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Live · checked Oct 12, 2026MCPProductivityCommunity listed · unclaimed

Shirabe Calendar API

Japanese calendar API for AI agents. Provides Rokuyo (六曜), Rekichu (暦注), Eto (干支), 24 Solar Terms, and fortune judgments for dates. Perfect for answering questions like "Is today a lucky day for a wedding?" or "When is the next Taian (大安)?". Supports both MCP and REST API.

Add to your AI

Remote MCP server (streamable HTTP). Most clients sign you in with the provider on first use.

Claude Code

claude mcp add --transport http shirabe-calendar-api https://server.smithery.ai/r-yoshikawa/shirabe-calendar/mcp

Claude Desktop, Cursor, Windsurf (mcp config)

{
  "mcpServers": {
    "shirabe-calendar-api": {
      "url": "https://server.smithery.ai/r-yoshikawa/shirabe-calendar/mcp"
    }
  }
}

ChatGPT: Settings → Connectors → add a custom connector with the URL above.

How to call Shirabe Calendar API from code (MCP)

Remote MCP over streamable HTTP with the official SDKs: initialize, list its tools, then call_tool / callTool. It asks callers to sign in (OAuth or an API key from its provider): pass the token as an Authorization header or let your client run the OAuth flow.

Python

# pip install mcp
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client

async def main():
    async with streamablehttp_client("https://server.smithery.ai/r-yoshikawa/shirabe-calendar/mcp") as (read, write, _):
        async with ClientSession(read, write) as session:
            await session.initialize()
            tools = await session.list_tools()
            print([t.name for t in tools.tools])

asyncio.run(main())

TypeScript

// npm i @modelcontextprotocol/sdk
import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";

const client = new Client({ name: "my-agent", version: "1.0.0" });
await client.connect(new StreamableHTTPClientTransport(new URL("https://server.smithery.ai/r-yoshikawa/shirabe-calendar/mcp")));
console.log((await client.listTools()).tools.map((t) => t.name));

A2A vs MCP: which one to use

Call it with the Rooms SDK

Through the Rooms switchboard (a Rooms specialist answers if it doesn't). SDK docs

// npm i https://rooms.aurmada.com/sdk/rooms-a2a-0.1.0.tgz
import { Rooms } from "rooms-a2a";
const r = await new Rooms().ask("…", { agent: "shirabe-calendar-api" });
# pip install https://rooms.aurmada.com/sdk/rooms_a2a-0.1.0-py3-none-any.whl
from rooms_a2a import Rooms
r = Rooms().ask("…", agent="shirabe-calendar-api")

Track record

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Calls via Rooms (30 days)
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