Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
Review common AI slops of defensive programming patterns, avoid silent errors.
Install Anti Defensive
$ npx skills add archibate/dotfiles-opencode --skill anti-defensive -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install archibate/dotfiles-opencode anti-defensive --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/archibate/dotfiles-opencode.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/anti-defensive .claude/skills/anti-defensive && 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 "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .claude/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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/archibate/dotfiles-opencode/tree/main/skills/anti-defensiveType 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 archibate/dotfiles-opencode --skill anti-defensive -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install archibate/dotfiles-opencode anti-defensive --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archibate/dotfiles-opencode.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/anti-defensive .agents/skills/anti-defensive && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .agents/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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 archibate/dotfiles-opencode --skill anti-defensive -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install archibate/dotfiles-opencode anti-defensive --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archibate/dotfiles-opencode.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/anti-defensive .cursor/skills/anti-defensive && 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 "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .cursor/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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/archibate/dotfiles-opencode.git --path skills/anti-defensive--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 archibate/dotfiles-opencode --skill anti-defensive -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install archibate/dotfiles-opencode anti-defensive --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archibate/dotfiles-opencode.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/anti-defensive .gemini/skills/anti-defensive && 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 "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .gemini/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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 archibate/dotfiles-opencode anti-defensiveInstalls 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 archibate/dotfiles-opencode --skill anti-defensive -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/archibate/dotfiles-opencode.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/anti-defensive .github/skills/anti-defensive && 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 "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .github/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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 archibate/dotfiles-opencode --skill anti-defensive -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install archibate/dotfiles-opencode anti-defensive --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archibate/dotfiles-opencode.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/anti-defensive .opencode/skills/anti-defensive && 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 "anti-defensive" agent skill from https://github.com/archibate/dotfiles-opencode/tree/main/skills/anti-defensive into .opencode/skills/anti-defensive/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "anti-defensive", 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
anti-defensive- GitHub stars
- 108
- Token cost
- ~1.6k tokens
- SKILL.md length
- 416 words
- Files
- 1
- Skills in repo
- 34
- Repo updated
- First seen
- Licence
- None found
At a glance
Review common AI slops of defensive programming patterns, avoid silent errors.
- Works in 10 steps: Swallowing Exceptions → Dictionary Defaults on Required Fields → Null Coalescing to Fabricate Data → …
- Reviewing code for defensive anti-patterns
- SKILL.md covers Philosophy, Anti-Patterns, When Defensive IS Correct and Quick Reference
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Anti Defensive is an agent skill from archibate/dotfiles-opencode. Review common AI slops of defensive programming patterns, avoid silent errors. TRIGGER when reviewing code for defensive anti-patterns, writing fail-fast code, or auditing error handling quality.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development. The repository describes itself as: Archibate's personal configuration for OpenCode.
When your agent uses it
- Reviewing code for defensive anti-patterns
- Writing fail-fast code
- Auditing error handling quality
Example prompts
- “/anti-defensive”
Requirements
- Python 3
Workflow steps
10 steps, taken from the step headings in SKILL.md.
- Swallowing Exceptions
- Dictionary Defaults on Required Fields
- Null Coalescing to Fabricate Data
- Type Coercion Instead of Validation
- Compatibility Shims
- Unnecessary Null Checks
- Catch-All Exception Handlers
- Over-Validation at Internal Boundaries
- Fabricated Default Values
- Logging Warnings Instead of Raising
What it can do on your machine
Read from SKILL.md and the folder at commit 46b6b23. 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 python).
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
Anti Defensive loads about 1.6k tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 416 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 416 words (~1,580 tokens).
“AI coding assistants systematically over-produce defensive code due to:”
- name
- anti-defensive
Files
Just SKILL.md in skills/anti-defensive of archibate/dotfiles-opencode.
Open the folder on GitHubat commit 46b6b23
Compare with similar skills
Anti Defensive 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 |
|---|---|---|---|---|---|---|
| Anti Defensive this skillarchibate/dotfiles-opencode | 108 | — | ~1.6k | Automated safety check: Pass | None | |
| Vercel Composition Patternssupabase/supabase | 111k | 58 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 297k | 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 | 4 repos | ~1.1k | Automated safety check: Pass | MIT |
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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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Related
Categories
Questions about Anti Defensive
What does Anti Defensive do?
Review common AI slops of defensive programming patterns, avoid silent errors. Anti Defensive is an agent skill from archibate/dotfiles-opencode. Review common AI slops of defensive programming patterns, avoid silent errors.
When should I use Anti Defensive?
Anti Defensive fits situations like: reviewing code for defensive anti-patterns; writing fail-fast code; auditing error handling quality.
How do I install Anti Defensive in Claude Code?
Run `npx skills add archibate/dotfiles-opencode --skill anti-defensive -a claude-code`. Or copy the skill folder (skills/anti-defensive in archibate/dotfiles-opencode) into .claude/skills/anti-defensive in your project. Claude Code loads it when a task matches its description.
How do I install Anti Defensive in Codex?
Run `npx skills add archibate/dotfiles-opencode --skill anti-defensive -a codex`. Or copy the skill folder (skills/anti-defensive in archibate/dotfiles-opencode) into .agents/skills/anti-defensive in your project. Codex loads it when a task matches its description.
Can I use Anti Defensive 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 archibate/dotfiles-opencode --skill anti-defensive -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/anti-defensive, .gemini/skills/anti-defensive, .github/skills/anti-defensive and .opencode/skills/anti-defensive in your project.
What does Anti Defensive need to run?
SKILL.md names no scripts, command-line tools or credentials: Anti Defensive is instructions for the agent only. Our summary lists: Python 3.
Does Anti Defensive 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 Anti Defensive 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 Anti Defensive use?
No licence was found for Anti Defensive or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Anti Defensive use?
About 1.6k tokens (SKILL.md is roughly 6.3k 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 Anti Defensive?
Skills that share tags, products or a category with Anti Defensive: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k 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 Anti Defensive?
archibate (a GitHub user) maintains it in archibate/dotfiles-opencode, which has 108 GitHub stars. The repository holds 34 skills in this directory. The repository was last updated on April 29, 2026.
Source: archibate/dotfiles-opencode on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.