MCPs › Dev tools › Code Sandbox — Execute Python, JS, SQL Safely
Sandboxed code execution API for AI agents. Execute Python, JavaScript, or SQL in an isolated environment. Returns stdout, execution time, and errors. 10-second timeout for safety. Tools: code_execute_sandbox. Use this for running calculations, testing code snippets, data transformations, or SQL queries without needing a local runtime. Safe execution with resource limits. Returns: {stdout, executionTime, errors}. No API key required — x402 micropayment $0.01/call on Base L2.
Not monetized yet
Turn Code Sandbox — Execute Python, JS, SQL Safely’s tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.
Install Code Sandbox — Execute Python, JS, SQL Safely
For anyone using Code Sandbox — Execute Python, JS, SQL Safely — no Lulu account neededclaude mcp add --transport http code-sandbox---execute-python--js--sql-safely https://code-sandbox--axel-belfort.run.tools
9 field-tested tactics as a designed playbook plus skills your coding agent can run. Free.
Get the Kit →FAQ
Run: claude mcp add --transport http code-sandbox---execute-python--js--sql-safely https://code-sandbox--axel-belfort.run.tools
Yes — it’s a remote MCP server, so no local install is needed.
ChatGPT: Settings → Connectors → Advanced → Developer mode → Add connector, then paste https://code-sandbox--axel-belfort.run.tools.
Claude.ai: Settings → Connectors → Add custom connector, then paste the same URL.
Unrated out of 100, computed from cross-registry traction signals (installs, stars, registry presence) — never influenced by sponsorship.
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This is for the person who owns Code Sandbox — Execute Python, JS, SQL Safely — adds Lulu Ads to your own code. Not the install steps above, those are for your users.
Copies a ready prompt: your coding agent installs the lulu-ads SDK, wires the slot, and applies the widget design guide.
or set up manually at getlulu.dev/publishers
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Managed hosting with monetization built in — waitlist.
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