Awesome Agentic Commerce

A curated list of protocols, specs, SDKs, and tools powering the emerging agentic commerce stack: AI agents that discover, buy, and manage orders autonomously.

Maintained by Bitrefill. Contributions welcome.

Contents

• Why agentic commerce
• Commerce protocols
  • ACP (Agentic Commerce Protocol)
  • AP2 (Agent Payments Protocol)
  • UCP (Universal Commerce Protocol)
  • MPP (Machine Payments Protocol)
• Crypto payment rails
  • x402
  • L402
  • Fewsats
• Fiat payment rails
  • Stripe
  • Visa
  • Mastercard
  • PayPal
  • Cloudflare
• Protocol proposals and standards
  • Ethereum
  • Solana
  • Cross-chain and standards bodies
• Ecosystem
  • OpenAI
  • Shopify
  • Bitrefill
• Further reading
• How the pieces fit together

Why agentic commerce

AI agents are moving from “answer questions” to “get things done,” including browsing products, comparing prices, paying, and managing orders on behalf of users. This requires new protocols for agent-to-agent communication, commerce standards that machines can parse, and payment rails that work without accounts, sessions, or human intervention.

Commerce protocols

How agents interact with merchants: product discovery, cart building, checkout, and order management.

ACP (Agentic Commerce Protocol)

Open standard by OpenAI and Stripe. Powers ChatGPT Instant Checkout; supports 1M+ merchants via Shopify and Etsy. Payment-infrastructure agnostic.

• ACP Documentation - Primary docs on OpenAI’s developer platform.
• ACP GitHub Repository - Specification and implementation (Apache 2.0).
• Stripe ACP Integration - Stripe’s integration guide.
• Stripe Blog: Developing an Open Standard - Technical overview and rationale.

AP2 (Agent Payments Protocol)

Google’s open protocol for payment-agnostic agent-led transactions. Uses Verifiable Digital Credentials (VDCs) and a three-mandate model (Intent, Cart, Payment). Backed by 60+ organizations including Adyen, Mastercard, PayPal, Visa, and Coinbase.

• AP2 Official Site - Primary documentation.