What is the key difference between Gatekeeper and Jamjet Policy?

Gatekeeper belongs to the Security category with local stdio execution, while Jamjet Policy belongs to the Security category with local stdio execution.

How do I install Gatekeeper or Jamjet Policy in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Gatekeeper and Jamjet Policy free or paid?

Gatekeeper operates under a Free / Open Source model (No auth required). Jamjet Policy operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Gatekeeper lists 6 tools with 1 views and 0 GitHub stars. Jamjet Policy lists 6 tools with 3 views and 2 GitHub stars.

Can I use both Gatekeeper and Jamjet Policy together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Gatekeeper vs Jamjet Policy

In-depth architectural comparison of the Gatekeeper and Jamjet Policy 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.

At a Glance & Executive Verdict

Gatekeeper

Security · Local stdio

Quality: 41/100 (Fair) | Auth: No auth required

Jamjet Policy

Security · Local stdio

Quality: 44/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Gatekeeper if you need specialized Security tools running via a local process. Choose Jamjet Policy if your workspace requires Security integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Gatekeeper when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: Policy-based allow, deny, and approval decisions, Sensitive-boundary rule pack, USD, token, and call budgets.

Explore Gatekeeper Details

Choose Jamjet Policy when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: MCP stdio interception, YAML policy configuration, Tool-call blocking.

Explore Jamjet Policy Details

Feature & Specification Comparison

Specification	Gatekeeper Security	Jamjet Policy jamjet-labs Security
Summary	Run MCP tool calls through Runestone Gatekeeper — policy enforcement, human approval, audit.	MCP stdio interceptor (@jamjet/mcp-shim) that applies one YAML policy file (block / requireapproval / audit / budget cap) to tools/call requests before they reach the real MCP server. The same policy also runs in Claude Code PreToolUse hooks (@jamjet/claude-code-hook), OpenAI Agents SDK guardrails (@jamjet/openai-guardrail), and JamJet's Python/TS SDKs — jamjet audit show tails every decision across every adapter from /.jamjet/audit/.
Category & Scope

Tools & Capabilities Breakdown

Gatekeeper Tools (6)

Policy-based allow, deny, and approval decisions

Sensitive-boundary rule pack

USD, token, and call budgets

JSONL or Postgres audit trails

Usage and budget endpoints

Optional Anthropic request proxy

Jamjet Policy Tools (6)

MCP stdio interception

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).

Gatekeeper Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "gatekeeper": {
      "command": "npx",
      "args": [
        "-y",
        "@runestone-labs/gatekeeper-mcp"
      ]
    }
  }
}

Jamjet Policy Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "jamjet-labs-jamjet-policy": {
      "command": "uvx",
      "args": [
        "jamjet-labs-jamjet-policy"
      ]
    }
  }
}

Frequently Asked Questions

Gatekeeper is categorized under Security and uses a local stdio subprocess. In contrast, Jamjet Policy belongs to Security using local stdio subprocess. Select Gatekeeper when you need capabilities focused on security and Jamjet Policy when you require tools for security.

More alternatives to Gatekeeper More alternatives to Jamjet Policy Security category hub