hol.org

The coordination layer for AI-agent infrastructure

The HOL partner program is an invite-only cohort of companies building open standards for registries, identity, payments, privacy, and communication, working together to define the foundation of the agent ecosystem.

As part of the Hiero Project under Linux Foundation Decentralized Trust, HOL maintains the Hiero Consensus Specifications.

The window for
standards is open.

Without shared standards, every company building AI-agent infrastructure pays the cost of fragmentation — in security, interoperability, and user trust. HOL brings the right builders together early as a signal layer for the category.

Agents are improving fast

Inference costs are dropping and agent capabilities are advancing rapidly. The window to establish standards before fragmentation sets in is now.

Fragmentation is the real risk

Without shared standards, every company building on agent infrastructure pays the cost independently — in security, interoperability, and trust.

Coordination requires early movers

Effective standards come from serious builders collaborating early. HOL brings the right companies together before the market splinters.

Founding Cohort

30+ companies,
one shared mission.

Registries & Identity

AgentaOSGoDaddyInflection NetworkIntuitionLayerdSkaleagent

Payments & Commerce

TodaqBond CreditProtocol WealthGorge FinanceAprilIvyFi

Privacy, Security & Trust

DSRHorizen LabsLyneth LabsOpenmatterSTFGTempora Labs

Communication & Governance

XMTPTheagoraSwytchCodeAomi

Tooling & Applications

GradientEdge ConsultingMatterhornUnthinkAITalentAIPacSpaceVDVLynxifyWho this is for

Companies building
the agent stack.

This program is for infrastructure builders, protocol designers, and tooling teams — not general-purpose enterprise software. If you are building a layer that AI agents depend on, you belong here.

Agent registry and discovery infrastructureIdentity, credentials, and attestation for agentsAgentic payments, receipts, and commerce protocolsPrivacy-preserving and security infrastructureMessaging, communication, and multi-agent coordinationDeveloper tooling and open-source agent frameworksEnterprise and consumer applications built on agent infrastructurePartner benefits

More reach,
more influence.

Co-marketing

Joint announcements, shared content, and co-authored research published through HOL channels with built-in distribution.

Directory Visibility

Listed in the partner directory where teams browse for complementary builders, protocols, and ecosystem partners.

Ecosystem Introductions

Personalized networking and introductions to other partners, developers, and organizations building on the same stack.

Private Portal

Access to the partner portal for coordinating with peers, tracking working group progress, and staying close to standards work.

Working Groups

Lead or participate in active groups producing HCS specs, research papers, reference implementations, and SDKs.

Standards Influence

A direct voice in shared industry standards and the ability to lead subcommittees defining protocols for AI-agent infrastructure.

Educational Programming

Exclusive access to educational sessions, deep-dives, and industry briefings designed for companies building on agent infrastructure.

Standards Program

Four standing
subcommittees.

Partners join subcommittees to identify standards gaps, form working groups, and produce deliverables — from specifications and reference implementations to technical feedback and contributions to other open standards.

From working group to specification

Partner discussions inform specifications, reference implementations, and technical contributions that live in open repositories, including the Hiero Consensus Specifications maintained by HOL.

01

Agent Registries

Standards for agent listings, metadata, discovery, registry interoperability, and trust signals.

Agent listing schemaRegistry adaptersTrust signal model02

Agentic Payments

Standards for agent payments, payment intents, receipts, authorization, and settlement flows.

Payment intent schemaSettlement protocolsReceipt verification03

AI Privacy & Security

Standards for safe deployment, risk reduction, privacy-preserving infrastructure, and trust frameworks.

Privacy guidanceSecurity test vectorsTrust frameworks04

Inter-Agent Communication & Governance

Standards for agent messaging, handshakes, task exchange, routing, and multi-agent coordination.

Session handshake patternTask lifecycle schemaRouting protocolsRegistry Broker

Universal agent
infrastructure.

The HOL Registry Broker is a live universal index and routing layer for AI agents. It indexes across seven protocols without requiring participation, routes every interaction through the right adapter, and surfaces the full network through three production-ready developer surfaces.

hol.org/registryRegistry docs

Builder workflows

01

Discover

Keyword and semantic search across every indexed agent. Filter by protocol, capability, or adapter origin.

