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Letterly

Official registry Media and design

Dictate anywhere with Letterly, then find, rewrite and translate your voice notes in your AI chat

Source code Website Documentation

What can you do with Letterly?

  • search and read your voice notes
  • create, edit and delete notes
  • rewrite a note in another style or translate it
  • manage your custom rewrite prompts

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http letterly 'https://mcp.letterly.app/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "letterly": {
            "type": "http",
            "url": "https://mcp.letterly.app/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Letterly MCP Server
  2. What it does
  3. Setup
  4. Example prompts
  5. Links

Letterly MCP Server

Dictate anywhere with Letterly, then find, rewrite and translate your voice notes in your AI chat.

This repository hosts documentation only. Letterly MCP is a hosted remote server, so there is nothing to install or run locally.

What it does

Connect your Letterly account to an AI assistant (GitHub Copilot, Claude, ChatGPT, Cursor and others) and ask it to:

  • search and read your voice notes
  • create, edit and delete notes
  • rewrite a note in another style or translate it
  • manage your custom rewrite prompts

Setup

  • Server URL: https://mcp.letterly.app/mcp
  • Transport: Streamable HTTP
  • Sign-in: OAuth with your Letterly account. You'll be asked to sign in the first time you connect.
VS Code / GitHub Copilot

Add this to .vscode/mcp.json in your workspace (or to your user MCP configuration):

{
  "servers": {
    "letterly": {
      "type": "http",
      "url": "https://mcp.letterly.app/mcp"
    }
  }
}

Then start the server from the MCP view and sign in to Letterly when prompted.

Other clients

In Claude, ChatGPT, Cursor or any other MCP client, add a custom (remote) MCP server with the URL above and sign in when asked.

Example prompts

  • "Find my notes about the marketing plan from last week"
  • "Rewrite my latest note as a short email"
  • "Translate my note about the trip into German"

Frequently asked questions

What is Letterly?

Dictate anywhere with Letterly, then find, rewrite and translate your voice notes in your AI chat

How do I install Letterly?

It runs as a remote server. In Claude Code: claude mcp add --transport http letterly 'https://mcp.letterly.app/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Letterly need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Letterly open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Letterly?

It is published by letterlyapp. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.