SandBase Harness MCP

A local-first, self-hosted AI agent runtime that serves as an MCP bridge. It manages sandboxed sessions, memory, credentials, and audit trails, allowing agents to run generated code safely in local, Docker, or Kubernetes environments while providing a local Console for inspection.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by sandbaseai

Vendor documentation

What you can do with it

Run generated code safely in sandboxed environments
Inspect long-running agents with persistent sessions
Control tool access via MCP toolsets and permission policies
Operate any model including OpenAI, Anthropic, and DeepSeek

Source and maintenance

Community listingRegistry 0.3.8

mcp-registry: io.github.sandbaseai/sandbase-harness@0.3.8 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8

oci

ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8",
  "registryType": "oci",
  "environmentVariables": [
    {
      "name": "MANAGED_AGENTS_URL",
      "format": "string",
      "isRequired": true,
      "description": "URL of the SandBase Harness runtime API."
    },
    {
      "name": "MANAGED_AGENTS_API_KEY",
      "format": "string",
      "description": "API key when the connected Harness runtime requires authentication."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "sandbase-harness-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MANAGED_AGENTS_URL=<YOUR_MANAGED_AGENTS_URL>",
        "-e",
        "MANAGED_AGENTS_API_KEY=<YOUR_MANAGED_AGENTS_API_KEY>",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<YOUR_MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<YOUR_MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "sandbase-harness-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MANAGED_AGENTS_URL=<YOUR_MANAGED_AGENTS_URL>",
        "-e",
        "MANAGED_AGENTS_API_KEY=<YOUR_MANAGED_AGENTS_API_KEY>",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<YOUR_MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<YOUR_MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "sandbase-harness-mcp": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MANAGED_AGENTS_URL=<YOUR_MANAGED_AGENTS_URL>",
        "-e",
        "MANAGED_AGENTS_API_KEY=<YOUR_MANAGED_AGENTS_API_KEY>",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<YOUR_MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<YOUR_MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "sandbase-harness-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MANAGED_AGENTS_URL=<YOUR_MANAGED_AGENTS_URL>",
        "-e",
        "MANAGED_AGENTS_API_KEY=<YOUR_MANAGED_AGENTS_API_KEY>",
        "ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
      ],
      "env": {
        "MANAGED_AGENTS_URL": "<YOUR_MANAGED_AGENTS_URL>",
        "MANAGED_AGENTS_API_KEY": "<YOUR_MANAGED_AGENTS_API_KEY>"
      }
    }
  }
}

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