Underindex MCP Server

by ascaniounderindex Your server? Claim it

local only

Underindex runs on your own machine — the client starts it, so there is no endpoint to ping. 54 installs a week from npm. Last commit 3 Nov 2026.

Verified records on 60 niche fashion subcultures for AI agents, $0.01 per lookup over x402

Installs per day peak 13 · avg 0

a month agotoday

Installs / week

npm · underindex-mcp

Stars

0 open issues

3 Nov 2026

Last commit

4 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Underindex every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add underindex -- npx -y underindex-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "underindex": {
      "command": "npx",
      "args": [
        "-y",
        "underindex-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.underindex]
command = "npx"
args = ["-y", "underindex-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "underindex": {
      "command": "npx",
      "args": [
        "-y",
        "underindex-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "underindex": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "underindex-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: UNDERINDEX_PRIVATE_KEY (Private key of a dedicated EVM wallet holding USDC on Base. Optional: without it get_subculture uses the free allowance of 3 records a day), UNDERINDEX_MAX_PER_CALL (Hard spending cap per lookup, default $0.05).

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Underindex — questions

Answers built from our own checks of this server.

Why is there no uptime for Underindex?

Underindex runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package underindex-mcp was installed 54 times last week.

How do I connect Underindex?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls underindex-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Underindex?

The npm package underindex-mcp was installed 54 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Underindex open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.