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CodingCossack/agent-skills-library
Coding agent skills library for programming workflows | Claude Skills, Codex Skills | Forked from obra/superpower
History
Review weekly changes to SKILL.md before updating. Dates mark the weeks in which we observed each version; checks apply to the recorded commits.
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skills/brainstorming/SKILL.md
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skills/dispatching-parallel-agents/SKILL.md
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skills/executing-plans/SKILL.md
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skills/finishing-a-development-branch/SKILL.md
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skills/receiving-code-review/SKILL.md
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skills/requesting-code-review/SKILL.md
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skills/subagent-driven-development/SKILL.md
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skills/systematic-debugging/SKILL.md
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skills/test-driven-development/SKILL.md
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skills/using-git-worktrees/SKILL.md
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skills/using-superpowers/SKILL.md
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skills/verification-before-completion/SKILL.md
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skills/writing-plans/SKILL.md
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skills/writing-skills/SKILL.md
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Heat
0.3- Star growth, last 7 daysNot available
- Star growth, last 24 hoursNot available
- Rank movement, last 7 daysNot available
- Commits, last 30 daysNot available
- Accounts asking about it through MCP, last 7 daysNot available
- Hot votes this weekNot available
Heat never changes the order by stars, and sponsorship never touches it. How heat works
Stars over time
30-day change not yet available: not enough history.
Individual skills in this repository
- brainstorming
skills/brainstorming - dispatching-parallel-agents
skills/dispatching-parallel-agents - executing-plans
skills/executing-plans - finishing-a-development-branch
skills/finishing-a-development-branch - receiving-code-review
skills/receiving-code-review - requesting-code-review
skills/requesting-code-review - subagent-driven-development
skills/subagent-driven-development - systematic-debugging
skills/systematic-debugging - test-driven-development
skills/test-driven-development - using-git-worktrees
skills/using-git-worktrees - using-superpowers
skills/using-superpowers - verification-before-completion
skills/verification-before-completion - writing-plans
skills/writing-plans - writing-skills
skills/writing-skills
How it works
brainstorming
When your agent uses it
Collaborative design exploration that refines ideas into validated specs through iterative questioning. Use before any creative work including creating features, building components, adding functionality, or modifying behavior.
What it loads into context
Frontmatter
39 tokensAlways available to the agent
SKILL.md
498 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- The Process
- After the Design
- Key Principles
Files
SKILL.mdcore2,451 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubdispatching-parallel-agents
When your agent uses it
Dispatches one subagent per independent domain to parallelize investigation/fixes. Use when you have 2+ unrelated failures (e.g., separate failing test files, subsystems, bugs) with no shared state or ordering dependencies.
What it loads into context
Frontmatter
57 tokensAlways available to the agent
SKILL.md
826 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Dispatch Workflow
- Agent Prompt Template
- Common Mistakes
- Example
Files
SKILL.mdcore3,439 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubexecuting-plans
When your agent uses it
Disciplined plan execution for implementation tasks. Use when executing a saved implementation plan, following step-by-step instructions from a plan document.
What it loads into context
Frontmatter
35 tokensAlways available to the agent
SKILL.md
727 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- Quick Reference
- The Process
- When to Stop and Ask for Help
- When to Revisit Earlier Steps
- Common Mistakes
- Integration
- Remember
Files
SKILL.mdcore3,230 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubfinishing-a-development-branch
When your agent uses it
Git branch completion workflow. Use when implementation is complete, tests pass, and a feature branch needs to be integrated via merge, pull request, or cleanup.
What it loads into context
Frontmatter
41 tokensAlways available to the agent
SKILL.md
1,479 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- The Process
- Quick Reference
- Terminal States
- Guardrails
- Integration
Files
SKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytesSKILL.mdcore5,510 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubreceiving-code-review
When your agent uses it
Assesses and responds to incoming code review feedback on PRs (reviewer comments, requested changes), especially when suggestions are unclear, technically questionable, or scope-expanding. Use before implementing review suggestions to align on intent and keep changes minimal.
