Agent skill

Dynamo Dotnet Janitor

Perform janitorial tasks on C/.NET code including cleanup, modernization, and tech debt remediation.

Apache-2.0Auto-check passedDevelopment

Install Dynamo Dotnet Janitor

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .claude/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .claude/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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

$skill-installer install https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor

Type 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.

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .agents/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .agents/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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.

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .cursor/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .cursor/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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

$ gemini skills install https://github.com/DynamoDS/Dynamo.git --path .claude/skills/dynamo-dotnet-janitor

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .gemini/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .gemini/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor

Installs 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).

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .github/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .github/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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.

skills CLI

$ npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install DynamoDS/Dynamo dynamo-dotnet-janitor --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DynamoDS/Dynamo.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/dynamo-dotnet-janitor .opencode/skills/dynamo-dotnet-janitor && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "dynamo-dotnet-janitor" agent skill from https://github.com/DynamoDS/Dynamo/tree/master/.claude/skills/dynamo-dotnet-janitor into .opencode/skills/dynamo-dotnet-janitor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dynamo-dotnet-janitor", 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: dynamo-dotnet-janitor
GitHub stars: 2k
Token cost: ~682 tokens
SKILL.md length: 311 words
Files: 1
Skills in repo: 13
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Perform janitorial tasks on C/.NET code including cleanup, modernization, and tech debt remediation.

Works in 5 steps: Validate Changes: Run tests after each… → Incremental Updates: Make small, focused… → Preserve Behavior: Maintain existing… → …
Tasks that involve Legacy modernization
SKILL.md covers Core Tasks, Documentation Resources, Execution Rules and Analysis Order
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Dynamo Dotnet Janitor is an agent skill from DynamoDS/Dynamo. Perform janitorial tasks on C/.NET code including cleanup, modernization, and tech debt remediation.

Its SKILL.md is about 680 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 Legacy modernization and Technical debt. It works with .NET and C#. The repository describes itself as: Open Source Graphical Programming for Computational Design and Automation. The licence is Apache-2.0.

When your agent uses it

Tasks that involve Legacy modernization
Tasks that involve Technical debt

Example prompts

“/dynamo-dotnet-janitor”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Validate Changes: Run tests after each modification
Incremental Updates: Make small, focused changes
Preserve Behavior: Maintain existing functionality
Follow Conventions: Apply consistent coding standards
Safety First: Backup before major refactoring

What it can do on your machine

Read from SKILL.md and the folder at commit 72b753c. 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

Dynamo Dotnet Janitor loads about 682 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 311 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~31
When it runs · the whole SKILL.md, loaded when a task matches: ~682

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 DynamoDS/Dynamo at commit 72b753c, republished under its Apache-2.0 licence (© DynamoDS). 311 words, ~682 tokens.

Download SKILL.mdSave it as .claude/skills/dynamo-dotnet-janitor/SKILL.md (or your agent's skills folder).

name: dynamo-dotnet-janitor
description: Perform janitorial tasks on C#/.NET code including cleanup, modernization, and tech debt remediation.

Dynamo dotNET Janitor

Perform janitorial tasks on C#/.NET codebases. Focus on code cleanup, modernization, and technical debt remediation.

Core Tasks

Code Modernization

Update to modern C# language features and syntax patterns supported by the project's target framework (currently the C# language version for .NET 10)
Replace obsolete APIs with modern alternatives
Convert to nullable reference types where appropriate
Apply pattern matching and switch expressions
Use collection expressions and primary constructors

Code Quality

Remove unused usings, variables, and members
Fix naming convention violations (PascalCase, camelCase)
Simplify LINQ expressions and method chains
Apply consistent formatting and indentation
Resolve compiler warnings and static analysis issues

Performance Optimization

Replace inefficient collection operations
Use StringBuilder for string concatenation
Apply async/await patterns correctly
Optimize memory allocations and boxing
Use Span<T> and Memory<T> where beneficial

Test Coverage

Identify missing test coverage
Add unit tests for public APIs
Create integration tests for critical workflows
Apply AAA (Arrange, Act, Assert) pattern consistently
Use NUnit assertions consistently and prefer clear, readable assertion messages

Documentation

Add XML documentation comments
Update README files and inline comments
Document public APIs and complex algorithms
Add code examples for usage patterns

Documentation Resources

Use microsoft.docs.mcp tool to:

Look up current .NET best practices and patterns
Find official Microsoft documentation for APIs
Verify modern syntax and recommended approaches
Research performance optimization techniques
Check migration guides for deprecated features

Query examples:

"C# nullable reference types best practices"
".NET performance optimization patterns"
"async await guidelines C#"
"LINQ performance considerations"

Execution Rules

Validate Changes: Run tests after each modification
Incremental Updates: Make small, focused changes
Preserve Behavior: Maintain existing functionality
Follow Conventions: Apply consistent coding standards
Safety First: Backup before major refactoring

Analysis Order

Scan for compiler warnings and errors
Identify deprecated/obsolete usage
Check test coverage gaps
Review performance bottlenecks
Assess documentation completeness

Apply changes systematically, testing after each modification.

