aitools

Batch-process your code with AI CLI editors.

aitools is a PowerShell module that wraps AI coding assistants like Claude Code, Aider, Gemini CLI, and GitHub Copilot CLI. It automates code refactoring, migrations, and documentation tasks by making these AI tools scriptable through PowerShell.

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What is aitools?

aitools wraps agentic CLI tools - AI assistants that actually read, understand, and rewrite your code - and makes them scriptable through PowerShell. Every run starts fresh with no conversation drift, just consistent output.

In 30 seconds:

# Install the module
Install-Module aitools

# Install Claude
Install-AITool -Name Claude

# Migrate all your Pester tests from v4 to v5
Get-ChildItem tests\*.Tests.ps1 | Update-PesterTest

aitools handles the AI coordination, file I/O, and change tracking while giving you PowerShell's predictability.

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Why I built this

Each AI CLI has different flags, installation steps, and quirks. Processing 100 files means clicking through each one in an IDE or writing shell scripts that break when the CLI changes. I built a wrapper and figured I'd share it.

What it does:

• One consistent interface across multiple AI CLIs
• Simple batch operations: pipe files in, get results out
• Handles installation, updates, and configuration
• Tracks changes for review before committing

Each file is processed in a fresh session, which means consistent output without conversation drift. Parallel processing, automatic retry logic, and the ability to skip already-modified files make it practical for large-scale operations.

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Getting started

Requirements

• PowerShell 3+ or later
• Windows, Linux, or macOS

Install aitools

Install-Module aitools -Scope CurrentUser

Install AI tools

Pick the AI assistant you want:

# Install one
Install-AITool -Name Claude

# Or several
Install-AITool -Name Gemini, Aider

# Or all of them
Install-AITool -Name All

Set your default

Set-AIToolDefault -Tool Claude

Now any aitools command will use Claude unless you specify otherwise.

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Quick examples

Migrate test frameworks

Get-ChildItem ./tests/*.Tests.ps1 | Update-PesterTest

Updates your Pester v4 tests to v5 syntax, handling BeforeAll/AfterAll blocks, Context/Describe changes, and parameter validation.

Add documentation

Get-ChildItem ./public/*.ps1 |
  Invoke-AITool -Prompt "Add complete comment-based help with 3 examples"

Enforce code style

Get-ChildItem *.ps1 -Recurse |
  Invoke-AITool -Prompt "Apply One True Brace Style formatting"

Compare multiple AI tools

Invoke-AITool -Path ./script.ps1 -Prompt "Optimize this" -Tool All

Runs the same task through all installed AI tools and compares results.

Choosing the right tool

# Complex refactoring: Claude for deep understanding
Get-ChildItem src\*.ps1 | Invoke-AITool -Tool Claude -Prompt ./prompts/refactor-dependency-injection.md

# Large-scale refactoring: Gemini for massive context (entire codebase awareness)
Get-ChildItem src\*.ps1 | Invoke-AITool -Tool Gemini -Prompt ./prompts/modernize-ps7.md

# Quick metadata fixes: Copilot for speed
Get-ChildItem recipes\*.md | Invoke-AITool -Tool Copilot -Prompt ./prompts/fix-recipe-metadata.md

# T-SQL case sensitivity: Copilot for fast processing
Get-ChildItem sql\*.sql | Invoke-AITool -Tool Copilot -Prompt "Convert all keywords to uppercase"

# Blog updates: Copilot for rapid content corrections
Get-ChildItem blog\*.md | Invoke-AITool -Tool Copilot -Prompt ./prompts/update-blog-links.md

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Supported AI Tools

Tool	Best For	Pricing	Status
Claude	Complex refactoring, architectural changes	Subscription	✅ Supported
Gemini CLI	Massive context (1M tokens), multimodal	Free + paid	✅ Supported
Copilot	Fast tasks, blog updates, GitHub workflow	Free + paid	✅ Supported
Aider	Reliable diffs, fast iteration	Free + paid	✅ Supported
Codex CLI	Fast processing, vision support	Subscription	✅ Supported
Cursor AI	IDE integration	Free + paid	✅ Supported
Ollama	Offline use, completely free	Free	✅ Supported
PSOpenAI	Image/video/audio generation	Pay-per-use	✅ Supported

Which one to use

• Claude excels at complex refactoring and architectural changes where deep code understanding is critical, but can struggle with files over 400 lines
• Gemini 3 handles complex refactoring with a massive 1 million-token context window, allowing you to process entire large codebases in one session. Strong at multimodal understanding (code, images, video, audio) and offers a generous free tier
• Copilot shines for fast, focused tasks like blog updates, T-SQL case conversion, metadata fixes, or quick content corrections
• Ollama runs completely offline with no API costs

Note: PSOpenAI is a PowerShell module wrapper (not a CLI), providing capabilities that agentic tools don't yet support like image editing, video generation, and text-to-speech.

