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Knowledge Graph

Provides persistent memory for Claude through a local knowledge graph that stores entities with obse...

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Updated Dec 20, 2025
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Provides persistent memory for Claude through a local knowledge graph that stores entities with observations and relations, enabling structured information retrieval and complex context retention across conversations.
  1. Click the "Install Now" button to open the FastMCP connection / installation interface.
  2. In the FastMCP connection form locate the environment variables (ENV) section.
  3. Add a new ENV with the key: MEMORY_FILE_PATH
  4. For the value enter an absolute path where you want the memory file stored (choose one below that fits your OS):
    • macOS / Linux example: /home/youruser/.fastmcp/memory.jsonl or /path/to/your/memory.jsonl
    • Windows example: C:\Users\youruser\AppData\Local\fastmcp\memory.jsonl
      Use an absolute path (not relative) and replace youruser with your account name.
  5. If you don’t provide a MEMORY_FILE_PATH, the server will default to memory.jsonl in the server’s installation directory.
  6. Before saving, ensure the directory exists and the FastMCP process will have write permission:
    • macOS / Linux: mkdir -p /path/to/your && chmod 700 /path/to/your
    • Windows (PowerShell): New-Item -ItemType Directory -Path "C:\path\to\your" -Force
  7. (Optional) Create an empty memory file now so the server can write to it:
    • macOS / Linux: touch /path/to/your/memory.jsonl
    • Windows (PowerShell): New-Item -ItemType File -Path "C:\path\to\your\memory.jsonl" -Force
  8. Save the FastMCP connection / install configuration and run the install.
  9. Verify the server created or is writing to the file (check the path you set) or inspect the MCP server logs to confirm the memory file is being used.

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