What is the key difference between Relay and Claude Code Bridge?

Relay belongs to the Developer Tools category with local stdio execution, while Claude Code Bridge belongs to the Developer Tools category with local stdio execution.

How do I install Relay or Claude Code Bridge 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 Relay and Claude Code Bridge free or paid?

Relay operates under a Free / Open Source model (No auth required). Claude Code Bridge operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Relay lists 0 tools with 0 views and 4 GitHub stars. Claude Code Bridge lists 0 tools with 0 views and 11 GitHub stars.

Can I use both Relay and Claude Code Bridge 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

Relay vs Claude Code Bridge

In-depth architectural comparison of the Relay and Claude Code Bridge 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

Relay

Developer Tools · Local stdio

Quality: 36/100 (Fair) | Auth: No auth required

Claude Code Bridge

Developer Tools · Local stdio

Quality: 39/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Relay if you need specialized Developer Tools tools running via a local process. Choose Claude Code Bridge 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 Relay 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 Relay Details

Choose Claude Code Bridge 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 Claude Code Bridge Details

Feature & Specification Comparison

Specification	Relay Developer Tools	Claude Code Bridge Developer Tools
Summary	MCP relay server for Claude Desktop <-> Claude Code communication	MCP relay so Claude Code agents on different machines can exchange messages via named channels.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Relay Tools (0)

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

Claude Code Bridge 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).

Relay Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "relay": {
      "command": "uvx",
      "args": [
        "mcp-server-relay"
      ]
    }
  }
}

Claude Code Bridge Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "claude-code-bridge": {
      "command": "uvx",
      "args": [
        "claude-code-bridge"
      ]
    }
  }
}

Frequently Asked Questions

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

More alternatives to Relay More alternatives to Claude Code Bridge Developer Tools category hub Canonical compare URL