Cal

Cal Server is a lightweight mathematical expression calculation MCP server built on the FastMCP framework using the Bun runtime. It parses and evaluates user-inputted math expressions via the expr-eval library, communicating through standard input/output (stdio). It supports basic arithmetic, complex expressions, and built-in constants such as PI and E. It also provides timestamp conversion utilities, including single and batch timestamp-to-date formatting and a tool to retrieve the current timestamp.