Tool Name Change: As of v1.0.5, ClaudeCode has been renamed to Claude and GitHubCopilot to Copilot for simplicity. The old names still work as aliases for backward compatibility.

How it differs from API wrappers

Most of aitools wraps agentic CLI tools - AI assistants that read, understand, and rewrite code - but it also includes PSOpenAI for image/video/audio generation and editing.

API Wrappers (like PSOpenAI)	Agentic CLI Tools (like Claude Code)
Send prompts, receive text/media	Open files, understand code, make edits
You handle file I/O and context	Built-in file management and context
Great for generating new content	Great for refactoring existing code
Excels at image/video/audio generation	Specialized for code editing workflows

PSOpenAI support is included for image editing and generation capabilities that CLI tools don't yet provide.

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How it works

The three-step process

Every aitools operation follows the same pattern:

1. Input - Provide files and a prompt
2. Processing - AI reads, understands, and edits
3. Review - You see diffs and decide to keep or discard

This mirrors manual code review but scales to hundreds of files.

Prompts and context

You can provide:

• Inline prompts: Quick instructions right in the command
• Prompt files: Reusable .md files with detailed instructions
• Context files: Reference docs, style guides, API specifications

Example with all three:

$params = @{
    Path            = "./src/*.ps1"
    PromptFilePath  = "./prompts/api-migration.md"
    ContextFilePath = @(
        "./docs/new-api-spec.md",
        "./docs/style-guide.md"
    )
    Tool            = "Claude"
}
Invoke-AITool @params

The AI reads the prompt for what to do, the context for how to do it, and processes each file accordingly.

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Real-World Examples

Case Study: Modernizing a Windows Module

The BurntToast module wraps Windows notification APIs. When Microsoft updated from Windows 10 to Windows 11 APIs, the module needed refactoring across multiple files.

$params = @{
    Path            = "./burnttoast/*.ps1"
    PromptFilePath  = "./prompts/api-upgrade.md"
    ContextFilePath = @(
        "./docs/windows11-toast-sdk.md",
        "./docs/styleguide.md"
    )
    Tool            = "Claude"
}
Invoke-AITool @params

This handled namespace changes, XML property renames, and layout differences, automatically refactoring the entire module.

Case Study: Updating dbatools.io Blog

The dbatools.io blog needed systematic updates to fix broken links, deprecated commands, outdated screenshots, and stale Twitter embeds. This required judgment, not mechanical find-replace.

Requirements:

• Fix broken links but preserve historical context
• Remove Twitter/X embeds while keeping meaning
• Convert PowerShell screenshots to Hugo shortcodes
• Update deprecated command names
• Consider splatting for readability (but not blindly)
• Maintain author voice and historical accuracy

Solution:

Set-AIToolDefault -Tool Claude
Get-ChildItem *.md | Invoke-AITool -Prompt ./prompts/audit-blog.md

Using a 300-line prompt that encoded all the nuance, Claude processed hundreds of posts, making judgment calls throughout:

• Tested and replaced dead links
• Converted Twitter embeds to paraphrased statements
• Extracted commands from screenshots and converted to shortcodes
• Applied splatting only where it improved clarity
• Updated deprecated references while preserving historical context

This demonstrates what agentic CLIs do well: read complex requirements, maintain context, and exercise judgment at scale.

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Advanced Usage

Working with Images

Image Analysis and Code Generation (Codex, Claude, Gemini)

Vision-capable tools can analyze images and generate code based on visual input:

# Using the -Attachment parameter
Invoke-AITool -Tool Codex -Attachment design.png -Prompt "Create a Hugo website using colors from this design"

# Piping image files directly (Codex treats them as attachments)
Get-ChildItem screenshot.png | Invoke-AITool -Tool Codex -Prompt "What UI framework was used?"

# Other tools treat piped images as regular files for analysis
Get-ChildItem diagram.png | Invoke-AITool -Tool Claude -Prompt "Describe this architecture"

The -Attachment parameter works with common image formats (PNG, JPG, GIF, etc.). Codex automatically treats piped image files as attachments, while other vision-capable tools analyze them as regular files.

Image Editing and Generation (PSOpenAI)

PSOpenAI provides direct image manipulation capabilities that CLI tools don't yet support:

# Install and configure PSOpenAI
Install-AITool -Name PSOPenAI
Initialize-AITool -Tool PSOPenAI
$env:OPENAI_API_KEY = 'sk-your-api-key'

# Edit an existing image
Get-ChildItem C:\images\photo.png |
  Invoke-AITool -Tool PSOPenAI -Prompt "remove the background and add a white sticker border. make transparent. save with descriptive name"

# Generate a new image from text
Invoke-AITool -Tool PSOPenAI -Prompt "A serene mountain landscape at sunset"

Key Differences:

• Codex (and other CLI tools with vision): Analyze images and write code/scripts to manipulate them
• PSOpenAI: Directly edit or generate images through OpenAI's image API endpoints

Authentication: PSOpenAI requires an OpenAI API key. Set $env:OPENAI_API_KEY or run Initialize-AITool -Tool PSOPenAI for configuration instructions.

