MCP Character Count

from typing import Literal, Dict, Any from mcp.server.fastmcp import FastMCP mcp = FastMCP("mcp-charcount") Mode = Literal["chars", "bytes"] @mcp.tool() def count_chars( text: str, mode: Mode = "chars", include_whitespace: bool = True, ) -> Dict[str, Any]: """ Count the length of input text. - mode="chars": Unicode code points count (Python len). - mode="bytes": UTF-8 encoded byte length. - include_whitespace: when False, whitespace characters are filtered out before counting. """ s = text if include_whitespace else "".join(ch for ch in text if not ch.isspace()) if mode == "bytes": count = len(s.encode("utf-8")) elif mode == "chars": count = len(s) else: raise ValueError("Unsupported mode. Use 'chars' or 'bytes'.") return { "count": count, "mode": mode, "include_whitespace": include_whitespace, } """MCP server definition. Run via: uv run src/mcp_charcount/server.py """ if __name__ == "__main__": # Initialize and run the server mcp.run(transport='stdio')