AIP (Agent Internet Protocol) is the foundational protocol layer for the agentic web. While most teams build agents or marketplaces, AIP defines the protocol they will speak. We authored two formal standards: a Solana SIMD draft (active sRFC) for on-chain agent identity, and a W3C DID Method (did:aip). The reference implementation runs live on Solana Devnet: two Anchor programs, an open-source SDK that ships a paid agent in three lines of code, and end-to-end agent orchestration.