Focused agent skills for AI coding assistants.
One skill, one repeatable task. Cleaner commits, safer repos, stronger PRs and handoffs. Useful automation without the theatrical complexity.
Not a sprawling assistant. A sharp tool.
An agent skill is a small SKILL.md package that teaches your AI coding assistant one task. Each JustHandled Labs skill does a single job you can name: generate the commit message, catch the row-level-security hole, write the handoff before the context runs out. No vague "productivity," no kitchen-sink agent that does everything a little. Just the specific workflows that are easier to run, review, and repeat.
A few of the skills
Browse 70+ skills on Agensi →README Generator
FreeGenerates a README from your actual repo, not a hallucinated guess. Reads your manifests for real install steps and dependencies across Node, Python, Go, Rust, and Java.
Env Doctor
FreeFixes the "it works on my machine" problem before you touch the code. Diagnoses local setup failures across Node, Python, Go, and Docker, then hands you copy-paste fixes.
GuardrailDoctor
$29Penetration-tests your coding agent's guardrails before you deploy. Throws prompt-injection, shell-chaining, and path-traversal at your hooks, then reports pass or fail with fixes.
HandoffPilot
$19Saves a coding agent's working state before it hits the context limit, then resumes in a fresh session without re-explaining everything. Plan, branch, decisions, blockers, next steps.
Supabase RLS Doctor
$19Audits Supabase for the row-level-security mistakes that quietly expose data: tables without RLS, policies that resolve to true, leaked keys. Each finding with severity, evidence, and a fix.
VoiceLock
$9Humanizes AI writing without changing the facts. Strips the tells and rewrites flat prose into something concrete, then builds a reusable voice profile so future drafts sound like you.
Who builds these
JustHandled Labs is built by H.J. Westerfield, with a background in communications, editing, project coordination, and practical AI systems. The catalog spans developer workflow, repo safety, documentation, and writing. The goal is tools for people who want useful automation without theatrical complexity.
Questions
What is an agent skill?
A small package of instructions and scripts, written to the open SKILL.md standard, that teaches an AI coding assistant how to do one specific task. You add it once, and the assistant uses it when the work matches.
Which assistants do these work with?
Anything that reads SKILL.md, including Claude Code, Codex, and Cursor. The format is open, so the skills are not locked to a single tool or vendor.
Are they safe to run on my repo?
The scanning skills are read-only by default and preview every change before writing. Nothing touches your files or your database without your confirmation.
How do I install one?
Browse the catalog on Agensi, get the skill, and drop it into your assistant's skills folder. Each listing includes setup steps and what it reads.