UCM — Universal Commerce Marketplace

Name: UCM — Universal Commerce Marketplace
Author: ucmai

by ucmaiversion 0.3.3i★ –iRuns on your computer

Registry nameio.github.ucmai/ucm

Install

Overview

Description from the maker (original English)

API marketplace for AI agents — 100 services, 87 free, one API key

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

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": {
    "ucm": {
      "command": "npx",
      "args": [
        "-y",
        "@ucm/mcp-server"
      ]
    }
  }
}

Run this in your terminal

claude mcp add ucm -- npx -y @ucm/mcp-server

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "ucm": {
      "command": "npx",
      "args": [
        "-y",
        "@ucm/mcp-server"
      ]
    }
  }
}

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": {
    "ucm": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ucm/mcp-server"
      ]
    }
  }
}

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 ucmai, 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 1748 servers in this category
Published to the registry more recently than 1% of the other 1748 servers in this category
Basic checks equal to or better than 100% of the other 1748 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 UCM — Universal Commerce Marketplace 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 (0.3.3) reached the registry 9 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.

UCM — Universal Commerce Marketplace

An API marketplace that lets AI agents autonomously discover and use services — no human intervention required.

Why UCM

Today, AI agents can only use tools that developers have pre-integrated. UCM gives agents autonomous API access:

Agent needs to search the web

→ ucm_discover("search the web for information") → Found: ucm/web-search, $0.01/call → ucm_call("ucm/web-search", "search", { query: "..." }) → Results returned, $0.01 deducted from credits

No UI, no manual approval — register once, get $1.00 free credits, start calling APIs.

Features

100 Live Services — Web search, image generation, code sandbox, TTS, NASA, recipes, anime, Pokemon, D&D, npm/PyPI, Nobel Prize, and 80+ more (87 free)
$0.01–$0.05 per call — Affordable micropayments with $1.00 free credits on registration
One-Step API Calls — POST /v1/call atomically purchases and executes any service
Auto-Refund on Failure — Credits refunded automatically if upstream API fails
MCP Server — npx @ucm/mcp-server gives any MCP-capable agent 7 marketplace tools
Semantic Discovery — Natural language search powered by pgvector embeddings
Credits System — $1.00 on registration, $2.00 bonus when claimed via dashboard, redemption & referral codes
Dashboard — dashboard.ucm.ai — manage agents, credits, and usage history

Quick Start

For AI Agents (Recommended)

Give your agent this prompt:

Read https://registry.ucm.ai/onboarding.md and follow the instructions to join UCM.

The agent will self-register, get an API key + $1.00 credits, and start using services autonomously.

MCP Server

Add to your MCP config (Claude Desktop, Claude Code, Cursor, etc.):

"mcpServers": { "ucm": { "command": "npx", "args": ["-y", "@ucm/mcp-server@latest"], "env": { "UCM_API_KEY": "ucm_key_..." } } } }

No API key yet? The ucm_register tool will create one automatically.

MCP Tools (7):

Tool	Description
`ucm_discover`	Search for services by natural language need
`ucm_call`	Call a service (buy + execute atomically, auto-refund on failure)
`ucm_balance`	Check credit balance
`ucm_history`	View transaction history
`ucm_service_info`	Get service details and endpoints
`ucm_register`	Self-register as agent (free, $1.00 credits)
`ucm_list_services`	Browse the full service catalog

HTTP API

# 1. Register (free, get $1.00 credits)

curl -X POST https://registry.ucm.ai/v1/agents/register \ -H "Content-Type: application/json" \ -d '{"name": "my-agent"}'

→ { "api_key": "ucm_key_...", "credits": { "balance": "1.00" } }

2. Call a service

curl -X POST https://registry.ucm.ai/v1/call \ -H "Authorization: Bearer ucm_key_..." \ -H "Content-Type: application/json" \ -d '{"service_id": "ucm/web-search", "endpoint": "search", "body": {"query": "AI news"}}'

→ { "amount_charged": "0.01", "result": { ... } }

Python SDK

pip install ucm

from ucm import UCMClient

client = UCMClient( registry_url="https://registry.ucm.ai", api_key="ucm_key_...", )

Discover services

services = await client.discover("weather forecast API")

Call a service

result = await client.call("ucm/web-search", "search", {"query": "AI news"})

Check balance

balance = await client.balance()

Service Catalog

100 services, 217 endpoints (87 free, 13 paid at $0.01–$0.05/call).

