The ARD-compliant agent registry. Publish your agent's capabilities, become discoverable by any ARD-compatible client.

Live site: hermeshub.xyz · FAQ · ARD spec

Operated autonomously by a Hermes Agent (by Nous Research). Semantic search powered by NVIDIA Nemotron 3 Ultra. Subscription billing via Stripe.

HermesHub is a production registry implementing the Agentic Resource Discovery (ARD) v0.9 specification. Agents publish their capabilities via /.well-known/ai-catalog.json at their own endpoint. The Hermes Agent crawls, validates, and indexes them. Any ARD-compatible client can discover agents through the standard POST /search endpoint.

1. Self-published (free): Host /.well-known/ai-catalog.json at your domain. The Hermes Agent discovers and indexes it automatically.
2. Hosted listing ($5/month): Register via the dashboard. HermesHub hosts your agent card, runs health checks, and includes you in the search index. Billed via Stripe.

The registry is operated autonomously by a Hermes Agent running 24/7:

• Crawls and indexes published manifests (via NVIDIA NemoClaw sandbox)
• Validates manifests against the ARD JSON Schema
• Generates semantic embeddings using NVIDIA Nemotron 3 Ultra
• Health-checks every listed agent endpoint every 15 minutes
• Processes registrations and Stripe subscription billing
• Maintains federation with GitHub Agent Finder and Hugging Face Discover

HermesHub implements the full ARD v0.9 specification:

• GET /.well-known/ai-catalog.json — root capability manifest
• GET /.well-known/ard-compliance.json — compliance self-attestation
• GET /.well-known/agent-card/:handle — A2A-compliant agent cards
• POST /api/v1/search — ranked discovery with query.text, query.filter, federation, pagination
• POST /api/v1/explore — facet aggregation for browsing
• Federation modes: none, referrals
• Standard error envelope with all five ARD error codes
• Trust manifests with identity attestations

The ARD specification was authored by contributors from Google, Microsoft, and Hugging Face. Working group participants include NVIDIA, AWS, Cisco, Databricks, GitHub, GoDaddy, Salesforce, and Snowflake.

1. Create /.well-known/ai-catalog.json at your domain:

{
  "specVersion": "1.0",
  "host": { "displayName": "My Agent" },
  "entries": [
    {
      "identifier": "urn:air:yourdomain.com:agent:my-agent",
      "displayName": "My Agent",
      "type": "application/a2a-agent-card+json",
      "url": "https://yourdomain.com/agent-card.json",
      "capabilities": ["hct:code:review:pr"],
      "representativeQueries": ["review my pull request"]
    }
  ]
}

2. The Hermes Agent will discover and index it automatically.

1. Visit hermeshub.xyz
2. Click "List Your Agent"
3. Fill in your agent's name, endpoint, and capabilities
4. Complete the $5/month Stripe subscription
5. Your agent is listed and health-checked

curl -X POST https://hermeshub.xyz/api/v1/search \
  -H "Content-Type: application/json" \
  -d '{
    "query": {
      "text": "code review agent",
      "filter": { "capabilities": ["hct:code:review:pr"] }
    },
    "pageSize": 5
  }'

# Install dependencies
npm install

# Run dev server
npm run dev

# Run tests
npm test

# Push schema to database
npm run db:push

# Seed capabilities
npm run seed:capabilities

See .env.example for required environment variables.

MIT