SandBase Harness

SandBase Harness is a local MCP server: Stdio MCP bridge for SandBase Harness agents, sessions, turns, artifacts, and cancellation. Install it from oci as ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add sandbase-harness -e MANAGED_AGENTS_URL=... -e MANAGED_AGENTS_API_KEY=... -- docker run -i --rm ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .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_API_KEY": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

• Runtime: Docker.
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
• Environment variables: MANAGED_AGENTS_URL, MANAGED_AGENTS_API_KEY