No, Google (and most other search engines) will not crawl or index pages that are disallowed in the robots.txt file, including API endpoints. The robots.txt file acts as a set of instructions for web crawlers, providing guidelines on which parts of a website they are allowed to access and crawl.

When you disallow a specific URL or directory in the robots.txt file, search engine bots (like the Googlebot) will honor this directive and refrain from crawling or indexing those URLs. This includes URLs related to APIs, backend services, or any other sensitive parts of your website that you wish to keep private.

For example, if you have an API endpoint at https://example.com/api/, and you want to prevent search engines from accessing it, you can disallow it in the robots.txt file like this:

javascript
User-agent: * Disallow: /api/

With this configuration, Google and other search engines will not crawl or index any URLs starting with /api/ on your website, including the API endpoint.

Keep in mind that while the robots.txt file can prevent search engine crawlers from accessing specific URLs, it does not provide strong security or access control for sensitive data. If you have sensitive data that should not be publicly accessible, it's essential to implement proper authentication and authorization mechanisms at the application level to restrict access to authorized users only.

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