mymir

Mymir is open-source project management designed for coding agents. Instead of treating tasks as flat markdown lists, Mymir models a project as a graph: tasks are nodes with typed dependency edges, decisions and execution records are pinned to the tasks they belong to, and acceptance criteria are written when the task is created. When an agent picks up work, it doesn't get the whole project dumped on it. It gets a context bundle scoped to where that task is in its lifecycle. A draft task pulls the spec and prerequisites for planning. A ready task pulls the implementation plan, upstream execution records, and the files involved. Once the task is closed, the execution record (what was built, what was decided, which files changed) becomes context for everything downstream. Mymir works for individuals and teams. Multiple people can collaborate on the same project across sessions: one person refines the scope, another picks up the planning, an agent does the implementation, the project state is shared throughout. The web UI offers both a Structure view (task list and detail) and a Graph view (the project as a network you can navigate). Ships as MCP plugins for Claude Code, Codex, and Gemini, plus a browser-based UI. Self-hosted, AGPL licensed, runs on Postgres. Hosted version planned. Best for: solo developers and engineering teams using coding agents (Claude Code, Codex, Gemini) on real projects, who want the agent to operate on structured project knowledge instead of rediscovering context every session.