What is the key difference between Firmament and Alloy?

Firmament belongs to the Developer Tools category with local stdio execution, while Alloy belongs to the Developer Tools category with local stdio execution.

How do I install Firmament or Alloy 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 Firmament and Alloy free or paid?

Firmament operates under a Free / Open Source model (No auth required). Alloy operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Firmament lists 0 tools with 0 views and 0 GitHub stars. Alloy lists 0 tools with 0 views and 0 GitHub stars.

Can I use both Firmament and Alloy 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.

How do I install Firmament or Alloy in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Firmament and Alloy free to use, or do they require API keys?

Firmament is listed under a Free / Open Source model with No auth required . Alloy operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Firmament and Alloy at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both firmament-2 and alloy-2 as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Firmament has a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. Alloy holds a Quality Score of 25 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Firmament vs Alloy

In-depth architectural comparison of the Firmament and Alloy 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

Firmament

Developer Tools · Local stdio

Quality: 27/100 (Emerging) | Auth: No auth required

Alloy

Developer Tools · Local stdio

Quality: 25/100 (Emerging) | Auth: No auth required

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

Which MCP Server Should You Choose?

Choose Firmament when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Firmament Details

Choose Alloy when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Alloy Details

Feature & Specification Comparison

Specification	F Firmament Developer Tools	A Alloy Developer Tools
Summary	Your team's shared, verified knowledge for AI agents: ask what's true, record what you learn.	AI workspace — shared knowledge, skills, and tools for AI agents
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Firmament Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Alloy Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

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).

Firmament Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "firmament-2": {
      "command": "npx",
      "args": [
        "-y",
        "firmament-2"
      ]
    }
  }
}

Alloy Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "alloy-2": {
      "command": "npx",
      "args": [
        "-y",
        "alloy-2"
      ]
    }
  }
}

Frequently Asked Questions

Firmament is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Alloy belongs to Developer Tools using local stdio subprocess. Select Firmament when you need capabilities focused on developer tools and Alloy when you require tools for developer tools.

More alternatives to Firmament More alternatives to Alloy Developer Tools category hub Canonical compare URL

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