Momento MCP Server

A simple Model Context Protocol (MCP) server implementation for Momento Cache.

Available on npmjs as @gomomento/mcp-momento

Tools

• get

  • Get the cache value stored for the given key.

  • Inputs:

    • key string -- the key to look up in the cache.

    • cacheName string -- the name cache where the key presides (optional)

  • Returns:

    • Hit with the found value if the key was found.

    • Miss if the key was not found.

    • Error if the request failed.

• set

  • Sets the value in cache with a given Time To Live (TTL) seconds. If a value for this key is already present, it will be replaced by the new value regardless of the previous value's data type.

  • Inputs:

    • key: string -- the key to set in the cache

    • value: string -- the value to set for the given key

    • ttl: integer -- the number of seconds to keep this value in the cache (optional)

    • cacheName: string -- the name of the cache to store the key in (optional)

  • Returns:

    • Success if the key was successfully written to the cache.

    • Error if the request failed.

• list-caches

  • Lists the names of all the caches in your Momento account.

  • Inputs:

    • (none)

  • Returns:

    • Success with a comma separated list of cache names

    • Error if the request failed

• create-cache

  • Creates a new cache in your Momento account

  • Inputs:

    • name: string - the name of the cache to create

  • Returns:

    • Success if the cache was successfully created

    • Error if the request failed

• delete-cache

  • Deletes a cache from your Momento account

  • Inputs:

    • name: string - the name of the cache to delete

  • Returns:

    • Success if the cache was successfully deleted

    • Error if the request failed

Quickstart

1. Get a Momento API key from the Momento Console. Note - to run control plane tools (list-caches, create-cache, delete-cache), you must use a super user API key.

2. Set environment variables to configure the cache name and Time To Live (TTL) for items in the cache.

   # required
   export MOMENTO_API_KEY="your-api-key"
   
   # optional
   export MOMENTO_CACHE_NAME="your-cache-name"
   export DEFAULT_TTL_SECONDS=60

If you do not set these values, it will use mcp-momento as the cache name and 60 seconds for the default time to live.

Usage with MCP Inspector

npx -y @modelcontextprotocol/inspector npx @gomomento/mcp-momento@latest

Usage with NPX on Claude Desktop

Note: if you're using nodenv, replace the plain npx with the path to your npx binary (e.g. /Users/username/.nodenv/shims/npx).

{
  "mcpServers": {
    "momento": {
      "command": "npx",
      "args": [
        "-y",
        "@gomomento/mcp-momento"
      ],
      "env": {
        "MOMENTO_API_KEY": "your-api-key",
        "MOMENTO_CACHE_NAME": "your-cache-name",
        "DEFAULT_TTL_SECONDS": 60
      }
    }
  }
}

Setup for local development

1. Install dependencies:

   npm install

2. Build the server:

   npm run build

3. Run with MCP Inspector

   export MOMENTO_API_KEY="your-api-key"
   npx @modelcontextprotocol/inspector node dist/index.js