# Your first fetch

`obscura fetch` loads a URL, runs its JavaScript, and prints the result.

### Load a page

```bash
obscura fetch https://example.com
```

Prints the rendered HTML.

### Run JavaScript with `--eval`

```bash
obscura fetch https://example.com --eval "document.title"
```

```
"Example Domain"
```

Returns JSON:

```bash
obscura fetch https://news.ycombinator.com \
  --eval "Array.from(document.querySelectorAll('.titleline a')).slice(0, 5).map(a => a.textContent)"
```

### Multi-statement eval

`--eval` evaluates one expression. For multiple statements, wrap in an IIFE:

```bash
obscura fetch https://example.com --eval "(function(){
  const links = document.querySelectorAll('a');
  return Array.from(links).map(a => a.href);
})()"
```

A bare block starting with `const` or `let` returns `null` because V8 gives top-level declarations an empty completion value.

### Wait for the right moment

CLI default is `load`. For faster returns on slow sites:

```bash
obscura fetch https://my-spa.example --wait-until domcontentloaded --eval "document.title"
```

| Level              | Returns when                            |
| ------------------ | --------------------------------------- |
| `domcontentloaded` | HTML parsed, scripts ran                |
| `load`             | All subresources finished (default)     |
| `networkidle2`     | ≤2 network connections active for 500ms |
| `networkidle0`     | 0 network connections active for 500ms  |

(When driving obscura via Puppeteer or Playwright the default is `domcontentloaded` to match client expectations.)

### Common flags

```
--user-agent "..."        Override the User-Agent
--timeout 30                Navigation timeout in seconds (default 30)
--wait 5                    Extra wait after the page settles, in seconds (default 5)
--selector ".main"          CSS selector to narrow output to
--proxy http://host:port    Route through a proxy
--stealth                   Stealth client (TLS fingerprint, tracker blocking)
-o, --output file.html      Write output to a file
-q, --quiet                 Suppress info logging
```

Full list: [CLI reference](/reference/cli-reference.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.obscura.sh/quickstart/your-first-fetch.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.