What it loads into context
Frontmatter
56 tokensAlways available to the agent
SKILL.md
1,440 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- When NOT to Use
- The Response Pattern
- Forbidden Responses
- Handling Unclear Feedback
- Source-Specific Handling
- YAGNI Check for "Professional" Features
- Implementation Order
- When To Push Back
- Acknowledging Correct Feedback
- Gracefully Correcting Your Pushback
- Common Mistakes
- Real Examples
- The Bottom Line
Files
SKILL.mdcore6,150 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubrequesting-code-review
When your agent uses it
Use when you need to request a code review for a PR/MR and want a consistent review brief (context, scope, risk areas, test instructions, acceptance criteria) before merge.
What it loads into context
Frontmatter
45 tokensAlways available to the agent
SKILL.md
596 tokensWhen the skill is activated
Reference documents
875 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- How to Request
- Example
- Integration with Workflows
- Red Flags
Files
SKILL.mdcore2,478 bytesSKILL.mdcore2,478 bytestemplates/code-reviewer.mddoc3,728 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubsubagent-driven-development
When your agent uses it
Sequential subagent execution with two-stage review gates for implementation plans. Use when executing multi-task plans in current session, when tasks need fresh subagent context to avoid pollution, when formal review cycles (spec compliance then code quality) are required between tasks, or when you need diff-based validation of each task before proceeding.
What it loads into context
Frontmatter
72 tokensAlways available to the agent
SKILL.md
1,162 tokensWhen the skill is activated
Reference documents
3,335 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Quick Reference
- Task Contract
- State Tracking
- Process
- Prompt Templates
- Red Flags
- Dependencies
Files
SKILL.mdcore5,355 bytesreferences/example-worflow.mddoc5,740 bytestemplates/code-quality-reviewer.mddoc3,023 bytestemplates/implementer.mddoc3,315 bytestemplates/spec-reviewer.mddoc2,298 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubsystematic-debugging
When your agent uses it
Root cause analysis for debugging. Use when bugs, test failures, or unexpected behavior have non-obvious causes, or after multiple fix attempts have failed.
What it loads into context
Frontmatter
38 tokensAlways available to the agent
SKILL.md
1,064 tokensWhen the skill is activated
Reference documents
3,147 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Phase 1: Root Cause Investigation
- Phase 2: Pattern Analysis
- Phase 3: Hypothesis and Testing
- Phase 4: Implementation
- Escalation: 3+ Failed Fixes
- Red Flags → STOP and Return to Phase 1
- Human Signals You're Off Track
- Supporting Techniques
Scripts executed separately
scripts/condition-based-waiting-example.tsscripts/find-polluter.sh
Files
SKILL.mdcore4,558 bytesSKILL.mdcore4,558 bytesreferences/condition-based-waiting.mddoc3,648 bytesreferences/defense-in-depth.mddoc3,874 bytesreferences/root-cause-tracing.mddoc5,509 bytesscripts/condition-based-waiting-example.tsruns5,425 bytesscripts/find-polluter.shruns1,834 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubtest-driven-development
When your agent uses it
Red-green-refactor development methodology requiring verified test coverage. Use for feature implementation, bugfixes, refactoring, or any behavior changes where tests must prove correctness.
What it loads into context
Frontmatter
41 tokensAlways available to the agent
SKILL.md
1,743 tokensWhen the skill is activated
Reference documents
2,495 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- The Iron Law
- Red-Green-Refactor Cycle
- Good Tests
- Example: Bug Fix
- Red Flags - STOP and Start Over
- When Stuck
- Legacy Code (No Existing Tests)
- Flakiness Rules
- Debugging Integration
- Planning: Test List
- Testing Anti-Patterns
- Philosophy and Rationalizations
- Final Rule
Files
SKILL.mdcore7,576 bytesSKILL.mdcore7,576 bytesSKILL.mdcore7,576 bytesSKILL.mdcore7,576 bytesSKILL.mdcore7,576 bytesreferences/tdd-philosophy.mddoc4,299 bytesreferences/testing-anti-patterns.mddoc6,810 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubusing-git-worktrees
When your agent uses it
Git worktree–based workspace isolation for parallel or non-disruptive development. Use when work must occur without modifying or interfering with the current working tree.
