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app.potto/potto-japan

Official registry Data and databases

Authoritative JLPT-graded Japanese dataset (kanji, vocab, grammar, history) via MCP and REST.

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 potto-japan 'https://potto.app/mcp' --header 'Authorization: <Bearer potto_ak_… API key from https://potto.app/developers/. Optional here because MCP clients can instead sign in via OAuth (the server issues a 401 + WWW-Authenticate challenge, RFC 9728). Free sample data is available on the REST API.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "potto-japan": {
            "type": "http",
            "url": "https://potto.app/mcp",
            "headers": {
                "Authorization": "<Bearer potto_ak_… API key from https://potto.app/developers/. Optional here because MCP clients can instead sign in via OAuth (the server issues a 401 + WWW-Authenticate challenge, RFC 9728). Free sample data is available on the REST API.>"
            }
        }
    }
}

Frequently asked questions

What is app.potto/potto-japan?

Authoritative JLPT-graded Japanese dataset (kanji, vocab, grammar, history) via MCP and REST.

How do I install app.potto/potto-japan?

It runs as a remote server. In Claude Code: claude mcp add --transport http potto-japan 'https://potto.app/mcp' --header 'Authorization: <Bearer potto_ak_… API key from https://potto.app/developers/. Optional here because MCP clients can instead sign in via OAuth (the server issues a 401 + WWW-Authenticate challenge, RFC 9728). Free sample data is available on the REST API.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does app.potto/potto-japan need an API key?

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

Who maintains app.potto/potto-japan?

It is published by app.potto. 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.