Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
A skill your agent uses when writing new or large Common Lisp code where subtle library or language gotchas are likely — event-emitter argument order, parenthesis imbalance in a big file, or a…
Install Avoiding Common Lisp Pitfalls
$ npx skills add ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ultralisp/ultralisp avoiding-common-lisp-pitfalls --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/ultralisp/ultralisp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .claude/skills/avoiding-common-lisp-pitfalls && 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 "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .claude/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfallsType 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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ultralisp/ultralisp avoiding-common-lisp-pitfalls --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ultralisp/ultralisp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .agents/skills/avoiding-common-lisp-pitfalls && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .agents/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ultralisp/ultralisp avoiding-common-lisp-pitfalls --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ultralisp/ultralisp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .cursor/skills/avoiding-common-lisp-pitfalls && 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 "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .cursor/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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/ultralisp/ultralisp.git --path .agents/skills/avoiding-common-lisp-pitfalls--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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ultralisp/ultralisp avoiding-common-lisp-pitfalls --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ultralisp/ultralisp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .gemini/skills/avoiding-common-lisp-pitfalls && 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 "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .gemini/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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 ultralisp/ultralisp avoiding-common-lisp-pitfallsInstalls 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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ultralisp/ultralisp.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .github/skills/avoiding-common-lisp-pitfalls && 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 "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .github/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ultralisp/ultralisp avoiding-common-lisp-pitfalls --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ultralisp/ultralisp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/avoiding-common-lisp-pitfalls .opencode/skills/avoiding-common-lisp-pitfalls && 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 "avoiding-common-lisp-pitfalls" agent skill from https://github.com/ultralisp/ultralisp/tree/master/.agents/skills/avoiding-common-lisp-pitfalls into .opencode/skills/avoiding-common-lisp-pitfalls/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "avoiding-common-lisp-pitfalls", 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
avoiding-common-lisp-pitfalls- GitHub stars
- 258
- Token cost
- ~1.3k tokens
- SKILL.md length
- 484 words
- Files
- 2
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when writing new or large Common Lisp code where subtle library or language gotchas are likely — event-emitter argument order, parenthesis imbalance in a big file, or a…
- Large Common Lisp code where subtle library
- SKILL.md covers Overview, When to Use, event-emitter has INCONSISTENT… and Silent CLOS method replacement, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Language gotchas are likely — event-emitter argument order
What it does
Avoiding Common Lisp Pitfalls is an agent skill from ultralisp/ultralisp. Use when writing new or large Common Lisp code where subtle library or language gotchas are likely — event-emitter argument order, parenthesis imbalance in a big file, or a defmethod whose specializers may silently collide with one in a dependency. Also apply when wiring defmain subcommands.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
It sits in Development. The repository describes itself as: The software behind a Ultralisp.org Common Lisp repository.
When your agent uses it
- Large Common Lisp code where subtle library
- Language gotchas are likely — event-emitter argument order
- Parenthesis imbalance in a big file
- A defmethod whose specializers may silently collide with one in a dependency
Example prompts
- “/avoiding-common-lisp-pitfalls”
What it can do on your machine
Read from SKILL.md and the folder at commit 3439788. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are lisp).
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
Avoiding Common Lisp Pitfalls loads about 1.3k tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 484 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 484 words (~1,309 tokens).
“Verified, non-obvious CL traps: the event-emitter library's inconsistent argument order, silent CLOS method replacement, parenthesis imbalance in large files, and defmain subcommand quirks.”
- name
- avoiding-common-lisp-pitfalls
Files
SKILL.md and 1 other file in .agents/skills/avoiding-common-lisp-pitfalls of ultralisp/ultralisp.
- SKILL.md
- check-paren-balance.lisp
Open the folder on GitHubat commit 3439788
Compare with similar skills
Avoiding Common Lisp Pitfalls 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 |
|---|---|---|---|---|---|---|
| Avoiding Common Lisp Pitfalls this skillultralisp/ultralisp | 258 | — | ~1.3k | Automated safety check: Pass | None | |
| Vercel Composition Patternssupabase/supabase | 111k | 59 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 296k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| PR Babysitteropeninterpreter/openinterpreter | 69k | 3 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 5 repos | ~1.1k | Automated safety check: Pass | MIT |
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PR Babysitter
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Watches an open GitHub pull request until it merges, handling review comments, diagnosing CI failures and retrying flaky checks along the way.
Code Review Checklist
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Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
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Iteratively improves a PR (GitHub), MR (GitLab), or shelved changelist (Perforce) until Greptile gives it a 5/5 confidence score with zero unresolved comments.
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Related
Categories
Questions about Avoiding Common Lisp Pitfalls
What does Avoiding Common Lisp Pitfalls do?
A skill your agent uses when writing new or large Common Lisp code where subtle library or language gotchas are likely — event-emitter argument order, parenthesis imbalance in a big file, or a…. Avoiding Common Lisp Pitfalls is an agent skill from ultralisp/ultralisp. Use when writing new or large Common Lisp code where subtle library or language gotchas are likely — event-emitter argument order, parenthesis imbalance in a big file, or a defmethod whose specializers may silently collide with one in a dependency.
When should I use Avoiding Common Lisp Pitfalls?
Avoiding Common Lisp Pitfalls fits situations like: large Common Lisp code where subtle library; language gotchas are likely — event-emitter argument order; parenthesis imbalance in a big file; A defmethod whose specializers may silently collide with one in a dependency.
How do I install Avoiding Common Lisp Pitfalls in Claude Code?
Run `npx skills add ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a claude-code`. Or copy the skill folder (.agents/skills/avoiding-common-lisp-pitfalls in ultralisp/ultralisp) into .claude/skills/avoiding-common-lisp-pitfalls in your project. Claude Code loads it when a task matches its description.
How do I install Avoiding Common Lisp Pitfalls in Codex?
Run `npx skills add ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a codex`. Or copy the skill folder (.agents/skills/avoiding-common-lisp-pitfalls in ultralisp/ultralisp) into .agents/skills/avoiding-common-lisp-pitfalls in your project. Codex loads it when a task matches its description.
Can I use Avoiding Common Lisp Pitfalls 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 ultralisp/ultralisp --skill avoiding-common-lisp-pitfalls -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/avoiding-common-lisp-pitfalls, .gemini/skills/avoiding-common-lisp-pitfalls, .github/skills/avoiding-common-lisp-pitfalls and .opencode/skills/avoiding-common-lisp-pitfalls in your project.
What does Avoiding Common Lisp Pitfalls need to run?
SKILL.md names no scripts, command-line tools or credentials: Avoiding Common Lisp Pitfalls is instructions for the agent only.
Does Avoiding Common Lisp Pitfalls 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 Avoiding Common Lisp Pitfalls 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 Avoiding Common Lisp Pitfalls use?
No licence was found for Avoiding Common Lisp Pitfalls or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Avoiding Common Lisp Pitfalls use?
About 1.3k tokens (SKILL.md is roughly 5.2k 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 Avoiding Common Lisp Pitfalls?
Skills that share tags, products or a category with Avoiding Common Lisp Pitfalls: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Avoiding Common Lisp Pitfalls?
ultralisp (a GitHub organization) maintains it in ultralisp/ultralisp, which has 258 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on September 13, 2026.
Source: ultralisp/ultralisp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.