A beautiful home for durable markdown context

Keep the markdown behind your AI agents readable, organized, and fully yours.

Download for macOS Local-first. No account required for the core workspace.
Built for workflows using
Claude Code Cursor Codex OpenClaw OpenCode
Mantle showing a product architecture markdown document

Own the context layer

Keep the files behind your work usable across tools, over time, and on your terms.

01

Own your context

Keep long-term knowledge in plain markdown files on disk, not trapped in a proprietary app or locked behind a tool.

02

Keep it human-readable

Specs, notes, and plans should stay clean, legible, and easy to maintain as they get reused across tools and workflows.

03

Trust it as it evolves

History, recovery, and honest handling of external changes help your context stay trustworthy over time.

For the files your work depends on

From specs and engineering docs to CLAUDE.md, meeting notes, and everything in between.

A design principles markdown document in Mantle

Product specs

Requirements, feature briefs, and decisions that need to stay readable and current across teams.

Technical docs

System designs, ADRs, and technical references that need to stay legible beyond any single sprint.

Agent instructions and context

Files like CLAUDE.md, project conventions, and markdown context that help agents work the right way.

Notes, plans, and project memory

Meeting notes, status logs, and accumulated knowledge that keep a project coherent over time.

Plain markdown and agent agnostic.

No proprietary format. No lock-in. Nothing between you and your files.

Give your markdown a better home

Local-first, plain markdown, and built for the files your work depends on.

Download for macOS Local-first. No account required for the core workspace.