Grassy Knees

Name: Grassy Knees
Author: grassyknees

by grassykneesversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.grassyknees/grassyknees-mcp

Install

Overview

Description from the maker (original English)

Real, source-checked kids' events and places in 42 US metros, linked to grassyknees.com.

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: Travel, maps & weather

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).
The registry lists no key to fill in.

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

Run this in your terminal

claude mcp add grassyknees -- npx -y grassyknees-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "grassyknees": {
      "command": "npx",
      "args": [
        "-y",
        "grassyknees-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": {
    "grassyknees": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "grassyknees-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.

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.

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account grassyknees, 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 Travel, maps & weatheri

More stars than 0% of the other 1706 servers in this category
Published to the registry more recently than 77% of the other 1706 servers in this category
Basic checks equal to or better than 100% of the other 1706 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 Grassy Knees 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?

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?

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 (0.2.0) reached the registry 10 days 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: CGC Airport Transfers, Flightaware MCP, Killbottleneck

Alternatives

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

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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.

Grassy Knees MCP server

Website: https://grassyknees.com

A small, read-only Model Context Protocol server that lets AI assistants answer questions like *"what can I do with my kids in Denver this weekend?"* with real listings from Grassy Knees. Grassy Knees is a free directory of kids' and family events, classes and places across 42 US metro areas. Every listing is researched from the organizer's own page and shows the date it was last checked.

Every result says what the listing is, where and when, ages, and its grassyknees.com page URL. Price, availability, the last-checked date, registration, the organizer's links and contact details are on that page. Each call returns at most 20 listings.

Example prompts

"What can I do with my kids in Denver this weekend?"
"Free things for a 4-year-old in Washington, DC in the next 7 days."
"Any STEM events for a 10-year-old in Seattle on Saturday?"
"Where can we go ice skating near Chicago?"
"Halloween events for kids in Austin."
"Tell me more about https://grassyknees.com/denver/activities/rock-creek-farm-pumpkin-patch-and-corn-maze--listing-69c7739ea9ac9cfaddb69622"

Install

Requires Node.js 20 or later. No API key needed.

Claude Desktop

Add this to claude_desktop_config.json (Settings → Developer → Edit Config):

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

Claude Code

claude mcp add grassyknees -- npx -y grassyknees-mcp

Cursor

Add this to ~/.cursor/mcp.json (or .cursor/mcp.json in a project):

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

Any other MCP client that runs stdio servers works the same way: the command is npx -y grassyknees-mcp.

Or with Docker: build the image with docker build -t grassyknees-mcp . and use docker run -i --rm grassyknees-mcp as the command.

Tools

Tool	What it does
`list_metros`	The 42 metro areas covered, with the id to pass to other tools (for example `denver`, `new-york`, `washington-dc`, `dallas-fort-worth`) and each metro's page URL.
`search_activities`	Search one metro. Filters: `when` (`today`, `tomorrow`, `this-weekend`, `next-7-days`, `next-30-days`) or `start_date`/`end_date`, `kind` (`event`, `program`, `place`, `any`), `free_only`, `age`, `category`, `query` (keywords), `limit` (1–20, default 10). Soonest first.
`get_activity`	One listing from its grassyknees.com URL or id: schedule, upcoming dates, venue, ages and its page URL.
`seasonal_guide`	The Halloween, Christmas (lights and holiday events), ice skating or Easter guide for a metro, or the all-metros overview, as Markdown trimmed to `max_chars` (default 8,000).

Dates are in the metro's local time. this-weekend means Friday to Sunday, the same window as the site's / /this-weekend page.

