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SandBase Harness

io.github.sandbaseai/sandbase-harness ยท v0.3.8

Stdio MCP bridge for SandBase Harness agents, sessions, turns, artifacts, and cancellation.

Connect Runs on your machine

Terminal
claude mcp add sandbase-harness -e MANAGED_AGENTS_URL=<MANAGED_AGENTS_URL> -e MANAGED_AGENTS_API_KEY=<MANAGED_AGENTS_API_KEY> -- docker run -i --rm ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8
claude_desktop_config.json
{
  "mcpServers": {
    "sandbase-harness": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "sandbase-harness": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "sandbase-harness": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
MANAGED_AGENTS_URL
Required
URL of the SandBase Harness runtime API.
MANAGED_AGENTS_API_KEY
Optional, secret
API key when the connected Harness runtime requires authentication.

Details

Packageghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8 (OCI, stdio)
First published30 Aug 2026
Last updated30 Aug 2026
Registry nameio.github.sandbaseai/sandbase-harness

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