What is the main functional difference between Arxivsub MCP and Nobleblocks MCP?

Arxivsub MCP is categorized under Research and uses a local stdio subprocess. Nobleblocks MCP belongs to Research and uses an install path we have not confirmed yet. Pick Arxivsub MCP for research work and Nobleblocks MCP for research.

How do I install Arxivsub MCP or Nobleblocks MCP in Claude Desktop, Cursor, or Windsurf?

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. Nobleblocks MCP has no confirmed install command yet — follow its own setup instructions.

Are Arxivsub MCP and Nobleblocks MCP free to use, or do they require API keys?

Arxivsub MCP has no declared pricing — check the project's own site. Nobleblocks MCP has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Can I run both Arxivsub MCP and Nobleblocks MCP at the same time in my AI client?

Yes. MCP clients support multiple servers: add arxivsub-mcp and nobleblocks-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Arxivsub MCP has a quality signal of 49/100 (Fair) with 1 views, 0 installs and 0 GitHub stars. Nobleblocks MCP has 41/100 (Fair) with 0 views, 0 installs and 1 GitHub stars.

Arxivsub MCP vs Nobleblocks MCP — MCP Server Comparison

Arxivsub MCP vs Nobleblocks MCP — MCP Server Comparison | AllMCPs

Feature & specification comparison

Rows where the two servers differ are marked.

Spec	Arxivsub MCP	Nobleblocks MCP
Category	Research	Research
Quality signal	49/100 · Fair	41/100 · Fair
Install command	Confirmed	Not confirmed yet
Transport	Local subprocess (stdio)	—
Auth	Not declared	Not declared
Pricing	Not declared	Not declared
Required env vars	`ARXIVSUB_SKILL_KEY`	`NOBLEBLOCKS_API_KEY`
Verified owner	Community listing	Community listing
GitHub stars	0	1
Directory activity	1 views 0 installs 0 upvotes	0 views 0 installs 0 upvotes
Tools	5	6
Full listing	View Arxivsub MCP	View Nobleblocks MCP

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Arxivsub MCP

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "arxivsub-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arxivsub-mcp"
      ],
      "env": {
        "ARXIVSUB_SKILL_KEY": "YOUR_ARXIVSUB_SKILL_KEY_HERE"
      }
    }
  }
}

Nobleblocks MCP

No confirmed install command for Nobleblocks MCP yet — follow the setup steps linked from its listing page rather than a guessed package name.

Arxivsub MCP vs Nobleblocks MCP

Which MCP server should you choose?

Choose Arxivsub MCP when

Choose Nobleblocks MCP when

Feature & specification comparison

Tools & capabilities

Arxivsub MCP tools 5

Nobleblocks MCP tools 6

Ready-to-paste client configs

Arxivsub MCP

Nobleblocks MCP

Frequently asked questions

Choose Arxivsub MCP when

Choose Nobleblocks MCP when

Arxivsub MCP tools 5

Nobleblocks MCP tools 6

Arxivsub MCP

Nobleblocks MCP

Frequently asked questions

What is the main functional difference between Arxivsub MCP and Nobleblocks MCP?

How do I install Arxivsub MCP or Nobleblocks MCP in Claude Desktop, Cursor, or Windsurf?

Are Arxivsub MCP and Nobleblocks MCP free to use, or do they require API keys?

Can I run both Arxivsub MCP and Nobleblocks MCP at the same time in my AI client?

Which MCP server has higher directory engagement and quality ratings?

Popular comparisons with Arxivsub MCP

Popular comparisons with Nobleblocks MCP