A neutral landscape analysis of AI agent payment protocols (x402, MPP, L402, Google AP2, Visa TAP + ICC, Mastercard Agent Pay, Amex ACE, Google/Shopify UCP, OpenAI ACP, and others). Maintained by Genesis Software Group, Copenhagen. Updated April 2026. CC BY 4.0.
Official TypeScript/Node.js SDKs for the InFlow payments platform - x402 and MPP (Machine Payments Protocol) integration for sellers and buyers.
Organization profile and shared community health files for InFlow.
Vendor-neutral, quoted crosswalk of 14 payment providers/protocols (AP2, Stripe Issuing, Privacy.com, Lithic, AgentCard, Crossmint, Coinbase CDP, Circle, Tempo, Payman, Skyfire, x402, Visa Intelligent Commerce, Mastercard Agent Pay): how each caps AI agent spending, exact field names, units, and enforcement points, sourced to a verbatim quote.
Rust SDK for InFlow MPP and x402 Buyer and Seller integrations.
Go SDK for InFlow MPP and x402 Buyer and Seller integrations.
Public SDK contracts, schemas, examples, test vectors, and conformance artifacts for InFlow.
Python SDK for InFlow MPP and x402 Buyer and Seller integrations.
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