Memory and knowledge · MCP server
Hypermnesic: MCP server, setup and security
Hypermnesic is an open-source MCP server published on GitHub that lets an AI agent store agent memory in Markdown and review changes as Git commits. Its repository has 9 stars and its last commit is from September 27, 2026 and it is licensed under AGPL-3.0.
What Hypermnesic does
According to its repository: “Git-first agent memory: Markdown files are the source of truth, the index is disposable and writes are reviewable commits, with hybrid search and a CLI.”
The Model Context Protocol (MCP) is a standard plug between an AI agent and an outside service: once the server is connected, its tools show up in the agent, which decides when to call them. Hypermnesic is listed under Memory and knowledge, a category of 250 servers in the directory, where it ranks #201 by stars.
Topics declared by the repository: agent-memory, ai-agents, ai-memory, chatgpt, claude, git.
Installing and connecting Hypermnesic
No package or remote server is declared in the official MCP registry: you install it from source, following the repository README.
It works with any MCP-compatible client (Claude Desktop, Claude Code, Cursor, VS Code, Codex and most recent agents). You add one entry to the client's MCP configuration: server name, start command or URL, environment variables. Project language: Python. Listed systems: macOS, Windows, Linux.
Security: what to check
Connecting an MCP server means installing software that talks straight to your agent: it runs with your rights and the model trusts its tool descriptions. The risk therefore depends on what it can touch and how far its code can be trusted.
None of the risk signals we track (system access, secrets, missing licence, abandonment) applies to Hypermnesic. That does not replace reading the code.
Good practice: grant only the rights needed (least privilege), require human approval for irreversible actions, and run the AI agent security check.
Project activity and maintenance
Created on June 1, 2026, the leonardsellem/hypermnesic repository has 9 stars and 1 forks, with 10 open issues. It has more stars than 24% of the servers in the directory. It received changes this month.
Stars measure attention, not quality: a recent, heavily promoted project can collect them fast, while a useful but niche server will have few.
Verdict
Hypermnesic is a reasonable choice; check the points below before connecting it.
Strengths
- Active project: recent commit
Limitations
- Few visible users
- Install from source
Alternatives
- Context763.6K ★
- Basic memory4.3K ★
- Hindsight53.4K ★
- Cognee32.7K ★
- Skill Seekers15.2K ★
- Honcho7.8K ★
Learn more
Frequently asked questions
How do I install Hypermnesic?
No package is declared in the MCP registry: clone the leonardsellem/hypermnesic repository, follow its README, then declare the start command in your client's MCP configuration.
Is Hypermnesic free?
The code is published under the AGPL-3.0 licence and can be used free of charge.
Is Hypermnesic safe?
No risk signal found (system access, secrets, licence, abandonment). As with any MCP server, keep rights minimal and read the code before sensitive use.
Is it an official server?
Nothing says so: it is a project published by leonardsellem on GitHub. Check who maintains it before giving it access.
What are the alternatives to Hypermnesic?
In the same category: Context7, Basic memory, Hindsight, and Cognee. Context7 and Basic memory score higher on our grid.
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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score