Systematic Debugging
ultralisp/ultralisp
A skill your agent uses when encountering any bug, test failure, or unexpected behavior, before proposing fixes
Debugging specialist for errors, test failures, and unexpected behavior.
Install Debugger
$ npx skills add davila7/claude-code-templates --skill debugger -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install davila7/claude-code-templates debugger --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/davila7/claude-code-templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .claude/skills/debugger && 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 "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .claude/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debuggerType 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 davila7/claude-code-templates --skill debugger -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install davila7/claude-code-templates debugger --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .agents/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .agents/skills/debugger && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .agents/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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 davila7/claude-code-templates --skill debugger -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install davila7/claude-code-templates debugger --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .cursor/skills/debugger && 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 "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .cursor/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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/davila7/claude-code-templates.git --path cli-tool/components/skills/productivity/debugger--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 davila7/claude-code-templates --skill debugger -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install davila7/claude-code-templates debugger --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .gemini/skills/debugger && 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 "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .gemini/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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 davila7/claude-code-templates debuggerInstalls 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 davila7/claude-code-templates --skill debugger -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .github/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .github/skills/debugger && 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 "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .github/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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 davila7/claude-code-templates --skill debugger -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install davila7/claude-code-templates debugger --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/cli-tool/components/skills/productivity/debugger .opencode/skills/debugger && 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 "debugger" agent skill from https://github.com/davila7/claude-code-templates/tree/main/cli-tool/components/skills/productivity/debugger into .opencode/skills/debugger/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debugger", 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
debugger- GitHub stars
- 32k
- Used in
- 7 other repos
- Token cost
- ~334 tokens
- SKILL.md length
- 151 words
- Files
- 1
- Skills in repo
- 477
- Repo updated
- First seen
- Licence
- MIT
At a glance
Debugging specialist for errors, test failures, and unexpected behavior.
- Works in 5 steps: Capture error message and stack trace → Identify reproduction steps → Isolate the failure location → …
- Tasks that involve Failing and flaky tests
- SKILL.md covers Use this skill when, Do not use this skill when and Instructions
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Debugger is an agent skill from davila7/claude-code-templates. Debugging specialist for errors, test failures, and unexpected behavior. Use proactively when encountering any issues.
Its SKILL.md is about 330 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, covering Failing and flaky tests and Debugging. The repository describes itself as: CLI tool for configuring and monitoring Claude Code. The licence is MIT.
When your agent uses it
- Tasks that involve Failing and flaky tests
- Tasks that involve Debugging
Example prompts
- “/debugger”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Capture error message and stack trace
- Identify reproduction steps
- Isolate the failure location
- Implement minimal fix
- Verify solution works
What it can do on your machine
Read from SKILL.md and the folder at commit 4c82aba. 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.
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
Debugger loads about 334 tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 151 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
The full file from davila7/claude-code-templates at commit 4c82aba, republished under its MIT licence (© davila7). 151 words, ~334 tokens.
Download SKILL.mdSave it as
.claude/skills/debugger/SKILL.md (or your agent's skills folder).- name
- debugger
- description
- Debugging specialist for errors, test failures, and unexpected behavior. Use proactively when encountering any issues.
- risk
- safe
- source
- community
- date_added
- 2026-02-27
Use this skill when
- Working on debugger tasks or workflows
- Needing guidance, best practices, or checklists for debugger
Do not use this skill when
- The task is unrelated to debugger
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open
resources/implementation-playbook.md.
You are an expert debugger specializing in root cause analysis.
When invoked:
- Capture error message and stack trace
- Identify reproduction steps
- Isolate the failure location
- Implement minimal fix
- Verify solution works
Debugging process:
- Analyze error messages and logs
- Check recent code changes
- Form and test hypotheses
- Add strategic debug logging
- Inspect variable states
For each issue, provide:
- Root cause explanation
- Evidence supporting the diagnosis
- Specific code fix
- Testing approach
- Prevention recommendations
Focus on fixing the underlying issue, not just symptoms.
© davila7, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in cli-tool/components/skills/productivity/debugger of davila7/claude-code-templates.
Open the folder on GitHubat commit 4c82aba
Used in 7 other repositories
We found 16 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 7 other GitHub owners. This page covers the copy in davila7/claude-code-templates, which our catalogue first saw on October 7, 2026.
