MCP Ucp

Name: MCP Ucp
Author: codespar

by codesparversion 0.1.4i★ –iRuns on your computer

Registry nameio.github.codespar/mcp-ucp

Install

Overview

Description from the maker (original English)

Google UCP — agentic shopping, cart, checkout, orders, delivery

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: Online shops & payments
You need to fill in: UCP_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: UCP_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": {
    "ucp": {
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-ucp"
      ],
      "env": {
        "UCP_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add ucp --env UCP_API_KEY=your-value -- npx -y @codespar/mcp-ucp

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": {
    "ucp": {
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-ucp"
      ],
      "env": {
        "UCP_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": {
    "ucp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-ucp"
      ],
      "env": {
        "UCP_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

UCP_API_KEY secret required env
API key for ucp

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 codespar, 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 Online shops & paymentsi

More stars than 0% of the other 1745 servers in this category
Published to the registry more recently than 14% of the other 1745 servers in this category
Basic checks equal to or better than 100% of the other 1745 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 MCP Ucp 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: UCP_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 (0.1.4) reached the registry 5 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: 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 27 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.

@codespar/mcp-ucp

Deprecated: no live endpoint. Measured on 2026-09-27: commerce.googleapis.com answers every path with Google's generic Error 404 (Not Found) page, and sandbox.commerce.googleapis.com (used with UCP_SANDBOX=true) fails the TLS handshake, because the certificate served there covers *.googleapis.com and not the extra label. UCP is an open specification, not an API Google hosts. No tool in this server reaches a service. The package is deprecated on npm and stays in this repository for reference only. If you have a working endpoint, point the server at it with UCP_BASE_URL. To bring the package back, open an issue in mcp-dev-latam with the provider's documented base URL.

MCP server for Google UCP — Universal Commerce Protocol for agentic shopping, cart, checkout, orders, and delivery

What is UCP?

Universal Commerce Protocol (UCP) is Google's open standard for agentic commerce. It enables AI agents to autonomously discover products, build carts, checkout, manage orders, and track deliveries — without screen-scraping or bespoke merchant integrations.

UCP works alongside AP2 (payment processing) and A2A (agent-to-agent interoperability), with MCP as the transport layer.

Quick Start

Claude Desktop

"mcpServers": { "ucp": { "command": "npx", "args": ["-y", "@codespar/mcp-ucp"], "env": { "UCP_API_KEY": "your-key", "UCP_MERCHANT_ID": "your-merchant-id" } } } }

Claude Code

claude mcp add ucp -- npx @codespar/mcp-ucp

Tools (20)

Tool	Purpose
`search_products`	Search merchant product catalog.
`get_product`	Get detailed product information including pricing, variants, availability, and reviews
`check_availability`	Check product stock and delivery availability for a specific location
`list_merchants`	List UCP-compatible merchants with optional category and region filters
`create_cart`	Create a new shopping cart for a merchant
`add_to_cart`	Add an item to the shopping cart
`remove_from_cart`	Remove an item from the shopping cart
`get_cart`	Get cart contents, item totals, taxes, and shipping estimates
`clear_cart`	Remove all items from the cart
`get_delivery_options`	Get available shipping and delivery options for a cart
`initiate_checkout`	Start the checkout process for a cart.
`apply_payment`	Apply a payment method to the checkout session.
`confirm_order`	Confirm and place the order.
`get_order`	Get order details including items, status, payment, and shipping info
`list_orders`	List orders with optional filters
`cancel_order`	Cancel a pending or confirmed order
`request_return`	Request a return or refund for a delivered order
`track_shipment`	Get real-time shipment tracking details for an order
`link_identity`	Link buyer identity for personalization and order history across merchants
`get_profile`	Get buyer profile, preferences, and linked merchants

UCP + AP2 + A2A — The Full Stack

AI Agent

└── MCP (tool interface) └── UCP (commerce: discover → cart → checkout → order → delivery) ├── A2A (agent-to-agent discovery & communication) └── AP2 (payment: authorize → execute → settle)

Environment Variables

Variable	Required	Description
`UCP_API_KEY`	Yes	Sent as `Authorization: Bearer`
`UCP_MERCHANT_ID`	No	Sent as the `X-Merchant-Id` header
`UCP_SANDBOX`	No	`true` switches `BASE_URL` to `https://sandbox.commerce.googleapis.com/ucp/v1`, which fails TLS

Enterprise

Need governance, budget limits, and audit trails for agent payments? CodeSpar Enterprise adds policy engine, payment routing, and compliance templates on top of these MCP servers.

Authentication

The server sends UCP_API_KEY as an Authorization: Bearer header and UCP_MERCHANT_ID as an X-Merchant-Id header on every request (src/index.ts:78-83).

There is no portal issuing those credentials. The developer portal this README used to link, developers.google.com/agents/commerce, answers HTTP 404.

License

MIT

MCP Ucp

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 Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

@codespar/mcp-ucp

What is UCP?

Quick Start

Claude Desktop

Claude Code

Tools (20)

UCP + AP2 + A2A — The Full Stack

Environment Variables

Links

Enterprise

Authentication

License