Universal-Commerce-Protocol/ucp

Health v2 · maintenance only

Adoption not part of the score

3334 stars · 450 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

The Universal Commerce Protocol (UCP) is an open standard and specification for interoperable, agentic commerce, defining capabilities like checkout, order, and identity linking so AI agents, platforms, businesses, and payment providers can transact without custom integrations. This repository hosts the specification, JSON schemas, documentation, and Python tooling for implementing the protocol.

Use cases

• implement agentic checkout for an online store
• let AI shopping agents discover and purchase from merchants
• add secure AI-agent payment authorization with AP2 mandates
• declare commerce capabilities for autonomous platform discovery
• build a payment provider integration for agent-led transactions
• standardize checkout APIs across multiple commerce platforms

When to choose

• you want your business or platform to support AI-agent-driven commerce
• you need a standardized, vendor-neutral checkout and order protocol
• you're building payment or credential services for agentic transactions
• you want interoperability with major industry backers like Google, Shopify, and Stripe

When to avoid

• you need a simple traditional e-commerce storefront without agent integration
• your commerce flows are entirely internal with no third-party interoperability needs
• you require a fully settled, frozen standard - UCP is still evolving rapidly

Facets

library · maturity active

api-framework sdk auth security documentation e-commerce apis large-language-models fintech python cross-platform cloud agentic-commerce open-standard protocol-specification checkout payments ap2 json-schema interoperability ai-agents web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Universal-Commerce-Protocol/ucp")