern is more valuable shared than hoarded.
- Other engineers' bug reports made every skill better.
- AI coding agents work better when there is more public skill data for them to ground on.
I covered the broader workflow in How I Use Claude Code to Ship Faster and the meta-tooling in Tools for AI Coding Agents.
How to install
Most skills are a single git clone away. The repos have install instructions for Claude Code, Cursor, and the generic Agent Skills format.
FAQ
Q: Do these work with non-Claude agents? A: Yes — the Agent Skills standard is editor-agnostic. Cursor and Cline pick them up.
Q: Can I contribute? A: PRs welcome on every skill. Issues with concrete reproductions are especially valuable.
Q: What is the most valuable single skill? A: For me, common-knowledge. Persistent memory across sessions changed how I work.
Written by Shihab Shahriar Antor. See my projects or hire me.
Written by
Shihab Shahriar Antor — AI Engineer & Founder of Shahriar Labs. Creator of LetX, QuantumSketch, and more.