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yasashii.org MCP Server

answering

yasashii.org is answering right now. Last checked 6 min ago. 10 installs a week from npm. It exposes 4 tools. Last commit 10 Nov 2026.

Human-verified Easy Japanese versions of Japanese administrative and disaster-preparedness info.

Installs per day peak 4 · avg 0 · +10% w/w
a month agotoday
Uptime history 6 hours of history
6 hours agonow
100.0%
Uptime 24h
21 of 21 checks
4
Tools
read from the server
112 ms
Response time
average over 24h
10
Installs / week
npm and PyPI

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 November 2026. No other catalogue keeps this.

10 Nov a tool changed version

Nothing serious here today

Today is the operative word: we check yasashii.org every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add yasashii-org-mcp --transport http https://mcp.yasashii.org/mcp
Settings → Connectors → Add custom connector, then paste this address
https://mcp.yasashii.org/mcp
~/.codex/config.toml
[mcp_servers.yasashii-org-mcp]
url = "https://mcp.yasashii.org/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "yasashii-org-mcp": {
      "url": "https://mcp.yasashii.org/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "yasashii-org-mcp": {
      "type": "http",
      "url": "https://mcp.yasashii.org/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

document
get_document
Get one Easy Japanese document by ID: full Markdown body (with furigana in 《…》 and wakachi-gaki spacing, ready to hand to a reader), plain-Japanese term explanations, human-verified primary-source links (go.jp / e-Gov) and the last_verified date. Use list_documents first to find the ID.
documents
list_documents
List all Easy Japanese (やさしい日本語) documents on yasashii.org — Japanese administrative procedures (転入届, 国民健康保険, 国民年金, マイナンバーカード, 在留期間の更新...) and disaster preparedness (避難所, 119番...). Each has a stable ID, a one-line summary, and a verification tier.
meta
get_meta
Get API metadata for yasashii.org: all endpoints, the oldest verification date across documents, license and attribution.
terms
search_terms
Look up Japanese administrative terms (住民票, 転入届, 保険料, 避難所...) and get their Easy Japanese (やさしい日本語) explanations — plain wording a non-native reader can understand. Matches the term, its reading, or words inside the explanation.

Endpoints

URLTransportStateLatencyChecked
https://mcp.yasashii.org/mcp streamable-http answering 116 ms 6 min ago

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yasashii.org — questions

Answers built from our own checks of this server.

What can yasashii.org do?
It exposes 4 tools, read directly from the server on our last check. Among them: get_document, get_meta, list_documents, search_terms. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is yasashii.org working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 21 of 21 checks got a reply (100.0%), average response time 112 ms. The bar chart above shows every period we have measured.
How do I connect yasashii.org?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does yasashii.org need an API key?
No. yasashii.org completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is yasashii.org?
It answers our handshake in 112 ms on average, which is faster than 91% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use yasashii.org?
The npm package @dror-jp/yasashii-org-mcp was installed 10 times in the last week. Week over week that is +10%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is yasashii.org open source?
We cannot say either way: written in JavaScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.