Checkbox

Name: Checkbox
Author: checkbox-site

by checkbox-siteversion 1.0.1i★ –iComputer or cloud

Registry namesite.checkbox/checkbox

Install

Overview

Description from the maker (original English)

Auto-renewal law compliance (ROSCA, CA, NY, other states) for subscription checkout and emails

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 checksi3 of 3 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: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Online shops & payments
You need to fill in: CHECKBOX_API_KEY, Authorization

Install

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

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: CHECKBOX_API_KEY, Authorization

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

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?

ClaudeClaude CodeCursorVS CodeChatGPT

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Or run it on your computer

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

{
  "mcpServers": {
    "checkbox": {
      "command": "npx",
      "args": [
        "-y",
        "@checkbox-site/mcp"
      ],
      "env": {
        "CHECKBOX_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http checkbox https://app.checkbox.site/mcp --header 'Authorization: your-value'

Or run it on your computer

claude mcp add checkbox --env CHECKBOX_API_KEY=your-value -- npx -y @checkbox-site/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": {
    "checkbox": {
      "url": "https://app.checkbox.site/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

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": {
    "checkbox": {
      "command": "npx",
      "args": [
        "-y",
        "@checkbox-site/mcp"
      ],
      "env": {
        "CHECKBOX_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": {
    "checkbox": {
      "type": "http",
      "url": "https://app.checkbox.site/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "checkbox": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@checkbox-site/mcp"
      ],
      "env": {
        "CHECKBOX_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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

CHECKBOX_API_KEY secret required env
Checkbox API key (ck_test_… or ck_live_…). Free at https://app.checkbox.site/sign-up
Authorization secret HTTP header
Optional. Clients that implement MCP OAuth sign in without it (browser approval). Otherwise Bearer (ck_test_… or ck_live_…).

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

What it can do

The server asks you to sign in before it lists its tools.

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 against the domain checkbox.site (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 280 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Online shops & paymentsi

More stars than 0% of the other 1751 servers in this category
Published to the registry more recently than 88% of the other 1751 servers in this category
Basic checks equal to or better than 100% of the other 1751 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 Checkbox 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?

You need to fill in: CHECKBOX_API_KEY, Authorization

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 (1.0.1) reached the registry 2 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: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

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

Spree Commerce: open-source B2B and marketplace ecommerce

by spree

Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.

Runs in the cloud★ 15,812BSD-3-ClauseUpdated 7 days ago

Install

Stripe MCP

by stripe

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

Runs in the cloud★ 2,043MITUpdated 12 months ago

Install

MCP Cn Commerce

by TonyWang-hub

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

Runs on your computer★ 96MITUpdated 28 days ago

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.

Checkbox MCP server

Subscription-law compliance for AI coding agents. Connect Claude, Cursor, VS Code or any MCP client to Checkbox and your agent can set up a project with one human click, check checkout code before it ships, work the compliance plan to done and run synthetic test subscriptions — against ROSCA, California's Automatic Renewal Law, New York GBL § 527-a and the other state automatic-renewal laws.

Docs: https://checkbox.site/docs/mcp · Agent index: https://checkbox.site/llms.txt · Free to start.

Connect

Remote (recommended) — Streamable HTTP at https://app.checkbox.site/mcp, nothing to install, no API key to copy: the server implements MCP OAuth, so your client opens a Checkbox sign-in and you click Approve once.

claude.ai / Claude Desktop: Settings → Connectors → Add custom connector → https://app.checkbox.site/mcp → Connect → Approve.
Claude Code: claude mcp add --transport http checkbox https://app.checkbox.site/mcp, then /mcp → Authenticate.
Cursor (.cursor/mcp.json): { "mcpServers": { "checkbox": { "url": "https://app.checkbox.site/mcp" } } }, then Connect.

API keys still work everywhere (CI, headless agents): add --header "Authorization: Bearer $CHECKBOX_SECRET_KEY" (Claude Code) or "headers": { "Authorization": "Bearer ${env:CHECKBOX_SECRET_KEY}" } (Cursor). Agents without a browser: https://app.checkbox.site/mcp?login=device offers setup_checkbox, which returns an approval link and then test-mode keys.

Local (stdio) — for clients without remote MCP support:

"mcpServers": { "checkbox": { "command": "npx", "args": ["-y", "@checkbox-site/mcp"], "env": { "CHECKBOX_API_KEY": "ck_test_..." } } } }

Package: @checkbox-site/mcp on npm (Node 20+; binary checkbox-mcp). Options: --read-only, --api-key, --api-base; environment CHECKBOX_API_KEY (falls back to CHECKBOX_SECRET_KEY), CHECKBOX_API_BASE, CHECKBOX_MCP_READ_ONLY=true.

Tools

Start with setup_checkbox; then get_compliance_plan → apply a task → verify_task, until the plan is compliant. Preflight tools (check_disclosure, check_stripe_checkout_session, check_email, check_page_html, get_notice_schedule) work on code before it is deployed. The full list, with the API operation behind each tool, is at https://checkbox.site/docs/mcp#tools.

Every tool is a thin call to the public API (https://app.checkbox.site/v1), so keys, scopes, test/live mode and rate limits are the API's. Write tools say so and carry readOnlyHint: false. Results are written for models and end with the next tool to call.

Not legal advice

Rules drafted from the statute text and updated as new statutes come into effect. Automated checks, not legal advice. Every rule cites its source, so you or your lawyer can check it.

License

MIT

Checkbox

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

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 Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

Checkbox MCP server

Connect

Tools

Not legal advice

License