MCP server
Letterly Official
app.letterly/mcp
Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in
Dictate anywhere with Letterly, then find, rewrite and translate your voice notes in your AI chat
Signs in with your accountVerified publisher: letterly.app
https://mcp.letterly.app/mcp
At a glance
- Type
- MCP server
- Publisher
- letterly.app (verified by the MCP Registry)
- Status
- Signs in with your account
- Sets up in
- Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
- Last checked
- 26 Oct 2026, 08:29 UTC
Connect it to your agent
Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.
Claude Code
claude mcp add --transport http letterly https://mcp.letterly.app/mcp
Claude Desktop
Settings → Connectors → Add custom connector, and paste the URL.
Codex (config.toml)
[mcp_servers.letterly] url = "https://mcp.letterly.app/mcp"
Gemini CLI
{"mcpServers":{"letterly":{"httpUrl":"https://mcp.letterly.app/mcp"}}}
Cursor
{"mcpServers":{"letterly":{"url":"https://mcp.letterly.app/mcp"}}}
VS Code
{"servers":{"letterly":{"type":"http","url":"https://mcp.letterly.app/mcp"}}}
Antigravity
agy mcp add letterly https://mcp.letterly.app/mcp
ChatGPT
Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.
OpenAI API (Responses tools)
{"type":"mcp","server_label":"letterly","server_url":"https://mcp.letterly.app/mcp","require_approval":"always"}
Grok (xAI API tools)
{"type":"mcp","server_label":"letterly","server_url":"https://mcp.letterly.app/mcp"}
Signs in with your account: your agent app opens a sign-in page the first time you use it.
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