Find what you can build with UCP.

Official conformance test suite for validating UCP protocol compliance.

The official JavaScript/TypeScript SDK for UCP, maintained by the Universal Commerce Protocol organization.

The official Python library for UCP with Pydantic models, maintained by the Universal Commerce Protocol organization.

Official JSON schema definitions for UCP protocol messages and payloads.

Google's secure payment authorization protocol for AI agents, providing cryptographic consent for UCP transactions.

Hosted UCP identity registry and provider-neutral Shopping MCP skill for open-source agents, covering product search, buyer-confirmed carts, and merchant checkout handoff.

Google's open protocol for agent-to-agent communication, used alongside UCP for multi-agent commerce orchestration.

Open standard for AI-native commerce, complementary to UCP, with a focus on high-level commerce action orchestration.

Bilingual agent skill library mapping UCP checkout, identity linking, fulfillment, discount, order management, and AP2 payment mandate workflows into reusable SKILL.md files.

Agent-ready TypeScript starter kit for building keyless Shopify Global Catalog search apps with a typed client, configurator, playground, and demo storefront.

Client-side demo showing Gemini coordinating a mortgage-transfer workflow with A2A handoff, UCP rate discovery, and AP2 execution.

Google's open-source framework for building, evaluating, and deploying multi-step AI agents, with UCP commerce integration examples.

Google Search's AI-powered mode that uses UCP to enable direct purchases from search results without leaving Google.

Google's AI assistant with native UCP shopping capabilities, enabling conversational product discovery and purchase.

Google's simplified UCP onboarding flow in Merchant Center, rolling out to US merchants through 2026.

Official Google Pay developer documentation for Universal Commerce Protocol integration and implementation concepts.

Google's cross-merchant intelligent shopping cart launching in Search and Gemini; backed by Gemini reasoning models and native Google Wallet with UCP checkout.

Open-source boilerplate for building niche Shopify Global Catalog product finders on UCP with a Python backend and single-file HTML UI.

Open-source trust framework from Mastercard that creates tamper-resistant records of AI agent authorizations, aligned with UCP and AP2 standards.

Open-source headless commerce framework whose modular backend could support a custom UCP integration; no public UCP package has been verified.

Anthropic's open protocol for connecting AI models to external data sources and tools, complementary to UCP.

NVIDIA AI Blueprint reference implementation for ACP and UCP merchant-controlled checkout, delegated payments, Apps SDK MCP, and agent orchestration.

Open-source Salesforce Commerce Cloud cartridge that implements UCP checkout for SFCC storefronts.

Shopify's developer toolkit for implementing UCP on any Shopify storefront, enabling AI agent-initiated checkouts.

Official Shopify command-line shopping skill for AI agents, powered by UCP, with product search, carts, checkout handoff, and order tracking.

Universal search app across Shopify stores, powered by Shopify UCP for product discovery across the Shopify merchant ecosystem.

Cross-border buying-agent platform for LATAM buyers using Shopify Catalog MCP, UCP checkout, and delegated Shop Pay.

Card-linked installment payments platform backing UCP to enable flexible pay-over-time options in agentic commerce flows.

Open-source TYPO3 v14 extension that publishes a UCP merchant manifest, catalog, simulated checkout, and agent checkout UI.

Open-source TypeScript demo suite implementing UCP 2026-04-08 and AP2 across shopping agent, merchant, credentials provider, and PSP services.

Official sample UCP agent using Google ADK and A2A Protocol, demonstrating AI-to-merchant checkout via UCP.

New optional UCP spec capability (March 2026) enabling AI agents to add multiple items to a shopping cart at once from a single store, matching how human shoppers behave.

New optional UCP spec capability (March 2026) allowing AI agents to retrieve real-time product details from retailer catalogs, including variants, inventory, and pricing.

Unofficial industry-standard UCP validator that lints live manifests, tests API latency, and generates verified badges.

Browser extension that detects UCP manifests on any website and surfaces agent-readiness signals in real time.

Community-built interactive playground for experimenting with UCP, built following Google's developer guide.

Diagnostic tool from AwesomeUCP for validating Universal Commerce Protocol implementations end-to-end.

UCP spec capability (March 2026) that preserves shopper loyalty and member benefits (pricing, free shipping) across UCP-integrated platforms when shoppers are logged in.

UCP payload validator and OpenAI/ChatGPT agentic commerce schema validator to ensure products are AI-commerce ready.

Directory of verified UCP-enabled merchants compatible with AI shopping agents, curated by the AwesomeUCP community.

Free UCP profile validator and generator. Checks Schema.org compliance, product feed quality, and AI commerce readiness.

Service that transforms existing e-commerce stores into UCP-compatible endpoints without platform migration.

Python agent framework for fintech and commerce with first-class UCP support for building AI shopping agents.

Open-source AI shopping assistant built with the Upsonic framework, demonstrating the full UCP purchasing flow.

Python client library for UCP by Upsonic, providing a high-level API for agent-side UCP interactions.

Open-source Lennox HVAC voice sales agent that references UCP technology for an agentic commerce sales and booking flow.

Open-source Node.js and TypeScript commerce framework whose plugin system could support a custom UCP integration; no public UCP plugin has been verified.

VirtoCommerce module repository for adding Universal Commerce Protocol support to VirtoCommerce storefronts and commerce deployments.

Open-source headless commerce frontend framework built on Vue and Nuxt with a unified SDK that abstracts 50+ commerce and CMS backend integrations behind a consistent interface.