OpenClacky is an open-source AI coding agent that uses OpenAI-compatible models to perform tasks through tools and subagents. It is intended for developers who want an agent with flexible model choice and lower token usage. The catalogue skills and agents extend its workflows and capabilities.
Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/clacky-ai/openclacky/skill-add)<a href="https://agentmods.dev/skills/clacky-ai/openclacky/skill-add"><img src="https://agentmods.dev/badge/skills/clacky-ai/openclacky/skill-add/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/clacky-ai/openclacky/skill-add"><img src="https://agentmods.dev/badge/skills/clacky-ai/openclacky/skill-add.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00089 | $0.00586 |
| Opus 5 | $0.00044 | $0.00293 |
| Sonnet 5 | $0.00018 | $0.00117 |
| Haiku 4.5 | $0.00009 | $0.00059 |
Grade A, and why
skill-add scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Skill Add — Zip Installer
Installs a skill from a zip URL or a local zip file path using the bundled install_from_zip.rb script.
How to Install
The script path is listed in the Supporting Files above (scripts/install_from_zip.rb) — use the full path directly, no find needed.
The script accepts either a remote URL or a local file path:
ruby "SKILL_DIR/scripts/install_from_zip.rb" <zip_url_or_path> [slug]
<zip_url_or_path>— a remotehttps://URL or an absolute/relative local path to a.zipfile[slug]— optional; the skill's directory name. If omitted, inferred from the filename (e.g.canvas-design-1.2.0.zip→canvas-design)
The script handles everything automatically:
- For URLs: downloads the zip (follows HTTP redirects)
- For local paths: reads the file directly (no download needed)
- Extracts and locates all
SKILL.mdfiles inside - Copies skill directories to
~/.clacky/skills/ - Reports installed skills with their descriptions
Do NOT manually download or unzip — the script handles everything.
Examples
From a remote URL:
/skill-add https://store.clacky.ai/skills/canvas-design-1.2.0.zip
ruby "SKILL_DIR/scripts/install_from_zip.rb" \
"https://store.clacky.ai/skills/canvas-design-1.2.0.zip" \
"canvas-design"
From a local file:
/skill-add /Users/alice/Downloads/my-skill-1.0.0.zip
ruby "SKILL_DIR/scripts/install_from_zip.rb" \
"/Users/alice/Downloads/my-skill-1.0.0.zip"
Notes
- Skills install to
~/.clacky/skills/by default - Local paths may be absolute (
/path/to/skill.zip) or use~(~/Downloads/skill.zip) - If the user doesn't provide a URL or path, ask them for the zip source
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 60 lines · 89 tokens per session scan A 8a573bfbc29c
skill-add is a skill published in the GitHub repository clacky-ai/openclacky (1,187 stars, last pushed today), licensed MIT. It adds 89 tokens to every session and 586 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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