8. Extensibility and Customization - HugAI v2 Specification¶

This section describes how the HugAI v2 protocol can be extended and customized to adapt to new needs, agents, capabilities, and scenarios.

8.1. Principles of Extensibility¶

• The protocol is designed to be modular and evolutionary.
• It allows the addition of new message types, capabilities, agents, and workflows without breaking existing compatibility.
• It is recommended to follow naming conventions and document all extensions.

8.2. Adding New Message Types or Capabilities¶

• New messages: Additional methods can be defined following the JSON-RPC scheme, for example: agent/customAction, tool/notify, etc.
• New capabilities: Agents can announce additional capabilities in their registration (capabilities), for example: "code-review": true.
• New agents: Simply register the agent and its capabilities, following the standard flow.

8.3. Extension Example (Custom Message)¶

Definition of a new message for security analysis:

{
  "jsonrpc": "2.0",
  "method": "agent/securityScan",
  "params": {
    "target": "main.ts",
    "level": "deep"
  },
  "id": 10
}

The agent can announce the new capability:

{
  "agentId": "security-agent-1",
  "capabilities": { "security-scan": true }
}

8.4. Best Practices for Extension and Compatibility¶

• Use clear prefixes for custom methods (agent/, tool/, governance/, etc.).
• Document each extension and its purpose.
• Maintain backward compatibility whenever possible.
• Validate extensions before deploying them in critical environments.
• Share useful extensions with the community for possible standardization.

8.5. Interoperability and Modularity¶

• Extensions should be optional and negotiable between agents and the system.
• Agents are recommended to ignore unknown messages/fields unless they are critical.
• Modularizing capabilities and workflows facilitates integration with other systems and protocol evolution.

Note: Extensibility is key to the evolution of the protocol. It is recommended to keep a record of extensions and promote interoperability between implementations.