Agent tools

import Anthropic from "@anthropic-ai/sdk";
import { Naive } from "@usenaive-sdk/server";

const naive = new Naive({ apiKey: process.env.NAIVE_API_KEY! });
const anthropic = new Anthropic();

const kit = naive.forUser(userId).agentTools();

// Annotate the array: a bare literal widens `role` to `string`, which does not
// satisfy Anthropic's `MessageParam` ("user" | "assistant") and fails to compile.
const messages: Anthropic.MessageParam[] = [
  { role: "user", content: "Connect my GitHub and open an issue in acme/web" },
];

while (true) {
  const res = await anthropic.messages.create({
    model: "claude-sonnet-4-5",
    max_tokens: 1024,
    tools: kit.tools,            // <- Naive tools, Anthropic format
    messages,
  });
  messages.push({ role: "assistant", content: res.content });

  const calls = res.content.filter((b) => b.type === "tool_use");
  if (calls.length === 0) break;

  const results: Anthropic.ToolResultBlockParam[] = [];
  for (const call of calls) {
    const out = await kit.handle(call.name, call.input as Record<string, unknown>);
    results.push({ type: "tool_result", tool_use_id: call.id, content: JSON.stringify(out) });
  }
  messages.push({ role: "user", content: results });
}