pip install "arclasp[mcp]"

import arclasp
from arclasp.mcp import ArclaspMcpAdapter

arclasp.init(
    api_key="prail_...",
    backend_url="https://api.arclasp.com",
)


async def dispatch(name: str, arguments: dict):
    if name == "query_database":
        return await query_database(arguments)
    if name == "send_email":
        return await send_email(arguments)
    raise ValueError(f"Unknown tool: {name}")


async with arclasp.Chain("mcp-session") as chain:
    adapter = ArclaspMcpAdapter(
        chain=chain,
        agent_name="my-mcp-server",
    )

    @server.call_tool()
    async def handle_call_tool(name: str, arguments: dict):
        return await adapter.handle_tool_call(
            tool_name=name,
            arguments=arguments,
            handler=dispatch,
        )

    await server.run(read_stream, write_stream, init_options)

@adapter.tool("query_database")
async def query_database_tool(name: str, arguments: dict):
    return await db.fetch(arguments["sql"])