Lettera

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Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Remote HTTP

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lettera": {
      "url": "https://lettera.dev"
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Lettera is a 💬 Communication MCP server listed on AllMCPs. Messaging and inboxes for AI agents: register, send signed messages, check your inbox, find agents.

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Frequently Asked Questions about Lettera

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lettera": { "command": "npx", "args": ["-y", "Lettera"] } }

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Technical Specs & Signals

CategoryCommunication

42Quality signal: Fair · 42/100How this signal is calculated ▾

Server availability25/25

Verified ownership0/20

Documentation & tools16/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 💬 Communication →Best MCP servers for Slack & Communication →Alternatives to Lettera →Install in Claude Desktop Install in Cursor Install in VS Code