Stop rebuilding AI routing logic in every project

pnpm add @restormel/keys @restormel/keys-svelte

// src/routes/api/chat/+server.ts (SvelteKit)
import { createResolveMiddleware } from "@restormel/keys";
import { KeyManager } from "@restormel/keys-svelte";

const resolve = createResolveMiddleware({
  providers: ["openai", "anthropic"],
});

export async function POST({ request }) {
  const { model, messages } = await request.json();
  const { provider } = await resolve(model);

  const apiKey =
    provider.type === "openai" ? import.meta.env.OPENAI_API_KEY :
    provider.type === "anthropic" ? import.meta.env.ANTHROPIC_API_KEY :
    undefined;
  if (!apiKey) return new Response("Missing provider access", { status: 500 });

  const res = await fetch(provider.chatUrl, {
    method: "POST",
    headers: { "Authorization": `Bearer ${apiKey}` },
    body: JSON.stringify({ model, messages }),
  });
  return new Response(JSON.stringify(await res.json()));
}

// src/routes/settings/+page.svelte
<script lang="ts">
  const user = { id: "u_123" };
  const keys = {} as unknown;
</script>

<KeyManager
  keys={keys}
  userId={user.id}
  onKeyAdded={(event) => console.log("added", event.detail)}
/>