# Plandex AI Coding Agent for Large Projects > Plandex is an open-source terminal-based AI coding agent designed for large projects and complex tasks. It handles up to 2M tokens of context, uses a diff sandbox for safe changes, and supports multi-model workflows across Anthropic, OpenAI, and Google providers. - Skill: `agentskillexchange/plandex-ai-coding-agent-for-large-projects` (Agent Skill) - Install (CLI): `npx skillmds@latest add agentskillexchange/plandex-ai-coding-agent-for-large-projects` - Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/plandex-ai-coding-agent-for-large-projects/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: agentskillexchange (https://skillmd.com/u/agentskillexchange) - Updated: 2026-09-08 - Page: https://skillmd.com/skills/agentskillexchange/plandex-ai-coding-agent-for-large-projects --- # Plandex AI Coding Agent for Large Projects Plandex is an open-source terminal-based AI coding agent designed for large projects and complex tasks. It handles up to 2M tokens of context, uses a diff sandbox for safe changes, and supports multi-model workflows across Anthropic, OpenAI, and Google providers. ## Installation Requirements and caveats from upstream: - | **Self-hosted/Local Mode** | • Run Plandex locally with Docker or host on your own server.
• Use your own [OpenRouter.ai](https://openrouter.ai) key (or [other model provider](https://docs.plandex.ai/models/mode... - 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. Basic usage or getting-started notes: - 🧑‍💻 **REPL mode** with fuzzy auto-complete for commands and file loading. Just run plandex in any project to get started. - Plandex Browser Debugging Example - bash - Source: https://github.com/plandex-ai/plandex - Extracted from upstream docs: https://raw.githubusercontent.com/plandex-ai/plandex/HEAD/README.md ## Source - [Agent Skill Exchange](https://agentskillexchange.com/skills/plandex-ai-coding-agent-large-projects/)