# SDK Quickstart

`@unbrowse/sdk` is the thin TypeScript client for the local runtime. It auto-spawns the runtime if one is not running.

```bash
npm install @unbrowse/sdk
```

```ts
import { Unbrowse } from "@unbrowse/sdk";

// Probe localhost, spawn the runtime if nothing is listening. The common case.
const u = await Unbrowse.local();

const resolved = await u.resolve({
  intent: "list tomorrow's events",
  url: "https://calendar.google.com",
});

const result = await u.execute(resolved, { projection: { raw: true } });
```

Three factories, three lifecycles:

* `Unbrowse.local()` probes `127.0.0.1:6969` and spawns the runtime if needed. Right most of the time.
* `Unbrowse.connect(url)` attaches to a runtime you already manage.
* `Unbrowse.spawn({ port })` always spawns a fresh, owned runtime. Useful in tests.

Reused routes can be priced. A paid call returns an HTTP 402 that the SDK raises as a typed error you can catch and retry after settling payment; brand-new agents get a sponsored allowance first. The full SDK reference, including the payment helpers and the typed error hierarchy, lives in the `sdk/` section of this space and in the package README.

The SDK is MIT licensed. The runtime it talks to is distributed as a binary. The split is described in the [Open Source Notice](/reference/open-source-notice.md).


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.unbrowse.ai/for-developers/sdk-quickstart.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.