OpenAI Agents SDK

npm install rebuno @openai/agents openai zod

import { OpenAIResponsesModel } from "@openai/agents";
import OpenAI from "openai";
import { rebunoFetch } from "rebuno";

const client = new OpenAI({ fetch: rebunoFetch });
const model = new OpenAIResponsesModel(client, "gpt-5.5");

import { tool } from "@openai/agents";
import { defineTool } from "rebuno";
import { z } from "zod";

const sendEmail = tool({
  name: "send_email",
  description: "Email the support summary.",
  parameters: z.object({ body: z.string() }),
  execute: defineTool({
    name: "send_email",
    idempotency: "at_most_once",
    execute: async ({ body }: { body: string }) => mail.send("ops@acme.com", body),
  }),
  errorFunction: null,
});

import { Agent as OpenAIAgent, run } from "@openai/agents";
import { Agent } from "rebuno";

async function process(input: { query: string }) {
  const client = new OpenAI({ fetch: rebunoFetch });
  const specialist = new OpenAIAgent({
    name: "support specialist",
    model: new OpenAIResponsesModel(client, "gpt-5.5"),
    tools: [sendEmail],
  });
  const result = await run(specialist, input.query);
  return { answer: result.finalOutput };
}

const agent = new Agent("support");
await agent.serve({ port: 5000 }, process);