Add OpenAI Agents SDK tool integration

[0xtus]

Description

Create an adapter that wraps AzethKit methods as OpenAI Agents SDK function tools, enabling OpenAI-powered agents to use Azeth for payments, service discovery, and reputation.

Why

The OpenAI Agents SDK is rapidly growing. Providing a first-class integration lets OpenAI agent developers add economic capabilities without learning a new framework.

Example

import { AzethKit } from '@azeth/sdk';
import { Agent } from '@openai/agents';

const azeth = await AzethKit.create({ privateKey: '0x...', chain: 'baseSepolia' });

const agent = new Agent({
  tools: azeth.asOpenAITools(), // Returns OpenAI-compatible function tools
});

Scope

• Wrap key methods as OpenAI function tool definitions
• Handle tool call routing back to AzethKit
• Example showing an OpenAI agent paying for services