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Bing IndexNow Documentation Key Sections Explained

The official Bing IndexNow documentation is accurate but terse. This guide walks through the most important sections, explains common misunderstandings, and gives you a practical implementation summary.

Where to Find the Official Documentation

Bing IndexNow Documentation

https://www.bing.com/webmasters/indexnowdoc

Bing's primary IndexNow reference API endpoints, request formats, response codes, and key file requirements.

IndexNow.org Specification

https://indexnow.org

The engine-agnostic protocol specification, including the open-source spec and universal endpoint documentation.

Bing Webmaster Tools Blog

https://blogs.bing.com/webmaster

Official announcements and updates about IndexNow changes from the Bing team.

Key Sections of Bing's Documentation Explained

1. API Key Format Requirements

Official: "The key must be a unique key that only contains characters in [a-zA-Z0-9]."

This means only letters (uppercase and lowercase) and numbers. No hyphens, underscores, spaces, or special characters. Many developers incorrectly generate keys with hyphens these will be rejected.

2. Key File Location and Content

Official: "The key file must be named <key>.txt and must contain only the key string."

"Only the key string" means nothing else no quotation marks around it, no HTML, no description text. Just the raw key. The Content-Type should be text/plain, which is the default for .txt files on most servers.

3. The urlList Field vs. url Parameter

Official: "For single URL, use GET with ?url=... For multiple URLs, use POST with urlList array."

The documentation describes two separate methods. GET is simpler but limited to one URL per request use POST with urlList for everything except quick single-URL tests. POST with a 1-item urlList is perfectly valid for single URLs too.

4. The host Field in POST Requests

Official: "The host field should match the host of all URLs in the urlList."

The host field must exactly match the domain of every URL in your list. It should be the domain only (yourdomain.com), not the full URL (not https://yourdomain.com/). All URLs must be from the same domain cross-domain batch submissions are not supported.

5. The keyLocation Parameter

Official: "Optional. If not provided, the key file is assumed to be at https://host/key.txt"

Use keyLocation only if your key file is hosted at a non-standard path. If your file is at the domain root, omit this parameter entirely.

Common Documentation Misunderstandings

The key file must contain "only the key string" NOT "key: {your-key}" or any other format.
The host parameter is the domain only NOT a URL. Use "yourdomain.com", not "https://yourdomain.com"
You DO NOT need to register with Bing ownership is verified via the key file, no account required.
"Up to 10,000 URLs" means per individual POST request, not per day.
The 200 vs 202 response distinction has no practical significance both mean successful submission.

Full Implementation Guide API Reference