Prompt Refiner Pranav Peshwe

ai cli copilot llm prompt-engineering winforms

Use this command to install Prompt Refiner with WinGet:

winget install --id=PranavPeshwe.PromptRefiner -e

Prompt Refiner is a lightweight Windows desktop application designed to enhance and refine user prompts by leveraging large language models (LLMs) via the GitHub Copilot SDK. It provides a streamlined tool for users to input a basic prompt, process it through an LLM, and receive a polished, comprehensive version.

Key Features:

Real-time streaming output: View refined prompts as they are generated in real time.
Dynamic model selection: Choose from available models to best suit your needs.
Headless CLI support: Operate seamlessly in scriptable environments or pipelines.
Debug mode: Troubleshoot issues without exposing sensitive data.
Copy-able error dialogs: Access detailed error information for easier troubleshooting.

Audience & Benefit: Ideal for developers, technical writers, educators, and anyone working with AI-driven tools. Prompt Refiner helps users generate more precise, effective prompts quickly, saving time and improving outcomes in prompt-based workflows. It can be installed via winget for convenient setup.

Prompt Refiner

A lightweight Windows desktop application (.NET 8, WinForms) that takes a rough prompt, sends it to a large language model via the GitHub Copilot SDK, and returns a polished, comprehensive version. Supports both a graphical interface and a headless CLI.

Prompt Refiner — Main Window

Supported Platforms

Platform	Status
Windows 10/11 (x64)	✅ Supported
macOS	❌ Not supported (WinForms)
Linux	❌ Not supported (WinForms)

Prerequisites

Before using Prompt Refiner, ensure you have:

GitHub Copilot CLI — installed and available on PATH.

# Install via npm
npm install -g @anthropic-ai/sdk
# Or via the GitHub CLI extension
gh extension install github/gh-copilot

Active GitHub Copilot subscription — any tier (Free, Individual, Business, Enterprise). The SDK bills against your Copilot premium request quota.
Authentication — sign in once before first use:
```
gh auth login
```
The app auto-discovers credentials from (in order): COPILOT_GITHUB_TOKEN, GH_TOKEN, GITHUB_TOKEN environment variables, or the Copilot CLI's cached login.
Runtime (only if building from source):
- .NET 8.0 SDK or later.
- The self-contained release zip requires no runtime installation.

Installation

Download the latest PromptRefiner-win-x64.zip from Releases, extract anywhere, and run PromptRefiner.exe.

No installer is needed — it's a single self-contained executable.

Verify Prerequisites

After extracting, run the built-in prerequisite checker:

PromptRefiner.exe --check-prereqs

This verifies the GitHub Copilot CLI and GitHub CLI are installed and checks for auth tokens.

Usage

GUI Mode

Double-click PromptRefiner.exe (or run it with no arguments):

Type or paste a rough prompt into the input area.
Select a model from the dropdown (default: claude-opus-4.6). The list is fetched live from Copilot on startup.
Click Refine ➜ (or press Ctrl+Enter).
A streaming output window opens showing the refined prompt in real time.
Edit the result if needed, then click 📋 Copy to copy to clipboard.

CLI Mode

Run with arguments to operate headlessly — ideal for scripts and pipelines.

# Refine a prompt directly
PromptRefiner.exe -p "write a python script to sort a list"

# Read prompt from a file
PromptRefiner.exe -f prompt.txt

# Pipe from stdin
echo "help me debug my code" | PromptRefiner.exe

# Use a specific model
PromptRefiner.exe -p "design a REST API" -m gpt-4o

# Save output to a file (also prints to stdout)
PromptRefiner.exe -p "explain recursion" -o refined.txt

# List all available models
PromptRefiner.exe --list-models

# Show help
PromptRefiner.exe --help

CLI flags:

Flag	Description
`-p`, `--prompt`	Prompt text to refine
`-f`, `--file`	Read prompt from a file
`-m`, `--model`	Model to use (default: `claude-opus-4.6`)
`-o`, `--output`	Write refined prompt to file
`--list-models`	Print available models and exit
`--check-prereqs`	Verify prerequisites and exit
`-h`, `--help`	Show usage help

Exit codes: 0 = success, 1 = error. Status messages go to stderr; refined output goes to stdout.

Build from Source

git clone https://github.com/PranavPeshwe/prompt-refiner.git
cd prompt-refiner
dotnet build prompter2.sln

Running Tests

# Unit tests only (no network, no auth needed)
.\Run-Tests.ps1 -Filter Unit

# Startup benchmark tests
.\Run-Tests.ps1 -Filter Startup

# Integration tests (requires Copilot auth + subscription)
.\Run-Tests.ps1 -Filter Integration

# All tests
.\Run-Tests.ps1 -Filter All

# Standalone startup measurement (10 iterations with bar graph)
.\Measure-Startup.ps1 -Runs 10

Test Coverage

Category	Tests	Requires Auth
Unit	10	No
Integration	12	Yes
Startup Benchmark	3	No

Project Structure

├── Program.cs                 # Entry point (GUI/CLI routing)
├── MainForm.cs                # Input window (WinForms)
├── ResultForm.cs              # Streaming output window
├── ErrorDialog.cs             # Copy-able error dialog
├── PromptRefinerService.cs    # Copilot SDK wrapper
├── PromptRefiner.csproj       # Project file
├── Run-Tests.ps1              # Test runner script
├── Measure-Startup.ps1        # Startup benchmark script
├── requirements.md            # Detailed requirements document
└── tests/
    └── PromptRefiner.Tests/
        ├── UnitTests.cs
        ├── IntegrationTests.cs
        └── StartupBenchmarkTests.cs

License

Private repository — not licensed for redistribution.

