Jamjet Policy vs Delego

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

Which MCP Server Should You Choose?

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

Choose Delego when:

• You need dedicated capabilities in the Security domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• Primary tools included: Intent/fingerprint binding against the open Delego wire specification (protocol 0.3), Policy-based action authorization independent of credential scope, Human-in-the-loop CLI approval for flagged actions.

Feature & Specification Comparison

Specification	Jamjet Policy jamjet-labs Security	Delego Security
Summary	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/.	Intent-bound action authorization for AI agents: policy, human approval, and a signed audit trail.
Category & Scope

Tools & Capabilities Breakdown

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).

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

{
  "mcpServers": {
    "delego": {
      "command": "uvx",
      "args": [
        "delego"
      ]
    }
  }
}

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