Groundlink

Name: Groundlink
Author: ohhavefun

by ohhavefunversion 0.1.1i★ –iRuns on your computer

Registry nameio.github.ohhavefun/groundlink

Install

Overview

Description from the maker (original English)

Cited web search for MCP hosts. Returns source-bearing results from Groundlink.

PopNx MCP’s three pillars

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

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: GROUNDLINK_API_KEY

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: GROUNDLINK_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

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

{
  "mcpServers": {
    "groundlink": {
      "command": "npx",
      "args": [
        "-y",
        "groundlink-mcp"
      ],
      "env": {
        "GROUNDLINK_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add groundlink --env GROUNDLINK_API_KEY=your-value -- npx -y groundlink-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "groundlink": {
      "command": "npx",
      "args": [
        "-y",
        "groundlink-mcp"
      ],
      "env": {
        "GROUNDLINK_API_KEY": "your-value"
      }
    }
  }
}

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": {
    "groundlink": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "groundlink-mcp"
      ],
      "env": {
        "GROUNDLINK_API_KEY": "your-value"
      }
    }
  }
}

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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Values you fill in

GROUNDLINK_API_KEY secret required env
Groundlink API key used for every cited web-search request.

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

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

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 with the GitHub account ohhavefun, which owns the repo
… 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
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7246 servers in this category
Published to the registry more recently than 33% of the other 7246 servers in this category
Basic checks equal to or better than 100% of the other 7246 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 Groundlink safe?

It passed 1 of 1 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?

You need to fill in: GROUNDLINK_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.1) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

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

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated today

Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago

Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

Install

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.

Groundlink MCP Server

Use Groundlink's cited web-search results from any Model Context Protocol (MCP) host. The server exposes one focused tool, groundlink_search, which sends a query to Groundlink and returns source-bearing results (title, url, snippet, and source) for the model to use when it needs evidence rather than a guess.

Groundlink currently combines Wikipedia and DuckDuckGo results. Each Groundlink API key includes 100 free test queries; after that, prepaid usage is $0.001 per query (one credit per query).

Package: groundlink-mcp@0.1.1 is published on npm.

Source: https://github.com/ohhavefun/groundlink

Live API documentation: https://9ea69cec60fa01f65bbb647a092bcbb4.ctonew.app/docs
Pricing and credits: https://9ea69cec60fa01f65bbb647a092bcbb4.ctonew.app/pricing

This repository is the home of Groundlink's official developer integrations. There are two, both maintained here:

Integration	What it is	Install
groundlink-mcp (MCP server)	Exposes Groundlink to any MCP host (Claude, Cursor, …)	`npm install -g groundlink-mcp` (also on the official MCP registry as `io.github.ohhavefun/groundlink`)
langchain-groundlink (Python/LangChain)	A `GroundlinkSearchTool` for Python agents	`pip install "langchain-groundlink @ git+https://github.com/ohhavefun/groundlink#subdirectory=langchain-groundlink"`

Both use the same free trial keys (100 queries) from the Groundlink onboarding, then prepaid usage at $0.001/query.

Where Groundlink is listed

langchain-groundlink (Python / LangChain)

Use Groundlink's cited search from any Python agent or BaseTool pipeline. The tool returns source-bearing results (title, url, snippet, source) so your agent answers from evidence and can cite it.

Install from GitHub (the package is intentionally not on PyPI):

pip install "langchain-groundlink @ git+https://github.com/ohhavefun/groundlink#subdirectory=langchain-groundlink"

Quick usage (10 seconds): get a free key from the docs, then:

from langchain_groundlink import GroundlinkSearchTool

tool = GroundlinkSearchTool(api_key="glk_your_trial_key") # or export GROUNDLINK_API_KEY result = tool.invoke({"query": "Who was Ada Lovelace?"}) print(result)

Full usage, configuration, and error handling are in langchain-groundlink/README.md.

Groundlink MCP Server

Use Groundlink's cited web-search results from any Model Context Protocol (MCP) host below.

Field	Value
Tool name	`groundlink_search`
Input	`{ query: string, max_results?: number }`
`max_results`	1–10; default 5 (or `GROUNDLINK_MAX_RESULTS`)
Output	JSON: `{ query, results: [{ title, url, snippet, source }], meta }`

Use it for factual questions where the host should return URLs/sources with its answer. The MCP server is deliberately thin: it forwards the query to the Groundlink HTTPS API and returns the API response over MCP stdio.

Install and run

You need a Groundlink API key (glk_...). Ask the Groundlink operator for one or obtain one through the Groundlink onboarding flow.

npm install -g groundlink-mcp

export GROUNDLINK_API_KEY=glk_your_key_here groundlink-mcp

Alternatively, an MCP host can execute the package without a global install:

npx -y groundlink-mcp

The process uses stdio; it does not open an HTTP port or print normal output to stdout. MCP hosts should launch it rather than running it interactively.

Configuration

Variable	Required	Default	Meaning
`GROUNDLINK_API_KEY`	Yes	—	API key used for every Groundlink request.
`GROUNDLINK_BASE_URL`	No	Groundlink live URL	Override only for a compatible deployment.
`GROUNDLINK_MAX_RESULTS`	No	`5`	Default results per tool call; capped at `10`.

Claude Desktop configuration

Add this entry to Claude Desktop's MCP configuration file and restart Claude Desktop. Keep the API key private: do not commit it to a repository or share the configuration file.

"mcpServers": { "groundlink": { "command": "npx", "args": ["-y", "groundlink-mcp"], "env": { "GROUNDLINK_API_KEY": "glk_your_key_here" } } } }

If the package is installed globally, use "command": "groundlink-mcp" and omit args. For hosts that need an absolute executable path, point command at the installed groundlink-mcp binary.

What happens on errors

Missing GROUNDLINK_API_KEY: the server exits at startup with a clear setup error.
API key rejected (401): returned to the MCP host as a tool error; correct the key rather than retrying.
No remaining free or prepaid credits (402): returned as a tool error; fund the key before another search.
Search-source outage (502): returned as a tool error; a short retry may help.

Marketplace description

Groundlink — cited web search for MCP. Give Claude, Cursor, and other MCP hosts one groundlink_search tool that returns source-bearing results instead of unsupported factual guesses. Every key starts with 100 free tests, then usage is $0.001 per query through prepaid credits.

Development and release checks

bun install

bun run typecheck bun run build # emits executable dist/index.js bun run test # MCP stdio smoke test npm run pack:check # inspect the npm tarball without publishing

The npm package intentionally ships only the compiled dist/ runtime, this README, and npm's required package metadata. Source and smoke tests stay out of the tarball.

Groundlink

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Groundlink MCP Server

Where Groundlink is listed

langchain-groundlink (Python / LangChain)

Groundlink MCP Server

Install and run

Configuration

Claude Desktop configuration

What happens on errors

Marketplace description

Development and release checks