Sample transcript

From npm run smoke, run against the live site on 2026-10-28 (trimmed):

tools: list_metros, search_activities, get_activity, seasonal_guide

=== search_activities {"metro":"denver","when":"this-weekend","limit":3} 60 events in Denver for this weekend (2026-10-30 to 2026-11-01); showing the first 3:

[School's Out! Day: Pumpkins & Potions](https://grassyknees.com/denver/activities/school-s-out-day-pumpkins-and-potions--listing-023a33783babb5880fc24e03) Fri, Oct 30 · 8:30 AM–3:30 PM · JCC Denver (Staenberg-Loup Jewish Community Center), 350 S. Dahlia St., Denver, CO 80246 Ages 5+ · Arts & crafts

[Rock Creek Farm Pumpkin Patch and Corn Maze](https://grassyknees.com/denver/activities/rock-creek-farm-pumpkin-patch-and-corn-maze--listing-69c7739ea9ac9cfaddb69622) Fri, Oct 30 · 9:30 AM–7:00 PM (also other dates) · Rock Creek Farm, 2005 S 112th St., Broomfield, CO 80020 Farm admission applies to ages 4 & up · Outdoors

[JTML Hoppy Halloween Storytime](https://grassyknees.com/denver/activities/jtml-hoppy-halloween-storytime--listing-5ee8642f996422fe0023e407) Fri, Oct 30 · 10:00 AM–11:00 AM · John Tomay Memorial Library, 605 6th Street, Georgetown, CO 80444 Kids (event category) · Community

More on grassyknees.com: https://grassyknees.com/denver/this-weekend

=== search_activities {"metro":"DC","when":"this-weekend","free_only":true,"limit":3} 20 events, free in Washington, DC for this weekend (2026-10-30 to 2026-11-01); showing the first 3:

[Play Day in the Park at Black Hill Discovery Center](https://grassyknees.com/washington-dc/activities/play-day-in-the-park-at-black-hill-discovery-center--listing-c17ea7ba367fd70feca1648e) Fri, Oct 30 · 11:00 AM–12:00 PM (also other dates) · Black Hill Discovery Center, 20926 Lake Ridge Drive, Boyds, MD 20841 Ages 6 mos to 3 yrs · Outdoors

...

=== get_activity {"url_or_id":"https://grassyknees.com/denver/activities/school-s-out-day-pumpkins-and-potions--listing-023a33783babb5880fc24e03"}

School's Out! Day: Pumpkins & Potions

When: Fri, Oct 30 · 8:30 AM–3:30 PM
Where: JCC Denver (Staenberg-Loup Jewish Community Center), 350 S. Dahlia St., Denver, CO 80246
Price, availability, registration, organizer links and contact: https://grassyknees.com/denver/activities/school-s-out-day-pumpkins-and-potions--listing-023a33783babb5880fc24e03

...

=== seasonal_guide {"season":"ice-skating","metro":"denver","max_chars":1500}

Ice skating with kids in Denver

9 ice rinks, public skates, holiday skate nights and learn-to-skate classes for kids in the Denver–Aurora–Centennial area this winter, ...

[Trimmed to 1500 of 6484 characters. Full guide: https://grassyknees.com/denver/ice-skating (Markdown: https://grassyknees.com/denver/ice-skating.md)]

How it gets data

Read-only, public endpoints on grassyknees.com, one request at a time:

GET /api/activities?city= &fields=list for searches (one metro's current list, filtered and capped locally to 20 results),
GET /api/activities?ids= for get_activity,
the site's Markdown pages (/ / .md) for seasonal_guide.

Responses are cached in memory for 10 minutes, so follow-up questions about the same metro don't refetch. Requests send User-Agent: grassyknees-mcp/ . Nothing is written to the site and no personal data is sent.

Set GRASSYKNEES_ORIGIN to point the server at another deployment (for testing).

Development

npm install

npm run build npm run smoke # calls each tool once against the live site (4 requests) npx @modelcontextprotocol/inspector --cli node dist/index.js --method tools/list

Credit

Data: Grassy Knees, grassyknees.com. When you show results, link to the listing's grassyknees.com page. Details can change, so check the listing page (it links the organizer's own page) before you go.

License

MIT for this server's code. Listing data belongs to Grassy Knees and is provided for lookups, not bulk copying.

Grassy Knees

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Travel, maps & weatheri

Common questions

Alternatives

CGC Airport Transfers

Flightaware MCP

Killbottleneck

README from the maker

Grassy Knees MCP server

Example prompts

Install

Claude Desktop

Claude Code

Cursor

Tools

Sample transcript

School's Out! Day: Pumpkins & Potions

Ice skating with kids in Denver

How it gets data

Development

Credit

License