Sandbox API MCP Server - install, status & alternatives [2026]

01 · Install Sandbox API

before you install - you'll need

Set SANDBOXAPI_API_KEY before connecting. MCP_API_KEY is optional or environment-specific per the README.

Claude Code

claude mcp add sandboxapi-sandboxapi-mcp --transport http https://mcp.sandboxapi.dev/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "sandboxapi-sandboxapi-mcp": {
      "url": "https://mcp.sandboxapi.dev/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp.sandboxapi.dev/mcp

transport: streamable-http

endpoint alive - authentication required · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to mcp.sandboxapi.dev

endpoint auth requires authentication - rejected our unauthenticated MCP initialize

license MIT - declared in the repository

registry registry publisher io.github.MichielDeRuiter is not the repo owner (sandboxapi) - the registry entry was published by someone else

03 · What Sandbox API can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can execute code in a sandboxed container, execute multiple code snippets. Each runs in its own isolated sandbox, and list all supported programming languages with versions and example code. No parameters.

The 3 tools it gives your agent

Extracted from the project's README - what SandboxAPI lets an agent do.

execute_code: - Execute code in a sandboxed container.
execute_batch: - Execute multiple code snippets. Each runs in its own isolated sandbox.
list_languages: - List all supported programming languages with versions and example code. No parameters.

04 · Who maintains Sandbox API

SandboxAPI is maintained by sandboxapi. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/sandboxapi/sandboxapi-mcp
category: other - ranked #843 of 848 actively-maintained other servers as of 2026-08-25.
registry: io.github.MichielDeRuiter/sandboxapi-mcp (active, first published 2026-04-05)

06 · Sandbox API FAQ

Is Sandbox API still maintained?

Yes - as of 2026-08-25, its last commit was 2026-04-05. We re-verify nightly.

What can Sandbox API do?

With this server connected, an agent can execute code in a sandboxed container, execute multiple code snippets. Each runs in its own isolated sandbox, and list all supported programming languages with versions and example code. No parameters.

How do I install Sandbox API?

Run `claude mcp add sandboxapi-sandboxapi-mcp --transport http https://mcp.sandboxapi.dev/mcp`. The README documents 2 environment variables (SANDBOXAPI_API_KEY, MCP_API_KEY) to set first. Set SANDBOXAPI_API_KEY before connecting. MCP_API_KEY is optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Sandbox API require authentication?

Yes - when we probed the endpoint on 2026-08-25, it rejected an unauthenticated MCP initialize; you'll need credentials to connect.

07 · Alternatives to Sandbox API

Alternatives to Sandbox API

Maintained other servers if Sandbox API isn't the fit.

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