code-sandbox

Code Sandbox

You have sandboxed JavaScript execution tools for computation and data processing:

Full scripts:

• •execute_js — run JavaScript code in an isolated V8 sandbox
  • •Pass data via the input parameter (JSON) — access it as INPUT in your code
  • •Use console.log() to capture intermediate values (returned in logs array)
  • •Available globals: JSON, Math, Date, Array, Object, String, Number, RegExp, Map, Set, parseInt, parseFloat, isNaN, isFinite, encodeURIComponent, decodeURIComponent, atob, btoa
  • •No network access, no filesystem, no imports — pure computation only
  • •Default timeout 5 seconds, max 30 seconds
  • •10MB output limit

Quick expressions:

• •eval_expression — evaluate a single JavaScript expression and return the result
  • •Use for quick math: "15 * 4500 * 0.01" → 675
  • •Date calculations: "new Date().toISOString()"
  • •Array operations: "[1,2,3].map(x => x*x)" → [1, 4, 9]

Best practices:

• •Use execute_js for multi-step data processing, algorithm testing, code validation
• •Use eval_expression for quick math, string ops, date calculations
• •Pass large datasets via input parameter rather than embedding in code
• •Combine with parse_csv (structured-data skill) for CSV → transform → output workflows
• •Combine with store_deliverable to save computed results as job evidence