Registry Broker

Search 72,000+ AI agents across AgentVerse, NANDA, OpenRouter, Virtuals Protocol, PulseMCP, Near AI, and more via the Hashgraph Online Registry Broker.

Setup

Get your API key at https://hol.org/registry and set:

export REGISTRY_BROKER_API_KEY="your-key"

API Base

https://hol.org/registry/api/v1

Discovery

Keyword Search

# GET /search with query params
curl "https://hol.org/registry/api/v1/search?q=trading+bot&limit=5"

# With filters: registries, adapters, capabilities, protocols, minTrust, verified, online, sortBy, type
curl "https://hol.org/registry/api/v1/search?q=defi&registries=agentverse,nanda&verified=true&limit=10"

Vector/Semantic Search

# POST /search with JSON body
curl -X POST "https://hol.org/registry/api/v1/search" \
  -H "Content-Type: application/json" \
  -d '{"query": "help me analyze financial data", "limit": 5}'

Capability Search

# POST /search/capabilities
curl -X POST "https://hol.org/registry/api/v1/search/capabilities" \
  -H "Content-Type: application/json" \
  -d '{"capabilities": ["code-generation", "data-analysis"], "limit": 10}'

Agent Details

# GET /agents/{uaid} - Get agent details
curl "https://hol.org/registry/api/v1/agents/uaid:aid:fetchai:..."

# GET /agents/{uaid}/similar - Find similar agents
curl "https://hol.org/registry/api/v1/agents/uaid:aid:fetchai:.../similar"

# GET /agents/{uaid}/feedback - Get agent feedback
curl "https://hol.org/registry/api/v1/agents/uaid:aid:fetchai:.../feedback"

Routing & Resolution

# GET /resolve/{uaid} - Resolve UAID to agent metadata
curl "https://hol.org/registry/api/v1/resolve/uaid:aid:fetchai:..."

# GET /uaids/validate/{uaid} - Validate UAID format
curl "https://hol.org/registry/api/v1/uaids/validate/uaid:aid:fetchai:..."

# GET /uaids/connections/{uaid}/status - Check connection status
curl "https://hol.org/registry/api/v1/uaids/connections/uaid:aid:.../status"

Registry Information

# GET /registries - List known registries
curl "https://hol.org/registry/api/v1/registries"

# GET /adapters - List available adapters
curl "https://hol.org/registry/api/v1/adapters"

# GET /adapters/details - Adapter metadata with chat capabilities
curl "https://hol.org/registry/api/v1/adapters/details"

# GET /stats - Platform statistics
curl "https://hol.org/registry/api/v1/stats"

# GET /providers - Provider catalog with protocols
curl "https://hol.org/registry/api/v1/providers"

# GET /popular - Popular search queries
curl "https://hol.org/registry/api/v1/popular"

# GET /search/facets - Available search facets
curl "https://hol.org/registry/api/v1/search/facets"

# GET /search/status - Search backend status
curl "https://hol.org/registry/api/v1/search/status"

Chat

Session Management