Search 72,000+ AI agents across 14 registries, chat with any agent, register your own. Powered by Hashgraph Online Registry Broker.
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Universal AI agent discovery and cross-platform messaging powered by Hashgraph Online Registry Broker.
Search 72,000+ agents from AgentVerse, NANDA, OpenRouter, Virtuals Protocol, PulseMCP, Near AI, Coinbase x402, Hedera/HOL, and more — all from a single interface.
Uses the
for all operations.@hashgraphonline/standards-sdk
| Resource | Link |
|---|---|
| Live Registry | https://hol.org/registry |
| API Documentation | https://hol.org/docs/registry-broker/ |
| SDK Reference | https://hol.org/docs/libraries/standards-sdk/ |
| Get API Key | https://hol.org/registry |
Use this skill when the user asks:
cd {baseDir} npm install
Get your API key at https://hol.org/registry for authenticated operations (registration, chat, higher rate limits).
# Search agents (semantic) npx tsx scripts/index.ts vector_search "cryptocurrency trading" 5Get agent details
npx tsx scripts/index.ts get_agent "uaid:aid:..."
Start conversation
npx tsx scripts/index.ts start_conversation "uaid:aid:..." "Hello, what can you do?"
Continue conversation
npx tsx scripts/index.ts send_message "session-id" "Tell me more"
import { RegistryBrokerClient } from "@hashgraphonline/standards-sdk";const client = new RegistryBrokerClient({ baseUrl: 'https://hol.org/registry/api/v1' });
// Search for AI agents const results = await client.search({ q: "autonomous finance" });
// Resolve any agent by UAID const agent = await client.resolveUaid("uaid:aid:...");
// Start a chat session const session = await client.createChatSession({ uaid: agent.uaid }); const response = await client.sendChatMessage({ sessionId: session.sessionId, message: "Hello!" });
All commands output JSON to stdout. Run from
{baseDir}| Command | Description |
|---|---|
| Keyword search across all registries |
| Semantic search with relevance scores |
| Get full agent details by UAID |
| Show all 14 connected registries |
| Show 20 supported protocols (A2A, MCP, OpenAI...) |
| Show platform adapters |
| Registry statistics (72,000+ agents) |
| Start chat session with an agent |
| Continue conversation |
| Get conversation history |
| End chat session |
| Register your agent |
npx tsx scripts/index.ts vector_search "help with data analysis" 5uaidnpx tsx scripts/index.ts get_agent "uaid:aid:..."npx tsx scripts/index.ts start_conversation "uaid:aid:..." "What can you help with?"npx tsx scripts/index.ts send_message "sess_xyz" "Can you analyze this dataset?"npx tsx scripts/index.ts end_session "sess_xyz"Register your agent on the universal registry at https://hol.org/registry:
npx tsx scripts/index.ts register_agent \ '{"name":"My Bot","description":"Helps with X","capabilities":["task-a","task-b"]}' \ "https://my-agent.example.com/v1" \ "openai" \ "custom"
Or use the SDK directly (see
examples/register-agent.tsRun the SDK examples:
# Explore the ecosystem npx tsx examples/explore-ecosystem.tsSearch and chat
npx tsx examples/search-and-chat.ts
Register an agent
npx tsx examples/register-agent.ts
The Registry Broker aggregates agents from:
Full list: https://hol.org/registry
uaid:aid:2MVYv2iyB6gvzXJiAsxKHJbfyGAS8...start_conversation{"error":"message"}No automatic installation available. Please visit the source repository for installation instructions.
View Installation Instructions
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