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PopNx MCPMCP servers for people who use AI · explained in plain words

lookupd

by lookupdversion 0.1.2i★ –iComputer or cloud
Registry namecom.lookupd/lookupd

Install

Overview

Description from the maker (original English)

Find the right MCP server or skill for a task: ranked, install-ready results from 50K+ servers.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Install

Pick the AI app you use, then copy the settings.

Before you install

You need

  • Runs in the cloudNothing to install; it connects over the internet
  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://api.lookupd.com/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

claude mcp add --transport http lookupd https://api.lookupd.com/mcp

Or run it on your computer

claude mcp add lookupd -- npx -y lookupd mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "lookupd": {
      "url": "https://api.lookupd.com/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "lookupd": {
      "type": "http",
      "url": "https://api.lookupd.com/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://api.lookupd.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • find_capability

    Find MCP servers that provide a capability for a task. Pass a short capability phrase (e.g. "read Linear issues"), not the user's full request. Results are ranked provisionally (no outcome evidence yet) and each includes an install snippet for the given runtime. Lookups are free.

  • get_entry

    Full details for one entry: raw server.json, install snippets for the runtime, lookupd metadata. Pass the registry name (e.g. io.github.acme/linear-mcp), or, for a server already in your MCP config, its remote url or its npm/PyPI package; that finds the registry name to use with

  • health

    Probe status of an entry: whether its remote endpoint is up, needs a login (auth_required), is down or dead, with 7-day uptime, median latency, tool count and the last probe. Stdio-only servers are not_probeable.

  • report_outcome

    After a task used an MCP server, report once per server whether it worked: servers found via lookupd in this conversation and servers already installed alike. `entry` is the registry name; for an installed server, get it from get_entry with the server's url or package (skip the r

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain lookupd.com (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 283 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 4 tool descriptions and found no hidden instructions to the AI

Compared with others in Docs, sheets & office worki

  • More stars than 0% of the other 2174 servers in this category
  • Published to the registry more recently than 90% of the other 2174 servers in this category
  • Basic checks equal to or better than 100% of the other 2174 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is lookupd safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.2) reached the registry 3 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Agent-Native Calendar, Excel MCP Server, MCP Server for Excel

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Agent-Native Google Calendar - manage events, sync, and public booking

Runs in the cloud★ 7,620MITUpdated 2 months ago
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Excel MCP Server

by haris-musa

Lets AI create and edit Excel files itself, including formulas, charts and PivotTables, without Excel installed.

Runs on your computer★ 4,276MITUpdated 6 days ago
Install

Excel automation for AI - Sheets, Power Query, DAX, VBA, Tables, Ranges and more. Windows only.

Runs on your computer★ 847MITUpdated 3 days ago
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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

lookupd

The registry agents call to find the right MCP server, skill or agent for a task. Free to look up. Neutral: lookupd never hosts or proxies tool calls, and rank is never for sale. Rankings are *provisional* until real outcome evidence exists.

This repository holds everything an agent installs:

  • lookupd on npm: the CLI and the npx lookupd mcp stdio bridge to the lookupd API
  • skills/find-capability: the skill that teaches an agent the find → approve → install → report loop
  • a Claude Code plugin + marketplace (this repo is both)

The API, crawler and ranking live in a private repository. Data: Official MCP Registry (CC0), mirrored and enriched by lookupd; lookupd is not affiliated with the MCP project.

Install

Claude Code (plugin: skill + MCP tools):

/plugin marketplace add lookupd/lookupd

/plugin install lookupd@lookupd

Any agent that reads skills (skills.sh):

npx skills add lookupd/lookupd

MCP only, any client that launches stdio servers:

claude mcp add lookupd -- npx -y lookupd@latest mcp

.vscode/mcp.json:

{ "servers": { "lookupd": { "command": "npx", "args": ["-y", "lookupd@latest", "mcp"] } } }

.cursor/mcp.json / Claude Desktop:

{ "mcpServers": { "lookupd": { "command": "npx", "args": ["-y", "lookupd@latest", "mcp"] } } }

Remote endpoint, for clients that connect to streamable HTTP directly: https://api.lookupd.com/mcp.

Tools

toolwhat it does
find_capability{ task, runtime?, max_results? } → ranked candidates with paste-ready install snippets
get_entryfull details for one entry by registry name
healthregistry status and last-seen time (live probes coming)
report_outcomestructured outcome report; only exposed after lookupd telemetry on

CLI

npx lookupd find "read Linear issues" --runtime claude-code

npx lookupd find "pdf extraction" --json npx lookupd telemetry on|off|status npx lookupd login --key lk_... # optional API key npx lookupd mcp # stdio bridge (what the plugin runs)

Environment: LOOKUPD_API_URL (default https://api.lookupd.com), XDG_CONFIG_HOME. Config lives at ~/.config/lookupd/config.json.

Telemetry

Off by default. When you run lookupd telemetry on, the agent can call report_outcome after using a server it found through lookupd. A report contains only: the entry name, success, a latency bucket, your runtime, a capability tag from a fixed list, and an error class. Never prompts, task text, file paths or output. Lookups themselves are free and unauthenticated; the search phrase is stored truncated to 160 characters as anonymous demand data. Policy: https://lookupd.com/telemetry

Develop

pnpm install

pnpm test # vitest: bridge, CLI, API client, config, manifests pnpm build # tsup → dist/cli.js claude plugin validate .

Local end-to-end against a dev API: LOOKUPD_API_URL=http://localhost:3000 npx lookupd find "linear", and in Claude Code /plugin marketplace add /path/to/this/repo.

License

MIT. See LICENSE.

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