A secure, sandboxed environment for executing JavaScript code and mathematical expressions within AI agent workflows.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install xpr-code-sandbox
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install xpr-code-sandbox using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Code Sandbox Skill?
The Code Sandbox skill provides a robust and isolated V8 environment designed for safe JavaScript execution. It enables AI agents to perform complex computations, data transformations, and logic validations without risk to the host system. This skill is a core component of the Openclaw Skills ecosystem, ensuring that pure computational tasks are handled efficiently within a controlled perimeter.
By isolating execution, the sandbox prevents unauthorized network or filesystem access, making it the ideal choice for developers who need to process untrusted data or perform heavy numerical analysis. It serves as a high-performance bridge between raw data inputs and structured, actionable results.
Code Sandbox Skill Use Cases
- Performing complex data transformations on JSON datasets.
- Running mathematical simulations and financial calculations.
- Validating and testing JavaScript algorithms or logic snippets.
- Formatting and cleaning string data using regular expressions.
- Integrating with ETL pipelines to transform CSV data into structured JSON.
How Code Sandbox Skill Works
- The agent identifies a need for computation and invokes the Code Sandbox tool.
- Data is passed into the
inputparameter, which is automatically mapped to a global INPUT variable within the sandbox. - The JavaScript code is executed within an isolated V8 VM with a default timeout to ensure system stability.
- Standard output from console commands is captured into a logs array for debugging and transparency.
- The final computed result is returned to the agent to be used in subsequent Openclaw Skills operations.
Code Sandbox Skill Setup
To begin using this skill within your automation framework, simply ensure the package is active in your environment. No complex external dependencies are required as the runtime is self-contained.
# Install the skill to your local environment
openclaw install code-sandbox
Once installed, you can immediately call execute_js or eval_expression from your agent prompts.
Code Sandbox Skill Data Schema & Taxonomy
The skill utilizes a structured interface to maintain compatibility across different Openclaw Skills.
| Property | Type | Description |
|---|---|---|
code |
string | The JavaScript code or expression to execute. |
input |
object | JSON data accessible via the INPUT global variable. |
logs |
array | Captured console.log output from the execution. |
result |
any | The final value returned by the script or expression. |
timeout |
number | Execution limit in milliseconds (max 30,000). |
Code Sandbox Skill Advanced Features
- Multi-step script execution with the
execute_jstool for complex logic. - Lightweight expression evaluation via
eval_expressionfor rapid math and string ops. - Automatic integration with deliverable storage to save computation results as job evidence.
- Strict security headers preventing network access, filesystem writes, and external imports.
- High-capacity output handling with a 10MB limit for large data processing tasks.
SKILL.md
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