
plandex
Open source AI coding agent. Designed for large projects and real world tasks.
Stars: 11417

Plandex is an open source, terminal-based AI coding engine designed for complex tasks. It uses long-running agents to break up large tasks into smaller subtasks, helping users work through backlogs, navigate unfamiliar technologies, and save time on repetitive tasks. Plandex supports various AI models, including OpenAI, Anthropic Claude, Google Gemini, and more. It allows users to manage context efficiently in the terminal, experiment with different approaches using branches, and review changes before applying them. The tool is platform-independent and runs from a single binary with no dependencies.
README:
💻 Plandex is a terminal-based AI development tool that can plan and execute large coding tasks that span many steps and touch dozens of files. It can handle up to 2M tokens of context directly (~100k per file), and can index directories with 20M tokens or more using tree-sitter project maps.
🔬 A cumulative diff review sandbox keeps AI-generated changes separate from your project files until they are ready to go. Command execution is controlled so you can easily roll back and debug. Plandex helps you get the most out of AI without leaving behind a mess in your project.
🧠 Combine the best models from Anthropic, OpenAI, Google, and open source providers to build entire features and apps with a robust terminal-based workflow.
🚀 Plandex is capable of full autonomy—it can load relevant files, plan and implement changes, execute commands, and automatically debug—but it's also highly flexible and configurable, giving developers fine-grained control and a step-by-step review process when needed.
💪 Plandex is designed to be resilient to large projects and files. If you've found that others tools struggle once your project gets past a certain size or the changes are too complex, give Plandex a shot.
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🐘 2M token effective context window with default model pack. Plandex loads only what's needed for each step.
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🗄️ Reliable in large projects and files. Easily generate, review, revise, and apply changes spanning dozens of files.
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🗺️ Fast project map generation and syntax validation with tree-sitter. Supports 30+ languages.
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💰 Context caching is used across the board for OpenAI and Anthropic models, reducing costs and latency.
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🚦 Configurable autonomy: go from full auto mode to fine-grained control depending on the task.
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🐞 Automated debugging of terminal commands (like builds, linters, tests, deployments, and scripts). If you have Chrome installed, you can also automatically debug browser applications.
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💬 A project-aware chat mode that helps you flesh out ideas before moving to implementation. Also great for asking questions and learning about a codebase.
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🧠 Easily try + combine models from multiple providers. Curated model packs offer different tradeoffs of capability, cost, and speed, as well as open source and provider-specific packs.
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🛡️ Reliable file edits that prioritize correctness. While most edits are quick and cheap, Plandex validates both syntax and logic as needed, with multiple fallback layers when there are problems.
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🔀 Full-fledged version control for every update to the plan, including branches for exploring multiple paths or comparing different models.
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📂 Git integration with commit message generation and optional automatic commits.
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🧑💻 REPL mode with fuzzy auto-complete for commands and file loading. Just run
plandex
in any project to get started. -
🛠️ CLI interface for scripting or piping data into context.
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📦 One-line, zero dependency CLI install. Dockerized local mode for easily self-hosting the server. Cloud-hosting options for extra reliability and convenience.
curl -sL https://plandex.ai/install.sh | bash
Note: Windows is supported via WSL. Plandex only works correctly on Windows in the WSL shell. It doesn't work in the Windows CMD prompt or PowerShell.
Option | Description |
---|---|
Plandex Cloud (Integrated Models) | • No separate accounts or API keys. • Easy multi-device usage. • Centralized billing, budgeting, usage tracking, and cost reporting. • Quickest way to get started. |
Plandex Cloud (BYO API Key) | • Use Plandex Cloud with your own OpenRouter.ai and OpenAI keys. • Get started |
Self-hosted/Local Mode | • Run Plandex locally with Docker or host on your own server. • Use your own OpenRouter.ai and OpenAI keys. • Follow the local-mode quickstart to get started. |
If you're going with a 'BYO API Key' option above (whether cloud or self-hosted), you'll need to set the OPENROUTER_API_KEY
and OPENAI_API_KEY
environment variables before continuing:
export OPENROUTER_API_KEY=...
export OPENAI_API_KEY=...
First, cd
into a project directory where you want to get something done or chat about the project. Make a new directory first with mkdir your-project-dir
if you're starting on a new project.
cd your-project-dir
For a new project, you might also want to initialize a git repo. Plandex doesn't require that your project is in a git repo, but it does integrate well with git if you use it.
git init
Now start the Plandex REPL in your project:
plandex
or for short:
pdx
☁️ If you're using Plandex Cloud, you'll be prompted at this point to start a trial.
Then just give the REPL help text a quick read, and you're ready go. The REPL starts in chat mode by default, which is good for fleshing out ideas before moving to implementation. Once the task is clear, Plandex will prompt you to switch to tell mode to make a detailed plan and start writing code.
Please feel free to give your feedback, ask questions, report a bug, or just hang out:
- Follow @PlandexAI
- Follow @Danenania (Plandex's creator)
- Subscribe on YouTube
⭐️ Please star, fork, explore, and contribute to Plandex. There's a lot of work to do and so much that can be improved.
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