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Letterin

Official registry Productivity

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Website

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 letterin 'https://letterin.app/api/mcp' --header 'Authorization: <Bearer <key> — create the key in Letterin under Settings → AI agents (MCP).>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "letterin": {
            "type": "http",
            "url": "https://letterin.app/api/mcp",
            "headers": {
                "Authorization": "<Bearer <key> — create the key in Letterin under Settings → AI agents (MCP).>"
            }
        }
    }
}

Frequently asked questions

What is Letterin?

Tailor a CV to a job posting: score the match, propose a reviewable rewrite, export PDF or Word.

How do I install Letterin?

It runs as a remote server. In Claude Code: claude mcp add --transport http letterin 'https://letterin.app/api/mcp' --header 'Authorization: <Bearer <key> — create the key in Letterin under Settings → AI agents (MCP).>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Letterin need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains Letterin?

It is published by app.letterin. 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.