What is the key difference between Assistant MCP and Cosmos MCP?

Assistant MCP belongs to the Knowledge & Memory category with local stdio execution, while Cosmos MCP belongs to the Knowledge & Memory category with local stdio execution.

How do I install Assistant MCP or Cosmos 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 Assistant MCP and Cosmos MCP free or paid?

Assistant MCP operates under a BYOK (Pay Provider Direct) model (API Key required). Cosmos MCP operates under a Free / Open Source model (API Key required).

Which MCP server has more tools and community activity?

Assistant MCP lists 5 tools with 3 views and 45 GitHub stars. Cosmos MCP lists 6 tools with 3 views and 3 GitHub stars.

Can I use both Assistant MCP and Cosmos 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

Assistant MCP vs Cosmos MCP

In-depth architectural comparison of the Assistant MCP and Cosmos 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

Assistant MCP

Knowledge & Memory · Local stdio

Quality: 37/100 (Fair) | Auth: API Key required

Cosmos MCP

Knowledge & Memory · Local stdio

Quality: 56/100 (Good) | Auth: API Key required

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

Which MCP Server Should You Choose?

Choose Assistant MCP when:

You need dedicated capabilities in the Knowledge & Memory 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: PINECONE_API_KEY, PINECONE_ASSISTANT_HOST, LOG_LEVEL.
Primary tools included: Pinecone Assistant information retrieval, Configurable multiple-result retrieval, Docker deployment.

Explore Assistant MCP Details

Choose Cosmos MCP when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: COSMOS_TOKEN.

Feature & Specification Comparison

Specification	Assistant MCP pinecone-io Knowledge & Memory	Cosmos MCP teampolarity Knowledge & Memory
Summary	Connects to your Pinecone Assistant and gives the agent context from its knowledge engine.	Personal knowledge graph shared across MCP clients. Account-keyed and portable as a .polarity file, with sources for iMessage, browser history, calendar, Claude Desktop transcripts, shell history, Notion, and Obsidian. npx -y @polarity-lab/cosmos-mcp
Category & Scope

Tools & Capabilities Breakdown

Assistant MCP Tools (5)

Pinecone Assistant information retrieval

Configurable multiple-result retrieval

Docker deployment

Rust source build

Claude Desktop configuration

Cosmos MCP Tools (6)

Shared account-keyed personal knowledge graph

Eleven MCP read and write tools

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).

Assistant MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "pinecone-io-assistant-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pinecone-io-assistant-mcp"
      ],
      "env": {
        "PINECONE_API_KEY": "YOUR_PINECONE_API_KEY_HERE",
        "PINECONE_ASSISTANT_HOST": "YOUR_PINECONE_ASSISTANT_HOST_HERE",
        "LOG_LEVEL": "YOUR_LOG_LEVEL_HERE"
      }
    }
  }
}

Cosmos MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "teampolarity-cosmos-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@polarity-lab/cosmos-mcp"
      ],
      "env": {
        "COSMOS_TOKEN": "YOUR_COSMOS_TOKEN_HERE"
      }
    }
  }
}

Frequently Asked Questions

Assistant MCP is categorized under Knowledge & Memory and uses a local stdio subprocess. In contrast, Cosmos MCP belongs to Knowledge & Memory using local stdio subprocess. Select Assistant MCP when you need capabilities focused on knowledge & memory and Cosmos MCP when you require tools for knowledge & memory.

More alternatives to Assistant MCP More alternatives to Cosmos MCP Knowledge & Memory category hub