Hashgraph Online today launched HCS-14: Universal Agent Identifier (UAID), an open standard and SDK that gives AI agents a single, portable identity that works consistently across web2 APIs, web3 networks, and hybrid systems. HCS-14 introduces a dual-method DID scheme that preserves self-sovereign identity where it exists and provides deterministic IDs where it doesn’t. This enables reliable discovery, routing, and interoperability across protocols.

Majuro, Marshall Islands September 11, 2025 --(PR.com)-- Hashgraph Online today announced HCS-14, the Universal Agent Identifier (UAID). HCS-14 gives AI agents a single, portable identity that works consistently across Web2 APIs, Web3 networks, and hybrid systems. It preserves self-sovereign identity where it exists and provides deterministic IDs where it does not, enabling reliable discovery, routing, and interoperability across protocols.

“Identity fragmentation has been the biggest barrier to cross-protocol agent ecosystems,” said Michael Kantor, President of Hashgraph Online. “HCS-14 delivers a simple, durable way to identify agents everywhere, from REST and gRPC to Hedera and EVM, without compromising sovereignty or operational practicality. It is the missing layer for a truly interoperable agent economy.”

What HCS-14 is
HCS-14 is a universal way to identify AI agents across networks and protocols. It works in two complementary ways:

• Creates a deterministic identifier for agents that do not yet have a decentralized identifier (DID).
• Wraps existing DIDs with a small set of routing details so agents can be reliably found across protocols.
Why it matters
• One identity that works across Web2 and Web3
• Stable and deterministic; endpoint changes do not break IDs
• Works with existing DIDs; no changes needed to sovereign identities
• Built-in routing across protocols for reliable discovery
• Aligned with established standards including W3C DIDs and CAIP-10
• Privacy by design; excludes mutable endpoints and purpose semantics from the identifier
Who it’s for
• Developers building agents that must work across multiple protocols
• Teams standardizing identity and routing for fleets of agents
• Enterprises seeking vendor-neutral interoperability
• Open-source communities converging on shared primitives for agent discovery
Where it works

HCS-14 supports agents across communication protocols such as but not limited to Hedera HCS-10, Google Agent-to-Agent (A2A), Anthropic Model Context Protocol (MCP), NANDA, ACP Virtuals and IBM ACP, OLAS/Autonolas discovery, and common transports such as REST, gRPC, WebSocket, and MQTT.

Standards alignment
HCS-14 builds on W3C DID principles and uses chain-qualified native account identifiers (CAIP-10) where applicable. It provides a clear path for compatibility with EVM agent registries and Trust over IP profiles (informative) while keeping identifiers simple and durable.

Status and availability
• Status: Draft (open for community feedback)
• Specification (Draft): https://hashgraphonline.com/docs/standards/hcs-14
• Standards SDK (reference implementation and docs): https://hashgraphonline.com/docs/libraries/standards-sdk
• Discussion and feedback: https://github.com/hashgraph-online/hcs-improvement-proposals/discussions/135

Developers can begin using HCS-14 today in Node and browser environments. Deterministic IDs are generated locally without network calls. When wrapping existing DIDs, the SDK integrates with Hedera via Hiero when needed.

About Hashgraph Online
Hashgraph Online is a consortium focused on building the autonomous, on-graph internet with Hashgraph Consensus Standards (HCS) on the Hedera network. We collaborate across companies, open source maintainers, and product teams to create interoperable protocols, robust SDKs, and production-grade tools. Learn more at https://hashgraphonline.com

Contact Information:
Hashgraph Online DAO LLC
Michael Kantor
?(201) 430-5562?
Contact via Email
hashgraphonline.com

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