Acheron MCP server: MCP server, setup and security

What Acheron MCP server does

According to its repository: “Persistent memory shared across Claude Chat, Code and Cowork, stored in local SQLite with full-text search.”

An MCP server gives an AI agent extra tools it calls during the conversation: the agent reads their description, decides to use them and gets the result back. Acheron MCP server is listed under Memory and knowledge, a category of 250 servers in the directory, where it ranks #211 by stars.

Installing and connecting Acheron MCP server

No package or remote server is declared in the official MCP registry: you install it from source, following the repository README.

Like any MCP server, you declare it in your client's configuration (Claude Desktop, Claude Code, Cursor, VS Code, Codex…): a name, the command that starts it or its URL, and any environment variables. The client then starts it and lists its tools. Project language: TypeScript.

Security: what to check

An MCP server runs code with the rights you give it, and the model reads its tool descriptions: a malicious or compromised server can hijack the agent. Read the code, or pick a maintained and widely used server, before connecting it.

None of the risk signals we track (system access, secrets, missing licence, abandonment) applies to Acheron MCP server. 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 March 20, 2026, the timmx7/acheron-mcp-server repository has 7 stars and 0 forks, with 0 open issues. It has more stars than 19% of the servers in the directory. Last change 7 months ago.

Stars measure attention, not quality: a recent, heavily promoted project can collect them fast, while a useful but niche server will have few.