LLM Sandbox vs Prover

In-depth architectural comparison of the LLM Sandbox and Prover MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose LLM Sandbox when:

• You need dedicated capabilities in the Code Execution domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: execute_code, get_supported_languages, get_language_details.

Explore LLM Sandbox Details

Choose Prover when:

• You need dedicated capabilities in the Code Execution domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: lean4_build, lean4_prove_theorems, lean4_get_job_status.

Explore Prover Details

Feature & Specification Comparison

Specification	LLM Sandbox Code Execution	Prover Code Execution
Summary	Securely run LLM-generated code in isolated containers across 7 languages and 4 backends.	Lean 4 MCP server: compile, prove theorems, and formalize math with Mathlib.
Category & Scope	Code Execution	Code Execution
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "llm-sandbox": {
      "command": "uvx",
      "args": [
        "llm-sandbox"
      ]
    }
  }
}

{
  "mcpServers": {
    "prover": {
      "url": "https://prover.axiomatic-ai.com/mcp/"
    }
  }
}

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