Files

Just SKILL.md in .claude/skills/dynamo-dotnet-janitor of DynamoDS/Dynamo.

Open the folder on GitHubat commit 72b753c

Compare with similar skills

Dynamo Dotnet Janitor 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.

Dynamo Dotnet Janitor compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Dynamo Dotnet Janitor this skillDynamoDS/Dynamo	2k	—	~682	Automated safety check: Pass	Apache-2.0	today
Migrate Dotnet8 To Dotnet9dotnet/skills	5.6k	2 repos	~3.9k	Automated safety check: Pass	MIT	today
Aspire Project V2 MigrationCommunityToolkit/Aspire	629	—	~3.4k	Automated safety check: Pass	MIT	today
Modern Csharpcodewithmukesh/dotnet-claude-kit	755	1 repos	~1.7k	Automated safety check: Pass	MIT	2 mo ago
Fsharpmanagedcode/dotnet-skills	486	—	~1.9k	Automated safety check: Pass	MIT	today
Migrate Dotnet9 To Dotnet10dotnet/skills	5.6k	2 repos	~4.8k	Automated safety check: Pass	MIT	today

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Questions about Dynamo Dotnet Janitor

What does Dynamo Dotnet Janitor do?

Perform janitorial tasks on C/.NET code including cleanup, modernization, and tech debt remediation. Dynamo Dotnet Janitor is an agent skill from DynamoDS/Dynamo.NET code including cleanup, modernization, and tech debt remediation.

When should I use Dynamo Dotnet Janitor?

Dynamo Dotnet Janitor fits situations like: tasks that involve Legacy modernization; tasks that involve Technical debt.

How do I install Dynamo Dotnet Janitor in Claude Code?

Run `npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a claude-code`. Or copy the skill folder (.claude/skills/dynamo-dotnet-janitor in DynamoDS/Dynamo) into .claude/skills/dynamo-dotnet-janitor in your project. Claude Code loads it when a task matches its description.

How do I install Dynamo Dotnet Janitor in Codex?

Run `npx skills add DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a codex`. Or copy the skill folder (.claude/skills/dynamo-dotnet-janitor in DynamoDS/Dynamo) into .agents/skills/dynamo-dotnet-janitor in your project. Codex loads it when a task matches its description.

Can I use Dynamo Dotnet Janitor 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 DynamoDS/Dynamo --skill dynamo-dotnet-janitor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dynamo-dotnet-janitor, .gemini/skills/dynamo-dotnet-janitor, .github/skills/dynamo-dotnet-janitor and .opencode/skills/dynamo-dotnet-janitor in your project.

What does Dynamo Dotnet Janitor need to run?

SKILL.md names no scripts, command-line tools or credentials: Dynamo Dotnet Janitor is instructions for the agent only.

Does Dynamo Dotnet Janitor 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 Dynamo Dotnet Janitor 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 Dynamo Dotnet Janitor use?

Dynamo Dotnet Janitor is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Dynamo Dotnet Janitor use?

About 682 tokens (SKILL.md is roughly 2.7k 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 Dynamo Dotnet Janitor?

Skills that share tags, products or a category with Dynamo Dotnet Janitor: Migrate Dotnet8 To Dotnet9 (dotnet/skills, 5.6k stars), Aspire Project V2 Migration (CommunityToolkit/Aspire, 629 stars), Modern Csharp (codewithmukesh/dotnet-claude-kit, 755 stars) and Fsharp (managedcode/dotnet-skills, 486 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Dynamo Dotnet Janitor?

DynamoDS (a GitHub organization) maintains it in DynamoDS/Dynamo, which has 2,034 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 9, 2026.

Source: DynamoDS/Dynamo on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Dynamo Dotnet Janitor

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Dynamo dotNET Janitor

Core Tasks

Code Modernization

Code Quality

Performance Optimization

Test Coverage

Documentation

Documentation Resources

Execution Rules

Analysis Order

Files

Compare with similar skills

Similar skills

More from DynamoDS/Dynamo

Related

Questions about Dynamo Dotnet Janitor