For Claude Code and Claude Desktop · macOS
One project, one folder on your Mac. Hipokamp keeps the memory Claude reads, its sessions, your notes, your databases and your posts there. And every file stays a plain .md.
Full trial, no credit card. No subscription, no account, no cloud.
Claude produces a lot: code, plans, articles, decisions. Hipokamp puts each of them in the right place and hands them back to Claude when it needs them.
Each project has its Cortex: a condensed memory of about 5,000 tokens that Claude reads before the raw notes. It only loads the current project, so you don't pay tokens for the rest.
The comfort of Notion, on Markdown. A file you haven't touched is written back byte for byte: that is a blocking test in the project, not a promise.
.md file.One calendar per project, with the editorial strategy Claude reads before writing. Claude drafts the post, you approve it, your tool publishes it.
And in the same place: each project's characters, design system, GitHub repositories and skills.
We don't run one, and you don't create an account. Hipokamp works on your folders and your macOS Keychain.
.env file.get_api_key tool reads a value, when you ask for it..md files you can open anywhere.A perpetual license instead of a subscription: the app runs on your Mac and has no server to pay for.
Launch price
€39 incl. VAT, one time
Regular price afterwards: €49.
Drag the app into Applications and open it: the assistant finds your Claude Code projects and connects Claude.
The app, with the MCP server and the Claude Desktop extension already inside. .dmg file.
The hipokamp.mcpb file, to reinstall the extension without the assistant. Requires the app.
macOS 14 Sonoma or later · Apple Silicon Mac (on Intel, Node must be installed) · Claude Desktop and/or Claude Code · App interface in French for now.
The assistant adds Hipokamp to Claude Code with one command (claude mcp add hipokamp), for all your folders. At the start of a session, Claude activates the relevant project and reads its Cortex; your sessions show up in the project, readable and exportable as notes.
The assistant installs the hipokamp.mcpb extension; you then enable it in Claude Desktop's settings. Claude can list your projects, read the memory, save a document or summarize the conversation into the project.
For advanced users, yes. The MCP server can also speak HTTP, but ChatGPT requires a public HTTPS address, so you need a tunnel to your Mac. Hipokamp is built for Claude first, and that's where everything is tested.
Nothing to do. Hipokamp reads the same ~/.vault-mcp folder and the same Keychain: your profiles become projects and memory.md becomes cortex.md on first launch. The v1 file keeps being written as a mirror, and ClaudeVault v1 stays free and open source.
The app checks for them and offers to install them. One year of updates is included; after that, your version keeps working, and you can extend updates for €29 a year if you want.
Yes: email alexandre@baair.solutions within 14 days of purchase, no questions asked. Lemon Squeezy refunds the payment method you used. The free 14-day trial is still the best way to decide before paying.
No. Projects are folders on your disk, secrets are in the macOS Keychain. The app only goes online to activate the license and check for updates, plus the services you choose to connect.
Names, never values. A value is only read if you explicitly ask for get_api_key.
Nothing is lost: without a license the app becomes read-only, and your .md files still open in any editor.
No, it's inside the app. It is built for Apple Silicon; on an Intel Mac, the app uses the system's Node if there is one.
No. Hipokamp is an independent product by BAAIR that talks to Claude over the MCP protocol.