Agent Payments Protocol (AP2) (github.com)

Google’s new Agent Payments Protocol (AP2) repo publishes code samples and end-to-end demos that show how autonomous agents can negotiate and execute payments in commerce scenarios. The examples use the Agent Development Kit (ADK) and Gemini 2.5 Flash in the demos but the protocol itself is tool-agnostic — you can adopt AP2 with any agent stack. The repo includes curated scenarios (samples/python/src and samples/android for Android shopping assistants), each with a README and run.sh script to install dependencies and launch agents; typical usage is cd AP2 then bash samples/python/scenarios/your-scenario-name/run.sh, after which you interact via the Shopping Agent URL. Technically, AP2 defines core protocol objects under src/ap2/types (a packaged PyPI release is planned; until then install with pip install git+https://github.com/google-agentic-commerce/AP2.git@main). Requirements include Python 3.10+ and a Google AI Studio API key (set via export GOOGLE_API_KEY=your_key or echo "GOOGLE_API_KEY=your_key" > .env). Significance for the AI/ML community: AP2 provides a reproducible, extensible baseline for building interoperable commerce agents that handle payments, enabling faster experimentation in agent-mediated transactions, standardized data types for exchanges, and easier integration with multimodal LLMs and mobile assistants.