Configuring Horizon
coollabsio/coolify
A skill your agent uses whenever the user mentions Horizon by name in a Laravel context.
Guidance for building CompCert, a formally verified C compiler.
No licenceAuto-check passed
Install Compile Compcert
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcert --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/compile-compcert .claude/skills/compile-compcert && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .claude/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcertType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcert --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/compile-compcert .agents/skills/compile-compcert && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .agents/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcert --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/compile-compcert .cursor/skills/compile-compcert && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .cursor/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/lazyFrogLOL/Harness_Engineering.git --path skills/compile-compcert--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcert --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/compile-compcert .gemini/skills/compile-compcert && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .gemini/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcertInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/compile-compcert .github/skills/compile-compcert && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .github/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install lazyFrogLOL/Harness_Engineering compile-compcert --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lazyFrogLOL/Harness_Engineering.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/compile-compcert .opencode/skills/compile-compcert && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "compile-compcert" agent skill from https://github.com/lazyFrogLOL/Harness_Engineering/tree/master/skills/compile-compcert into .opencode/skills/compile-compcert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "compile-compcert", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
compile-compcert- GitHub stars
- 128
- Token cost
- ~1.2k tokens
- SKILL.md length
- 571 words
- Files
- 1
- Skills in repo
- 32
- Repo updated
- First seen
- Licence
- None found
At a glance
Guidance for building CompCert, a formally verified C compiler.
- Works in 3 steps: Obtain Source First → Check Version Requirements → Verify System Compatibility
- CompCert compilation
- SKILL.md covers Overview, Critical Pre-Build Analysis, Dependency Installation Approach and Build Process, plus 3 more sections
- Calls make
What it does
Compile Compcert is an agent skill from lazyFrogLOL/Harness_Engineering. Guidance for building CompCert, a formally verified C compiler. This skill applies when tasks involve compiling CompCert from source, setting up Coq/OCaml environments with opam, or building software with strict proof assistant dependencies. Use for CompCert compilation, Coq-dependent project builds, or formal verification toolchain setup.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with Linux.
When your agent uses it
- CompCert compilation
- Coq-dependent project builds
- Formal verification toolchain setup
Example prompts
- “/compile-compcert”
Workflow steps
3 steps, taken from the step headings in SKILL.md.
- Obtain Source First
- Check Version Requirements
- Verify System Compatibility
What it can do on your machine
Read from SKILL.md and the folder at commit cae3b25. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
make
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Compile Compcert loads about 1.2k tokens when it runs. Until then it costs about 90 tokens; SKILL.md has 571 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 571 words (~1,214 tokens).
“CompCert is a formally verified optimizing C compiler. Building it requires careful coordination of Coq (proof assistant), OCaml, and Menhir (parser generator) versions. The primary challenge is ensuring version compatibility across all dependencies before beginning compilation.”
- name
- compile-compcert
Files
Just SKILL.md in skills/compile-compcert of lazyFrogLOL/Harness_Engineering.
Open the folder on GitHubat commit cae3b25
Compare with similar skills
Compile Compcert next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Compile Compcert this skilllazyFrogLOL/Harness_Engineering | 128 | — | ~1.2k | Automated safety check: Pass | None | |
| Configuring Horizoncoollabsio/coolify | 63k | 4 repos | ~898 | Automated safety check: Pass | MIT | |
| Model Usageopenclaw/openclaw | 392k | 1 repos | ~637 | Automated safety check: Pass | MIT | |
| Engine Whats Newflutter/flutter | 179k | — | ~978 | Automated safety check: Pass | BSD-3-Clause | |
| Openclaw Live Updateropenclaw/openclaw | 392k | — | ~3.7k | Automated safety check: Pass | MIT | |
| Upgrade Browserflutter/flutter | 179k | — | ~1.1k | Automated safety check: Pass | BSD-3-Clause |
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Works with
Questions about Compile Compcert
What does Compile Compcert do?
Guidance for building CompCert, a formally verified C compiler. Compile Compcert is an agent skill from lazyFrogLOL/Harness_Engineering. Guidance for building CompCert, a formally verified C compiler.
When should I use Compile Compcert?
Compile Compcert fits situations like: compCert compilation; coq-dependent project builds; formal verification toolchain setup.
How do I install Compile Compcert in Claude Code?
Run `npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a claude-code`. Or copy the skill folder (skills/compile-compcert in lazyFrogLOL/Harness_Engineering) into .claude/skills/compile-compcert in your project. Claude Code loads it when a task matches its description.
How do I install Compile Compcert in Codex?
Run `npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a codex`. Or copy the skill folder (skills/compile-compcert in lazyFrogLOL/Harness_Engineering) into .agents/skills/compile-compcert in your project. Codex loads it when a task matches its description.
Can I use Compile Compcert in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add lazyFrogLOL/Harness_Engineering --skill compile-compcert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/compile-compcert, .gemini/skills/compile-compcert, .github/skills/compile-compcert and .opencode/skills/compile-compcert in your project.
What does Compile Compcert need to run?
Going by SKILL.md and its folder, Compile Compcert needs the command-line tools its instructions call (make).
Does Compile Compcert access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Compile Compcert safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Compile Compcert use?
No licence was found for Compile Compcert or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Compile Compcert use?
About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Compile Compcert?
Skills that share tags, products or a category with Compile Compcert: Configuring Horizon (coollabsio/coolify, 63k stars), Model Usage (openclaw/openclaw, 392k stars), Engine Whats New (flutter/flutter, 179k stars) and Openclaw Live Updater (openclaw/openclaw, 392k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Compile Compcert?
lazyFrogLOL (a GitHub user) maintains it in lazyFrogLOL/Harness_Engineering, which has 128 GitHub stars. The repository holds 32 skills in this directory. The repository was last updated on May 18, 2026.
Source: lazyFrogLOL/Harness_Engineering on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.