TanStack AI

npm install @tanstack/ai @tanstack/ai-openai zod

import { chat } from "@tanstack/ai";
import { openaiCompatible } from "@tanstack/ai-openai/compatible";

const devupai = openaiCompatible({
  name: "devupai",
  baseURL: "https://api.devupai.com/v1",
  apiKey: process.env.DEVUP_API_KEY ?? "",
  models: ["deepseek-ai/DeepSeek-V4-Pro"],
});

const text = await chat({
  adapter: devupai("deepseek-ai/DeepSeek-V4-Pro"),
  messages: [{ role: "user", content: "Reply with exactly: Salam DEVUP" }],
  stream: false,
});
console.log(text);

for await (const chunk of chat({
  adapter: devupai("deepseek-ai/DeepSeek-V4-Pro"),
  messages: [{ role: "user", content: "Count from 1 to 5, separated by spaces." }],
})) {
  if (chunk.type === "TEXT_MESSAGE_CONTENT") process.stdout.write(chunk.delta);
}
console.log();

import { toolDefinition } from "@tanstack/ai";
import { z } from "zod";

const getOrderStatus = toolDefinition({
  name: "getOrderStatus",
  description: "Look up the delivery status of an order by its ID.",
  inputSchema: z.object({ orderId: z.string() }),
}).server(async ({ orderId }) => ({ orderId, status: "shipped" }));

const toolCalls: string[] = [];
let answer = "";
for await (const chunk of chat({
  adapter: devupai("deepseek-ai/DeepSeek-V4-Pro"),
  messages: [{ role: "user", content: "What is the status of order A-100?" }],
  tools: [getOrderStatus],
})) {
  if (chunk.type === "TOOL_CALL_START") toolCalls.push(chunk.toolCallName);
  if (chunk.type === "TEXT_MESSAGE_CONTENT") answer += chunk.delta;
}
console.log(toolCalls, answer);

const city = await chat({
  adapter: devupai("deepseek-ai/DeepSeek-V4-Pro"),
  messages: [{ role: "user", content: "Which city is the capital of Algeria?" }],
  outputSchema: z.object({
    city: z.string().describe("Name of the capital city"),
    country: z.string().describe("Country the city is in"),
  }),
});
console.log(city);