- aiskillstore/marketplaceskills/sickn33/debugger
- sickn33/agentic-awesome-skillsskills/debuggerplugins/agentic-awesome-skills/skills/debugger+1 more
- rmyndharis/antigravity-skillsskills/debugger
- agent-skills-hub/agent-skills-hubskills/debugger
- lingxling/awesome-skills-cnantigravity-awesome-skills/skills/debuggerantigravity-awesome-skills/plugins/agentic-awesome-skills/skills/debugger+1 more
- benjaminasterA/antigravity-awesome-skillsskills/debugger
- henryalouf/ruflow.agents/skills/debugger.agents/skills/antigravity-awesome-skills/skills/debugger+4 more
Compare with similar skills
Debugger 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 |
|---|---|---|---|---|---|---|
| Debugger this skilldavila7/claude-code-templates | 32k | 7 repos | ~334 | Automated safety check: Pass | MIT | |
| Systematic Debuggingultralisp/ultralisp | 258 | 51 repos | ~2.4k | Automated safety check: Pass | None | |
| Exposed Bug Fix WorkflowJetBrains/Exposed | 9.3k | — | ~3.8k | Automated safety check: Pass | Apache-2.0 | |
| React Router Bug Fix Workflowremix-run/react-router | 57k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Systematic DebuggingChrisWiles/claude-code-showcase | 6.1k | 3 repos | ~1.2k | Automated safety check: Pass | None | |
| Debugging and Error Recoveryaddyosmani/agent-skills | 102k | 1 repos | ~2.6k | Automated safety check: Pass | MIT |
Similar skills
- Official
Exposed Bug Fix Workflow
JetBrains/Exposed
Takes a GitHub or YouTrack issue for the Exposed project through reproduction, a failing test, a fix, validation and a pull request.
React Router Bug Fix Workflow
remix-run/react-router
Fixes a React Router bug reported in a GitHub issue end to end: fetching the issue, validating the reproduction, writing a failing test and implementing the fix on a new branch.
Systematic Debugging
ChrisWiles/claude-code-showcase
Applies a four-phase debugging routine that finds the root cause of a bug or failing test before any fix is written.
Debugging and Error Recovery
addyosmani/agent-skills
Applies a stop-the-line rule and a step-by-step triage when tests fail, builds break or something stops working, aiming at the root cause instead of guesses.
Systematic Debugging
ed3dai/ed3d-plugins
A skill your agent uses when encountering any bug, test failure, or unexpected behavior, before proposing fixes - four-phase framework (root cause investigation, pattern analysis, hypothesis…
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Related
Categories
Questions about Debugger
What does Debugger do?
Debugging specialist for errors, test failures, and unexpected behavior. Debugger is an agent skill from davila7/claude-code-templates. Debugging specialist for errors, test failures, and unexpected behavior.
When should I use Debugger?
Debugger fits situations like: tasks that involve Failing and flaky tests; tasks that involve Debugging.
How do I install Debugger in Claude Code?
Run `npx skills add davila7/claude-code-templates --skill debugger -a claude-code`. Or copy the skill folder (cli-tool/components/skills/productivity/debugger in davila7/claude-code-templates) into .claude/skills/debugger in your project. Claude Code loads it when a task matches its description.
How do I install Debugger in Codex?
Run `npx skills add davila7/claude-code-templates --skill debugger -a codex`. Or copy the skill folder (cli-tool/components/skills/productivity/debugger in davila7/claude-code-templates) into .agents/skills/debugger in your project. Codex loads it when a task matches its description.
Can I use Debugger 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 davila7/claude-code-templates --skill debugger -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/debugger, .gemini/skills/debugger, .github/skills/debugger and .opencode/skills/debugger in your project.
What does Debugger need to run?
SKILL.md names no scripts, command-line tools or credentials: Debugger is instructions for the agent only.
Does Debugger 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 Debugger 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 Debugger use?
Debugger is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Debugger use?
About 334 tokens (SKILL.md is roughly 1.3k 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 Debugger?
Skills that share tags, products or a category with Debugger: Systematic Debugging (ultralisp/ultralisp, 258 stars), Exposed Bug Fix Workflow (JetBrains/Exposed, 9.3k stars), React Router Bug Fix Workflow (remix-run/react-router, 57k stars) and Systematic Debugging (ChrisWiles/claude-code-showcase, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Debugger?
davila7 (a GitHub user) maintains it in davila7/claude-code-templates, which has 32,432 GitHub stars. The repository holds 477 skills in this directory. The repository was last updated on October 7, 2026.
Source: davila7/claude-code-templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.