Otter is a self-hosted, local-first AI coding agent and engineering intelligence tool that helps developers understand, explain, plan, review, and change codebases safely. Import a GitHub repository to analyze its architecture, entry points, dependencies, and tech stack before making changes. Ask questions about your codebase with file-grounded AI answers, generate implementation plans with risks and verification steps, review diffs, and approve patches before they are written or turned into pull requests.

Otter supports local AI models through Ollama and OpenAI-compatible LLM endpoints, giving developers control over their code and data. Use Otter through its web UI, CLI, or MCP server.

Built for developers who want a transparent, self-hosted alternative to cloud-based AI coding agents and coding assistants.

Open source, self-hosted AI coding assistant for GitHub repositories, codebase analysis, AI code review, code planning, local LLMs, Ollama, CLI, MCP, and approval-gated coding.