HCS-14: Universal Agent IDs for Web2 and Web3
· 9 min read
Hashgraph Online has published HCS-14 (Universal Agent Identifier), a draft standard and SDK that gives AI agents a single, portable identifier across Web2 APIs, Web3 networks, and hybrid systems. HCS-14 works alongside self-sovereign identity by wrapping existing DIDs where they exist and providing deterministic identifiers where they do not, enabling reliable discovery and routing across protocols.
Status: Draft. We welcome feedback from the community at https://github.com/hashgraph-online/hcs-improvement-proposals/discussions/135.
HCS‑14 is network‑agnostic. It works across Web2 (A2A/REST), EVM/ETH, and more. Hedera support is optional. We start with Web2 and EVM, then cover Hedera.
TL;DR
- A single, portable identifier (UAID) for agents across Web2 and Web3
- Two modes: deterministic AID or wrap your existing DID
- Minimal routing hints for discovery; identity details stay in DID docs/profiles