What is the key difference between Llm Router and MCP Server Langfuse?

Llm Router belongs to the Developer Tools category with local stdio execution, while MCP Server Langfuse belongs to the Developer Tools category with local stdio execution.

How do I install Llm Router or MCP Server Langfuse 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 Llm Router and MCP Server Langfuse free or paid?

Llm Router operates under a Free / Open Source model (No auth required). MCP Server Langfuse operates under a BYOK (Pay Provider Direct) model (API Key required).

Which MCP server has more tools and community activity?

Llm Router lists 6 tools with 3 views and 79 GitHub stars. MCP Server Langfuse lists 2 tools with 3 views and 173 GitHub stars.

Can I use both Llm Router and MCP Server Langfuse 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

Llm Router vs MCP Server Langfuse

In-depth architectural comparison of the Llm Router and MCP Server Langfuse 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

Llm Router

Developer Tools · Local stdio

Quality: 56/100 (Good) | Auth: No auth required

MCP Server Langfuse

Developer Tools · Local stdio

Quality: 47/100 (Fair) | Auth: API Key required

Verdict Summary: Choose Llm Router if you need specialized Developer Tools tools running via a local process. Choose MCP Server Langfuse 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 Llm Router 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).
You have access to required keys: OPENAI_API_KEY, GEMINI_API_KEY, OLLAMA_BASE_URL, OPENROUTER_API_KEY.
Primary tools included: Complexity- and cost-aware model routing, Claude subscription quota protection, Support for 20+ model providers.

Explore Llm Router Details

Choose MCP Server Langfuse when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
You have access to required keys: LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_BASEURL.

Feature & Specification Comparison

Specification	Llm Router ypollak2 Developer Tools	MCP Server Langfuse langfuse Developer Tools
Summary	Subscription-aware LLM router for Claude Code. Routes tasks to 20+ providers (OpenAI, Gemini, Groq, Ollama, Codex) based on complexity classification, Claude subscription pressure, and cost. Free tasks stay on Claude subscription; expensive tasks fall back to the cheapest capable model. Includes 30 MCP tools, 6 auto-routing hooks, semantic dedup cache, prompt caching, daily spend cap, and a live web dashboard.	MCP server to access and manage LLM application prompts created with Langfuse) Prompt Management.
Category & Scope

Tools & Capabilities Breakdown

Llm Router Tools (6)

Complexity- and cost-aware model routing

Claude subscription quota protection

Support for 20+ model providers

Six automatic routing hooks

Semantic deduplication and prompt caching

Live web dashboard and health checks

MCP Server Langfuse Tools (2)

get-prompts

List available prompts

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).

Llm Router Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "ypollak2-llm-router": {
      "command": "uvx",
      "args": [
        "llm-routing"
      ],
      "env": {
        "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE",
        "GEMINI_API_KEY": "YOUR_GEMINI_API_KEY_HERE",
        "OLLAMA_BASE_URL": "YOUR_OLLAMA_BASE_URL_HERE",
        "OPENROUTER_API_KEY": "YOUR_OPENROUTER_API_KEY_HERE"
      }
    }
  }
}

MCP Server Langfuse Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "langfuse-mcp-server-langfuse": {
      "command": "npx",
      "args": [
        "-y",
        "langfuse-mcp-server-langfuse"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "YOUR_LANGFUSE_PUBLIC_KEY_HERE",
        "LANGFUSE_SECRET_KEY": "YOUR_LANGFUSE_SECRET_KEY_HERE",
        "LANGFUSE_BASEURL": "YOUR_LANGFUSE_BASEURL_HERE"
      }
    }
  }
}

Frequently Asked Questions

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

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