A
securityF
licenseA
qualityProvides a secure, isolated JavaScript execution environment with configurable time and memory limits for safely running code from Claude.
Last updated -
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Provides a secure JavaScript REPL (Read-Eval-Print-Loop) environment to execute code snippets with error handling, memory management, and output formatting.
Enables secure access to Node.js built-in modules and execution of JavaScript code in a sandboxed VM context with working directory support.
Allows running the REPL directly via npx without installation or installing it globally through npm for repeated usage.
🚀 MCP REPL Executor
🧙♂️ Simplified JavaScript Execution Environment
A streamlined direct Node.js execution environment that enables seamless code execution with full support for:
- ESM Modules - Native import/export syntax
- Dynamic Imports - Full support for await import()
- CommonJS compatibility - Works with require() through createRequire
- Native Node.js API access - Direct access to all Node.js features
🧩 Configuration
For Claude Code:
claude mcp add repl -- "npx" "-y" "mcp-repl"
For Cursor, update your .cursor/mcp.json configuration:
local-only server
The server can only run on the client's local machine because it depends on local resources.
A secure JavaScript REPL server that enables executing code snippets in a sandboxed environment with memory protection, timeout handling, and comprehensive error reporting.
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