What is the key difference between Nostr MCP and Simctl MCP?

Nostr MCP belongs to the Communication category with local stdio execution, while Simctl MCP belongs to the Communication category with local stdio execution.

How do I install Nostr MCP or Simctl MCP 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 Nostr MCP and Simctl MCP free or paid?

Nostr MCP operates under a Free / Open Source model (other). Simctl MCP operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Nostr MCP lists 2 tools with 4 views and 38 GitHub stars. Simctl MCP lists 29 tools with 2 views and 20 GitHub stars.

Can I use both Nostr MCP and Simctl MCP 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

Nostr MCP vs Simctl MCP

In-depth architectural comparison of the Nostr MCP and Simctl MCP 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

Nostr MCP

Communication · Local stdio

Quality: 56/100 (Good) | Auth: other

Simctl MCP

Communication · Local stdio

Quality: 59/100 (Good) | Auth: No auth required

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

Which MCP Server Should You Choose?

Choose Nostr MCP when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Free / Open Source).
You have access to required keys: NOSTR_RELAYS, NOSTR_NSEC_KEY, SERVER_MODE, PORT, LOG_LEVEL, NODE_ENV.
Primary tools included: post_note, send_zap.

Explore Nostr MCP Details

Choose Simctl MCP when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
You have access to required keys: PORT.
Primary tools included: create_device, delete_device, boot_device.

Feature & Specification Comparison

Specification	Nostr MCP AbdelStark Communication	Simctl MCP ambar Communication
Summary	A Nostr MCP server that allows to interact with Nostr, enabling posting notes, and more.	A MCP server implementation for iOS Simulator control.
Category & Scope	Communication

Tools & Capabilities Breakdown

Nostr MCP Tools (2)

post_note

Posts a new note to the Nostr network.

send_zap

Sends a Lightning zap to a Nostr user.

Simctl MCP Tools (29)

create_device

Create a new simulator device

delete_device

Delete the specified simulator device

boot_device

Boot simulator device

shutdown_device

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).

Nostr MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "abdelstark-nostr-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@smithery/cli"
      ],
      "env": {
        "NOSTR_RELAYS": "YOUR_NOSTR_RELAYS_HERE",
        "NOSTR_NSEC_KEY": "YOUR_NOSTR_NSEC_KEY_HERE",
        "SERVER_MODE": "YOUR_SERVER_MODE_HERE",
        "PORT": "YOUR_PORT_HERE",
        "LOG_LEVEL": "YOUR_LOG_LEVEL_HERE",
        "NODE_ENV": "YOUR_NODE_ENV_HERE"
      }
    }
  }
}

Simctl MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "ambar-simctl-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "simctl-mcp"
      ],
      "env": {
        "PORT": "YOUR_PORT_HERE"
      }
    }
  }
}

Frequently Asked Questions

Nostr MCP is categorized under Communication and uses a local stdio subprocess. In contrast, Simctl MCP belongs to Communication using local stdio subprocess. Select Nostr MCP when you need capabilities focused on communication and Simctl MCP when you require tools for communication.

More alternatives to Nostr MCP More alternatives to Simctl MCP Communication category hub