linshenkx/prompt-optimizer

What is it?

Key features

• 01One-click prompt optimization with multi-round iterative improvement
• 02Supports both system prompt and user prompt optimization
• 03Analysis, single-result evaluation, and multi-result compare evaluation
• 04Connects to OpenAI, Gemini, DeepSeek, Grok, Zhipu AI, SiliconFlow and other models, plus custom OpenAI-compatible APIs
• 05Text-to-image, image-to-image, and multi-image generation
• 06Exposes optimization tools through an MCP server at /mcp

Use cases

• Improving prompts for a small or cheap model so its answers become more specific and structured
• Comparing two prompt versions side by side to confirm which one performs better
• Maintaining a library of tested prompt templates with variables and version history
• Running a self-hosted prompt tool on a private server with password protection

Quick start

1. 1

   Use the online version (no install needed)

2. 2

   Run the Docker container with default settings

   docker run -d -p 8081:80 --restart unless-stopped --name prompt-optimizer linshen/prompt-optimizer
3. 3

   Install the Chrome extension from the Chrome Web Store

Things to know

• !License is AGPL-3.0 per the README badge, though the metadata shows an unrecognized license, so check LICENSE before commercial use.
• !Online and browser use stores app data in the browser and sends requests directly to model providers, so you must supply your own working API keys.
• !Desktop app is recommended for connecting to local services like Ollama because browser CORS limits apply to web and extension use.

Topics

FAQ

What is prompt-optimizer?

An AI prompt optimizer that refines prompts, tests and compares their outputs, and saves them as reusable assets, available as web, desktop, Chrome extension, and Docker. Prompt Optimizer helps users write better AI prompts and improve the quality of model outputs. Prompts can be written manually, taken from templates, imported from local files, or pulled from Prompt Garden, then optimized in one click with multi-round iteration.

Is prompt-optimizer free to use? What license does it have?

prompt-optimizer is open source under the Other license. Check the license terms before using it in commercial products.

Is prompt-optimizer still maintained?

Actively maintained. The last commit to prompt-optimizer was on Oct 19, 2026.

What can I use prompt-optimizer for?

Improving prompts for a small or cheap model so its answers become more specific and structured Comparing two prompt versions side by side to confirm which one performs better Maintaining a library of tested prompt templates with variables and version history Running a self-hosted prompt tool on a private server with password protection

How do I install prompt-optimizer?

Use the online version (no install needed) Run the Docker container with default settings: docker run -d -p 8081:80 --restart unless-stopped --name prompt-optimizer linshen/prompt-optimizer Install the Chrome extension from the Chrome Web Store

Where can I get prompt-optimizer?

The source code and installation instructions are on GitHub: https://github.com/linshenkx/prompt-optimizer