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Sources and method

Only official documentation

Enforced in code.

  • AWS: docs.aws.amazon.com and selected aws.amazon.com pages. Never pricing pages.
  • Microsoft: learn.microsoft.com, in English.
  • Coding: docs.python.org, the Python wiki’s TimeComplexity page and developer.mozilla.org.

Never blogs, forums, courses, dump sites or AI output.

How each item is checked

One failure blocks the item.

  1. The source is saved

    Quotes are checked against a fingerprinted copy.

  2. Drafted from quotes only

    Every fact carries an exact quote.

  3. Code checks it

    Quotes and numbers must match the source.

  4. Two AI reviewers check it

    Claude Opus 5.5 and Claude Fable 5.1 check every claim and answer blind. Both must pass.

  5. The live page is reread

    Any difference is flagged.

  6. A person approves it

    Any later change needs a new approval.

After publishing

If a quoted line changes, or a “Something off?” report confirms an error, the item is pulled until it is fixed and approved again.

Credits and licenses

Quotes stay word for word and are always credited.

AWS documentation

docs.aws.amazon.com

Credit line: Amazon Web Services documentation. © Amazon Web Services, Inc. or its affiliates. Licensed under CC BY-SA 4.0 (opens in a new tab). Excerpt, unmodified.

Where the license is stated (opens in a new tab)

AWS product, FAQ and certification pages

aws.amazon.com

Credit line: © Amazon Web Services, Inc. or its affiliates. A short quotation for educational use under the AWS Site Terms (opens in a new tab). Excerpt, unmodified.

Where the license is stated (opens in a new tab)

Microsoft Learn

learn.microsoft.com

Credit line: Microsoft Learn documentation. © Microsoft Corporation. Licensed under CC BY 4.0 (opens in a new tab). Excerpt, unmodified.

Where the license is stated (opens in a new tab)

Python documentation

docs.python.org

Credit line: Python documentation. © Python Software Foundation. Licensed under the PSF License Version 2 (opens in a new tab). Excerpt, unmodified.

Where the license is stated (opens in a new tab)

MDN Web Docs

developer.mozilla.org

Credit line: MDN Web Docs. © Mozilla Contributors. Licensed under CC BY-SA 2.5 (opens in a new tab). Excerpt, unmodified.

Where the license is stated (opens in a new tab)

Other pages, such as the Python wiki, are quoted briefly with a link.

Vendor names are trademarks of their owners. We never use their logos.

ChecksumBot

ChecksumBot fetches the pages we cite as ChecksumBot/1.0 (+https://checksum.guide/sources). It follows robots.txt and makes at most one request per second per site. Questions: [email protected].