Prompt Refiner

Prompt Refiner — Main Window

Supported Platforms

Platform	Status
Windows 10/11 (x64)	✅ Supported
macOS	❌ Not supported (WinForms)
Linux	❌ Not supported (WinForms)

Prerequisites

Before using Prompt Refiner, ensure you have:

GitHub Copilot CLI — installed and available on PATH.

# Install via npm
npm install -g @anthropic-ai/sdk
# Or via the GitHub CLI extension
gh extension install github/gh-copilot

Active GitHub Copilot subscription — any tier (Free, Individual, Business, Enterprise). The SDK bills against your Copilot premium request quota.
Authentication — sign in once before first use:
```
gh auth login
```
The app auto-discovers credentials from (in order): COPILOT_GITHUB_TOKEN, GH_TOKEN, GITHUB_TOKEN environment variables, or the Copilot CLI's cached login.
Runtime (only if building from source):
- .NET 8.0 SDK or later.
- The self-contained release zip requires no runtime installation.

Installation

Download the latest PromptRefiner-win-x64.zip from Releases, extract anywhere, and run PromptRefiner.exe.

No installer is needed — it's a single self-contained executable.

Verify Prerequisites

After extracting, run the built-in prerequisite checker:

PromptRefiner.exe --check-prereqs

This verifies the GitHub Copilot CLI and GitHub CLI are installed and checks for auth tokens.

Usage

GUI Mode

Double-click PromptRefiner.exe (or run it with no arguments):

Type or paste a rough prompt into the input area.
Select a model from the dropdown (default: claude-opus-4.6). The list is fetched live from Copilot on startup.
Click Refine ➜ (or press Ctrl+Enter).
A streaming output window opens showing the refined prompt in real time.
Edit the result if needed, then click 📋 Copy to copy to clipboard.

CLI Mode

Run with arguments to operate headlessly — ideal for scripts and pipelines.

# Refine a prompt directly
PromptRefiner.exe -p "write a python script to sort a list"

# Read prompt from a file
PromptRefiner.exe -f prompt.txt

# Pipe from stdin
echo "help me debug my code" | PromptRefiner.exe

# Use a specific model
PromptRefiner.exe -p "design a REST API" -m gpt-4o

# Save output to a file (also prints to stdout)
PromptRefiner.exe -p "explain recursion" -o refined.txt

# List all available models
PromptRefiner.exe --list-models

# Show help
PromptRefiner.exe --help

CLI flags:

Flag	Description
`-p`, `--prompt`	Prompt text to refine
`-f`, `--file`	Read prompt from a file
`-m`, `--model`	Model to use (default: `claude-opus-4.6`)
`-o`, `--output`	Write refined prompt to file
`--list-models`	Print available models and exit
`--check-prereqs`	Verify prerequisites and exit
`-h`, `--help`	Show usage help

Exit codes: 0 = success, 1 = error. Status messages go to stderr; refined output goes to stdout.

Build from Source

git clone https://github.com/PranavPeshwe/prompt-refiner.git
cd prompt-refiner
dotnet build prompter2.sln

Running Tests

# Unit tests only (no network, no auth needed)
.\Run-Tests.ps1 -Filter Unit

# Startup benchmark tests
.\Run-Tests.ps1 -Filter Startup

# Integration tests (requires Copilot auth + subscription)
.\Run-Tests.ps1 -Filter Integration

# All tests
.\Run-Tests.ps1 -Filter All

# Standalone startup measurement (10 iterations with bar graph)
.\Measure-Startup.ps1 -Runs 10

Test Coverage

Category	Tests	Requires Auth
Unit	10	No
Integration	12	Yes
Startup Benchmark	3	No

Project Structure

├── Program.cs                 # Entry point (GUI/CLI routing)
├── MainForm.cs                # Input window (WinForms)
├── ResultForm.cs              # Streaming output window
├── ErrorDialog.cs             # Copy-able error dialog
├── PromptRefinerService.cs    # Copilot SDK wrapper
├── PromptRefiner.csproj       # Project file
├── Run-Tests.ps1              # Test runner script
├── Measure-Startup.ps1        # Startup benchmark script
├── requirements.md            # Detailed requirements document
└── tests/
    └── PromptRefiner.Tests/
        ├── UnitTests.cs
        ├── IntegrationTests.cs
        └── StartupBenchmarkTests.cs

License

Private repository — not licensed for redistribution.

Prompt Refiner Pranav Peshwe

README

Prompt Refiner

Supported Platforms

Prerequisites

Installation

Verify Prerequisites

Usage

GUI Mode

CLI Mode

Build from Source

Running Tests

Test Coverage

Project Structure

License

Prompt Refiner Pranav Peshwe

README

Prompt Refiner

Supported Platforms

Prerequisites

Installation

Verify Prerequisites

Usage

GUI Mode

CLI Mode

Build from Source

Running Tests

Test Coverage

Project Structure

License