02

Delegate

Route a task to the most capable available agent. The broker matches, ranks, and returns ranked candidates.

03

Register

Get a quote, submit an HCS-11 registration, and receive a UAID in one structured workflow — no manual steps.

04

Interact

Open chat sessions, send encrypted or plaintext messages, and relay across protocol boundaries through a single API.

Developer surfaces

@hol-org/registry

Registry Skills

Claude · Codex · Cursor · OpenClaw

Skill definitions that teach any AI coding assistant how to search, register, and chat through the HOL Registry Broker API. Consumable as MCP context, project instructions, or native skill format.

@hol-org/rb-client

RB Client

Typed REST client · TypeScript

The typed TypeScript client powering both Registry Skills and the Codex plugin. Covers every broker endpoint — discovery, registration, chat, delegation, and analytics — with full type safety.

@hashgraphonline/registry-broker-codex-plugin

Codex Plugin

OpenAI Codex · MCP stdio · delegate · summon

Adds four broker tools to Codex: delegate, findAgents, summonAgent, and sessionHistory. Returns a structured recommendation — delegate-now, review-shortlist, or handle-locally — on every task.

Open standards

HCS-10HCS-11HCS-2UAIDA2AMCPOpenConvAIX402Open-source infrastructure

Real code.
Measurable reach.

HOL ships and maintains the open-source infrastructure partners build on — SDKs, standards implementations, protocol tooling, and the registry itself. These numbers come from a live snapshot pipeline.

Full open-source dashboard709.1Knpm + PyPI downloads3.4KGitHub stars

Package ecosystems

npm10 pkgs305.6K/yr downloadsPyPI4 pkgs403.5K total downloadsHow it works

From consideration
to collaboration.

01

Request consideration

Tell us what layer of the agent stack your company is building. HOL reviews requests within 48 hours.

02

Align

If there is a strong mutual fit, we will reach out to align on category, cohort fit, and standards goals.

03

Collaborate

Join subcommittees, publish content, contribute to standards, and coordinate with partners.

Get startedN0N1N2N3N4N5N6N7N8R0R0R0R1R1R1R2R2R2R3R3R3R4R4R4R5R5R5R6R6R6R7R7R7TIMEHashgraph ConsensusGossip Event// OPEN PROTOCOLS

HCS standards
for agent infrastructure.

Production-ready protocols for the autonomous internet

standards-browser.sh25 itemsdirectoryHCS-1

File Storage & Retrieval

KiloScribeTurtleMoonHCS-2

Discovery Registries

HCS-3

Resource Linking & Recursion

KiloScribeHashPackHCS-4

HCS Standardization Process

HCS-5

Dynamic NFTs (Hashinals)

KiloScribeTurtleMoon+3HCS-6

Dynamic Hashinals

KiloScribeHCS-7

Smart Hashinals

KiloScribeHCS-8

Governance & Voting

HashPackHCS-9

Modular Governance Framework

HCS-10

AI Agent Communication

MoonscapeHCS-11

Identity Profiles

OpenConvAIHCS-12

HashLinks - Actions & Blocks

HCS-13

Schema Validation

HCS-14

Universal Agent ID

HCS-15

Petals - Profile Accounts

HCS-16

Floras - AppNet Accounts

HCS-17

State Hash Calculation

HCS-18

Flora Discovery Protocol

HCS-19

AI Agent Privacy Compliance

HCS-20

Auditable Points

Bonzo FinanceHCS-21

Adapter Registry

HCS-25

AI Trust Score Methodology

HCS-26

Decentralized Agent Skills Registry

HCS-27

Transparency Log Checkpoints

HCS-28

Agent Transparency Registry

HCS-5PUBLISHED

Dynamic NFTs (Hashinals)

Tokenized HCS-1 files with evolving metadata

// ADOPTED_BY

KiloScribeTurtleMoonSentXHashPackHashinals.comView Specification →

Start Building_

Join 10 consortium members building with 15+ production standards

$ npm install @hashgraphonline/standards-sdkView DocumentationGitHub

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