What it loads into context
Frontmatter
41 tokensAlways available to the agent
SKILL.md
1,339 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- Directory Selection Process
- Safety Verification
- Creation Steps
- Quick Reference
- Common Mistakes
- Example Workflow
- Red Flags
- Integration
Files
SKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytesSKILL.mdcore5,498 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubusing-superpowers
When your agent uses it
Meta-skill enforcing skill discovery and invocation discipline through mandatory workflows. Use when starting any conversation to check for relevant skills before any response, ensuring skill-first workflow before proceeding.
What it loads into context
Frontmatter
42 tokensAlways available to the agent
SKILL.md
954 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- The Rule
- Red Flags
- Skill Priority
- Skill Types
- User Instructions ≠ Permission to Skip Workflows
Files
SKILL.mdcore4,094 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubverification-before-completion
When your agent uses it
Verification discipline for completion claims. Use when about to assert success, claim a fix is complete, report tests passing, or before commits and PRs. Enforces evidence-first workflow.
What it loads into context
Frontmatter
45 tokensAlways available to the agent
SKILL.md
726 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Core Protocol
- Verification Requirements by Claim Type
- Red Flags — STOP
- Rationalization Prevention
- Key Patterns
Files
SKILL.mdcore3,077 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubwriting-plans
When your agent uses it
Structured implementation planning for multi-step development tasks. Use when you have a spec or requirements and need to break work into executable steps.
What it loads into context
Frontmatter
34 tokensAlways available to the agent
SKILL.md
777 tokensWhen the skill is activated
Reference documents
0 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- Before Writing
- Bite-Sized Task Granularity
- Plan Document Header
- Task Structure
- Before Handoff
- Execution Handoff
Files
SKILL.mdcore3,233 bytesSKILL.mdcore3,233 bytesSKILL.mdcore3,233 bytesSKILL.mdcore3,233 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubwriting-skills
When your agent uses it
Use when creating new skills, editing existing skills, or verifying skills work before deployment
What it loads into context
Frontmatter
24 tokensAlways available to the agent
SKILL.md
4,993 tokensWhen the skill is activated
Reference documents
16,418 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Overview
- What is a Skill?
- TDD Mapping for Skills
- When to Create a Skill
- Skill Types
- Directory Structure
- SKILL.md Structure
- Claude Search Optimization (CSO)
- Flowchart Usage
- Code Examples
- File Organization
- The Iron Law (Same as TDD)
- Testing All Skill Types
- Common Rationalizations for Skipping Testing
- Bulletproofing Skills Against Rationalization
- RED-GREEN-REFACTOR for Skills
- Anti-Patterns
- STOP: Before Moving to Next Skill
- Skill Creation Checklist (TDD Adapted)
- Discovery Workflow
- The Bottom Line
Scripts executed separately
render-graphs.js
Files
SKILL.mdcore22,341 bytesSKILL.mdcore22,341 bytesSKILL.mdcore22,341 bytesanthropic-best-practices.mddoc45,825 bytesexamples/CLAUDE_MD_TESTING.mddoc5,423 bytesgraphviz-conventions.dotasset5,970 bytespersuasion-principles.mddoc5,908 bytesrender-graphs.jsruns4,857 bytestesting-skills-with-subagents.mddoc12,557 bytes
No excerpt is shown for this license. Read the source on GitHub.
View the complete source on GitHubSkills included
- brainstorming
- dispatching-parallel-agents
- executing-plans
- finishing-a-development-branch
- receiving-code-review
- requesting-code-review
- subagent-driven-development
- systematic-debugging
- test-driven-development
- using-git-worktrees
- using-superpowers
- verification-before-completion
- writing-plans
- writing-skills
Repository facts
- License
- No license detected
- Created
- Dec 22, 2025
- Last pushed
- Jan 3, 2026
- Forks
- 2
- Open issues
- 0
- Project activity
- Slowing
Before you install
Local scriptsAutomated signals, not a guarantee
Checked Nov 4, 2026
Not fully analyzed: some files were too long, unreadable or missing. This never lowers the level.
