Kolo
Kolo is a text-based Python debugger that captures every executed function, return value, local variable, HTTP request, and SQL query into greppable trace files. Use this skill for tricky debugging challenges, to verify that code behaves as expected at runtime, and to see the real data and values passing through the code. Use it to see the real data returned by sql queries or the real http data sent and received. Use it when the user reports something is not working, but you're not sure why - even if the user doesn't explicitly mention "kolo" or "debugging".
What this skill does
Kolo is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/kolo/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Kolo Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 118,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/kolo
curl -L https://claudskills.com/skills/kolo/SKILL.md \
-o ~/.claude/skills/kolo/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/kolo/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/kolo/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\kolo\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Kolo Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/kolo/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Kolo skill do?
Kolo is a text-based Python debugger that captures every executed function, return value, local variable, HTTP request, and SQL query into greppable trace files. Use this skill for tricky debugging challenges, to verify that code behaves as expected at runtime, and to see the real data and values passing through the code. Use it to see the real data returned by sql queries or the real http data sent and received. Use it when the user reports something is not working, but you're not sure why - even if the user doesn't explicitly mention "kolo" or "debugging".
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Kolo skill?
Use Kolo when your Claude Code task falls under the Engineering category — specifically in the engineering misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Kolo" or describe the task and let Claude pick). Browse related skills at
/category/engineering/.
What is a Claude Code skill and how does the Kolo skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Kolo is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
koloai. (2026). Kolo [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/kolo/
BibTeX
@misc{kolo-2026,
author = {koloai},
title = {Kolo [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/kolo/}
}Embed this skill
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