Paid Services

Service	Price	What It Does
ucm/web-search	$0.01	Search the web (Tavily)
ucm/web-scrape	$0.02	Scrape web pages (Firecrawl)
ucm/image-generation	$0.05	Generate images from text (Together AI)
ucm/code-sandbox	$0.03	Execute code in sandbox (E2B)
ucm/text-to-speech	$0.01	Convert text to audio (Kokoro TTS)
ucm/speech-to-text	$0.01	Transcribe audio (Whisper)
ucm/email	$0.01	Send emails (Resend)
ucm/doc-convert	$0.02	Convert documents (Firecrawl)
ucm/us-stock	$0.01	US stock market data (Finnhub)
ucm/cn-finance	$0.01	China financial data (Tushare Pro)
ucm/translate	$0.01	Text translation (MyMemory)
ucm/qr-code	$0.01	Generate QR codes (GoQR.me)
ucm/news	$0.01	Latest news (NewsData.io)

Free Services (87)

Weather, Wikipedia, currency exchange, countries, holidays, dictionary, books, geocode, math, IP geolocation, address lookup, academic papers, nutrition, crypto prices, timezone, domain info, quotes, Hacker News, random data, poetry, movies, word associations, universities, zip codes, trivia, jokes, advice, bored activity ideas, Bible verses, Chuck Norris facts, recipes, cocktails, breweries, food products, sunrise/sunset, dog images, cat facts, avatars, colors, Lorem Ipsum, NASA, SpaceX, ISS tracker, space news, arXiv papers, earthquakes, World Bank, FDA data, carbon intensity, elevation, age/gender/nationality prediction, UK postcodes, vehicle data, Met Museum, Art Institute of Chicago, TV shows, anime, iTunes, music, radio stations, free games, game deals, Pokemon, D&D, memes, IP lookup, barcodes, Wayback Machine, npm, PyPI, GitHub repos, country flags, deck of cards, Star Wars, xkcd, Rick & Morty, Nobel Prize, historical events, Kanye quotes, Rust crates, Docker Hub, Lichess, periodic table, airports, random fox images.

Browse the live catalog: GET https://registry.ucm.ai/v1/services

API Reference

Method	Path	Auth	Description
POST	`/v1/call`	API Key	Call a service (buy + execute in one step)
POST	`/v1/agents/register`	No	Register agent, get API key + $1.00 credits
GET	`/v1/services`	No	Browse service catalog
POST	`/v1/discover`	No	Semantic service search
GET	`/v1/balance`	API Key	Check credit balance
GET	`/v1/history`	API Key	Transaction history
GET	`/v1/services/:id`	No	Service details
GET	`/v1/credits`	API Key	Credit balance details
GET	`/onboarding.md`	No	Agent onboarding guide

Auth: Authorization: Bearer ucm_key_...

For the full endpoint list, see the API docs.

Documentation

Resource	Link
Docs	ucm.ai/docs
Onboarding Guide	registry.ucm.ai/onboarding.md
Dashboard	dashboard.ucm.ai
npm Package	@ucm/mcp-server

UCM — Universal Commerce Marketplace

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 Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

UCM — Universal Commerce Marketplace

Why UCM

Features

Quick Start

For AI Agents (Recommended)

MCP Server

HTTP API

→ { "api_key": "ucm_key_...", "credits": { "balance": "1.00" } }

2. Call a service

→ { "amount_charged": "0.01", "result": { ... } }

Python SDK

Discover services

Call a service

Check balance

Service Catalog

Paid Services

Free Services (87)

API Reference

Documentation

Support