Show 25 notes
skills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/finishing-a-development-branch/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/requesting-code-review/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/systematic-debugging/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/test-driven-development/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/test-driven-development/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/test-driven-development/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/test-driven-development/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzedskills/using-git-worktrees/SKILL.md:1Analysis incomplete: Referenced executable target unavailable; not analyzed
- No broad tool permissions
- No dangerous shell commands
- 6 network referencesin 2 files: writing-skills/anthropic-best-practices.md:13 finishing-a-development-branch/SKILL.md:95
- No hidden or obfuscated text
- No instruction overrides
- No access to secrets
- No requests to vote in Hot
Show all 9 signals by file
skills/finishing-a-development-branch/SKILL.md
skills/systematic-debugging/scripts/condition-based-waiting-example.ts
- Executable scriptline 1
Executable file
skills/systematic-debugging/scripts/find-polluter.sh
- Executable scriptline 1
#!/usr/bin/env bash
skills/writing-skills/anthropic-best-practices.md
- Network accessline 13
The [context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) is a public good. Your Skill shares the context window with everything else Claude needs to know, including: - Network accessline 249
<img src="https://mintcdn.com/anthropic-claude-docs/4Bny2bjzuGBK7o00/images/agent-skills-simple-file.png?fit=max&auto=format&n=4Bny2bjzuGBK7o00&q=85&s=87782ff239b297d9a9e8e1b72ed72db9" alt="Simple SKILL.md file showing YAML frontmatter and - Network accessline 253
<img src="https://mintcdn.com/anthropic-claude-docs/4Bny2bjzuGBK7o00/images/agent-skills-bundling-content.png?fit=max&auto=format&n=4Bny2bjzuGBK7o00&q=85&s=a5e0aa41e3d53985a7e3e43668a33ea3" alt="Bundling additional reference files like refe - Network accessline 919
<img src="https://mintcdn.com/anthropic-claude-docs/4Bny2bjzuGBK7o00/images/agent-skills-executable-scripts.png?fit=max&auto=format&n=4Bny2bjzuGBK7o00&q=85&s=4bbc45f2c2e0bee9f2f0d5da669bad00" alt="Bundling executable scripts alongside instr
skills/writing-skills/render-graphs.js
- Executable scriptline 1
#!/usr/bin/env node
How the signals fit together
Facts from a static read of the files at the pinned commit. They describe what the code does, not why.
Some files could not be read; the facts below still hold.
Signal confidence: 9 facts
- Network access in code of the SKILL.mdfinishing-a-development-branch/SKILL.md:95High confidence
- Network access in code of the SKILL.mdfinishing-a-development-branch/SKILL.md:96High confidence
- Executable script in a comment of a file that runssystematic-debugging/scripts/condition-based-waiting-example.ts:1Low confidence
- Executable script in code of a file that runssystematic-debugging/scripts/find-polluter.sh:1High confidence
- Network access in prose of documentationwriting-skills/anthropic-best-practices.md:13Low confidence
- Network access in prose of documentationwriting-skills/anthropic-best-practices.md:249Low confidence
- Network access in prose of documentationwriting-skills/anthropic-best-practices.md:253Low confidence
- Network access in prose of documentationwriting-skills/anthropic-best-practices.md:919Low confidence
- Executable script in code of a file that runswriting-skills/render-graphs.js:1High confidence
Works with
| Agent | Status | Evidence | Install to |
|---|---|---|---|
| Claude Code | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .claude/skills/<skill-name>/ |
| Codex | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .agents/skills/<skill-name>/ |
| Cursor | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .cursor/skills/<skill-name>/ |
| Gemini CLI | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .gemini/skills/<skill-name>/ |
| GitHub Copilot | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .github/skills/<skill-name>/ |
| OpenCode | Compatible | Standard SKILL.md skills/brainstorming/SKILL.md | .opencode/skills/<skill-name>/ |
- Native The repository ships a manifest, folder or frontmatter field for this agent.
- Compatible A standard SKILL.md that this agent can read.
- Unknown No evidence either way.
Derived automatically from paths, manifests and frontmatter. Not tested on each agent.
