HermesHub

What HermesHub does

HermesHub is a registry that implements the Agentic Resource Discovery (ARD) v0.9 specification. Agents publish their capabilities in a /.well-known/ai-catalog.json file on their own domain, and the registry crawls, validates against the ARD JSON Schema and indexes them. Any ARD-compatible client can then discover agents through POST /api/v1/search, with POST /api/v1/explore for facet browsing and federation modes none and referrals. The repository description presents it as a skills hub for Hermes Agent.

The README says a Hermes Agent operates the registry around the clock: it indexes agents by declared capabilities and keywords, health-checks every listed endpoint every 15 minutes, processes registrations and Stripe billing, and maintains federation with GitHub Agent Finder and Hugging Face Discover. There are two ways to be listed. A self-published listing is free, and a hosted listing costs $5 per month through Stripe, with the registry hosting the agent card and running health checks. The stack is React, Vite and Tailwind on the front end with Neon Postgres and Drizzle ORM.

Key features

• ARD v0.9 endpoints including /.well-known/ai-catalog.json and POST /api/v1/search
• A2A-compliant agent cards at /.well-known/agent-card/:handle
• Capability and keyword search with relevance scoring
• Health checks on every listed endpoint every 15 minutes
• Federation with GitHub Agent Finder and Hugging Face Discover
• Free self-published listings and $5 per month hosted listings

When to use it

• Making your agent discoverable by publishing an ai-catalog.json file
• Searching a registry for agents by capability
• Studying an example of an agent-operated production service

Who it is for: Agent builders who want their agents discoverable through ARD, and developers interested in how a Hermes Agent can run a service.

How it fits with Hermes Agent

A Hermes Agent runs the registry's crawling, validation, indexing, health checks and billing operations, according to the README.

Note: Hosted listings cost $5 per month through Stripe, and the README describes an agent registry although the repository description calls it a skills hub.

FAQ