ZenMemory (Solana) MCP server

Provides a bridge between personal memory storage and Solana blockchain for storing, validating, and retrieving memory blocks with emotional context and tags, enabling trusted verification and persistence.
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Setup instructions
Provider
ZenMemoryAI
Release date
Apr 18, 2025
Language
TypeScript
Stats
5 stars

ZenMemory MCP Server provides decentralized AI memory infrastructure powered by Model Context Protocol and Solana Agent Kit, enabling you to store and retrieve memory contexts through a simple API with blockchain integration.

Prerequisites

  • Node.js >=16
  • Yarn or npm
  • A Solana keypair secret in environment

Installation

Clone the repository and install dependencies:

git clone https://github.com/ZenMemoryAI/zenmemory-mcp-sol.git
cd zenmemory-mcp-sol
npm install

Configuration

Set up your environment by creating a .env file with your Solana keypair:

SOLANA_SECRET_KEY=your_base58_encoded_private_key

Usage

Starting the Server

Run the server using:

npm start

The server will start and listen for incoming connections on the default port.

API Endpoints

The MCP Server exposes the following HTTP endpoints:

Store Memory

POST /memory

Request body example:

{
  "userId": "user123",
  "content": "This is a memory to be stored",
  "metadata": {
    "tags": ["important", "reminder"]
  }
}

Retrieve Memory by ID

GET /memory/:id

Replace :id with the memory identifier returned when storing a memory.

Get User Memories

GET /user/:userId/memories

Replace :userId with the user's unique identifier to retrieve all their memories.

Storage Options

ZenMemory MCP Server supports:

  • In-memory storage (default)
  • Pluggable database connectors
  • IPFS storage

To configure a specific storage option, update the server configuration in your code or environment variables according to your needs.

Troubleshooting

Common Issues

  • Connection errors: Ensure your Solana keypair is correctly formatted and has sufficient balance
  • Memory not stored: Verify your POST request format matches the expected schema
  • Retrieval problems: Check that you're using the correct memory ID or user ID in your requests

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "zenmemory-mcp-sol" '{"command":"npx","args":["-y","zenmemory-mcp-sol"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "zenmemory-mcp-sol": {
            "command": "npx",
            "args": [
                "-y",
                "zenmemory-mcp-sol"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • Windows: %APPDATA%\Claude\claude_desktop_config.json
  • Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "zenmemory-mcp-sol": {
            "command": "npx",
            "args": [
                "-y",
                "zenmemory-mcp-sol"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect

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