Extended Thinking / Reasoning

Enable deeper reasoning for supported models (Claude, Aider, Codex, Cursor):

# Claude: triggers extended thinking tokens
Invoke-AITool -Path complex.ps1 -Tool Claude -ReasoningEffort high

# Codex: uses OpenAI's o1/o3 reasoning models
Invoke-AITool -Path complex.ps1 -Tool Codex -ReasoningEffort medium

# Aider: enables reasoning-capable models
Invoke-AITool -Path complex.ps1 -Tool Aider -ReasoningEffort low

Reasoning effort levels: low, medium, high. Best for complex refactoring or architectural changes.

Custom Configuration

# Set default model
Set-AIToolConfig -Tool Claude -Model claude-sonnet-4-5

# Set default reasoning effort
Set-AIToolConfig -Tool Claude -ReasoningEffort medium

# Configure Aider output directory (defaults to temp directory)
Set-AIToolConfig -Tool Aider -AiderOutputDir "C:\MyAiderHistory"

# Update all installed tools
Update-AITool

Aider Output Configuration

By default, Aider generates history and metadata files (.aider.input.history, .aider.chat.history.md, .aider.model.settings.yml, .aider.model.metadata.json, .aiderignore, .env) in your current directory. aitools redirects these to a temporary directory that gets cleaned up automatically.

To preserve Aider's history and metadata files, configure a custom output directory:

Set-AIToolConfig -Tool Aider -AiderOutputDir "C:\AiderHistory"

This keeps all Aider output files in one location instead of cluttering your working directories.

Parallel Processing

By default, when processing 4 or more files, Invoke-AITool runs them in parallel with up to 3 concurrent threads:

# Processes files in parallel (default for 4+ files)
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add error handling"

# Force sequential processing
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add error handling" -NoParallel

# Increase concurrency (may trigger API rate limits)
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add error handling" -MaxThreads 5

Results stream as they complete, providing real-time feedback.

Automatic Retry with Exponential Backoff

Transient errors (timeouts, rate limits, server errors) are automatically retried with delays of 2, 4, 8, 16, 32, 64 minutes until the cumulative delay exceeds 4 hours:

# Default: automatic retry enabled
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Refactor code"

# Disable retry - fail immediately on error
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Refactor code" -DisableRetry

# Customize max retry time (1 hour instead of 4)
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Refactor code" -MaxRetryMinutes 60

Skip Modified Files

Resume interrupted batch operations by skipping files that have already been changed:

# Skip files with uncommitted, staged, or unpushed changes
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add error handling" -SkipModified

# When on main branch, check last 10 commits for modified files
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add error handling" -SkipModified -CommitDepth 10

Useful for resuming after hitting rate limits or fixing errors mid-batch.

Processing Subsets

# Process only the first 5 files
Get-ChildItem tests\*.Tests.ps1 | Invoke-AITool -Prompt "Fix bugs" -First 5

# Skip the first 2 files, process the next 3
Get-ChildItem tests\*.Tests.ps1 | Invoke-AITool -Prompt "Fix bugs" -Skip 2 -First 3

# Process only the last 3 files
Get-ChildItem tests\*.Tests.ps1 | Invoke-AITool -Prompt "Fix bugs" -Last 3

Useful for debugging prompts or testing on a subset before full batch processing.

Rate Limiting

Add delays between file processing to spread API calls over time:

# Wait 10 seconds between each file
Get-ChildItem src\*.ps1 | Invoke-AITool -Prompt "Add docs" -DelaySeconds 10

Helps manage credit usage or avoid aggressive API throttling.

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Demo Walkthrough

The included Jupyter notebook (demo.ipynb) walks through migrating dbatools' 3,500+ Pester tests from v4 to v5. It shows:

1. Setup - Import module, configure defaults, prepare workspace
2. Execution - Open a real test file and run Update-PesterTest
3. Review - Examine structural changes, parameter updates, style enforcement

The demo achieves ~80% automation accuracy, with remaining fixes needed due to legacy code quality. It illustrates how aitools combines PowerShell's predictability with AI's flexible reasoning.

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Contributing

Pull requests are welcome. Please ensure:

• Code follows PowerShell best practices
• All parameter passing uses splatting
• Functions include complete comment-based help
• Changes are tested on Windows, Linux, and macOS
• New tools follow the existing $ToolDefinitions pattern

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Support

• Issues: GitHub Issues
• Module Gallery: PowerShell Gallery