Potto Japan is answering right now. Last checked 7 min ago.
Authoritative JLPT-graded Japanese dataset (kanji, vocab, grammar, history) via MCP and REST.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.
claude mcp add potto-japan --transport http https://potto.app/mcp
{
"mcpServers": {
"potto-japan": {
"url": "https://potto.app/mcp"
}
}
}
[mcp_servers.potto-japan]
url = "https://potto.app/mcp"
{
"mcpServers": {
"potto-japan": {
"url": "https://potto.app/mcp"
}
}
}
{
"mcpServers": {
"potto-japan": {
"url": "https://potto.app/mcp"
}
}
}
This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://potto.app/mcp | streamable-http | needs key | 266 ms | 7 min ago |
Answers built from our own checks of this server.