Letter AI MCP server

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Category: Dev tools

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Source: official MCP Registry entry io.github.tractatus-ai/letter

Direct MCP URL and setup

CLAUDE CODE

claude mcp add --transport http io-github-tractatus-ai-letter https://api.letter.ai/v1/mcp

CURSOR / VS CODE (mcp.json)

{ "mcpServers": { "io-github-tractatus-ai-letter": { "url": "https://api.letter.ai/v1/mcp" } } }