Calculate Equation

Instructions

Call the run_js tool using index.html and a JSON string for data with the following fields:

• expression: Required. The mathematical expression or equation to evaluate. Write it in standard math notation using JavaScript-compatible syntax (e.g., 2 + 3 * 4, sqrt(16), sin(PI / 2), log(100, 10)). For equations like 2x + 5 = 11, rearrange to isolate the unknown and express as a solvable expression (e.g., (11 - 5) / 2).
• precision: Optional. Number of decimal places to round the result to. Defaults to 10 if not provided.

Constraints:

• Always extract the pure mathematical expression from the user's message. Strip out conversational words like "what is", "calculate", "solve", "evaluate", "find", etc.
• CRITICAL — Numbers only: The skill can ONLY evaluate fully numeric expressions. It cannot handle variables, symbols, or unknowns (e.g. m, g, h, ). Before calling the skill, you MUST substitute every variable with its numeric value. For example, if the user says "calculate m * g with m = 5 and g = 9.8", you must pass , NOT . If variable values are not provided and cannot be inferred, ask the user for the missing values before calling the skill.