Secret Lesson 1

The SRD 5.2.1 License, CC BY 4.0, Attribution, and “5E Compatible” Content

Before learning the rules themselves, there is one important subject to understand:

Why are we allowed to use the SRD 5.2.1, and what must we do when we build our own material from it?

The answer is found on the very first page of the SRD.

The System Reference Document 5.2.1 is made available under the Creative Commons Attribution 4.0 International License, usually abbreviated as:

CC BY 4.0

The document states that its content may be used in any way permitted by that license, provided that the required attribution is included.

This is what allows creators to study the SRD, reorganize its material, explain its rules, and create compatible content while following the license conditions.

WHAT IS THE SRD 5.2.1?

The System Reference Document 5.2.1, or SRD 5.2.1, is a reference document containing a substantial collection of fifth-edition game rules.

It includes material covering areas such as:

core gameplay
abilities and D20 Tests
combat
character creation
classes
backgrounds
species
feats
equipment
spellcasting
spells
rules terminology
tools for running adventures
magic items
monsters
animals

This is the rules foundation used throughout this course.

But the SRD is more than just a collection of rules.

It also establishes the legal framework under which that material can be reused.

WHAT DOES CC BY 4.0 MEAN?

The SRD identifies its license as the:

Creative Commons Attribution 4.0 International License

The important word for us is:

Attribution

The SRD allows its material to be used under the terms of CC BY 4.0, but when that material is used in another work, the attribution required by the SRD must be included.

For a creator, this means there is a very important distinction between:

using SRD material

and

pretending that the SRD material originated entirely from you.

The license allows use of the material, but the required credit must accompany that use.

THE REQUIRED ATTRIBUTION

The SRD provides the attribution statement that should be included in works using its material.

The statement is:

This work includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.

This attribution identifies:

the source document
its version
its publisher
where the SRD can be found
the Creative Commons license under which it is provided

The SRD specifically instructs users to include this attribution when using its content under CC BY 4.0.

WHY THE VERSION NUMBER MATTERS

Notice that the attribution does not merely say:

System Reference Document

It says:

System Reference Document 5.2.1

That version number is important because it identifies the particular rules document being used.

Throughout this course, our reference is specifically:

SRD 5.2.1

When we discuss a rule, class, spell, monster, item, or other game mechanic, we are working from this version of the System Reference Document.

DO NOT ADD EXTRA WIZARDS ATTRIBUTION

The SRD contains another specific instruction.

It asks creators not to include additional attribution to Wizards of the Coast, its parent company, or its affiliates beyond the attribution statement supplied in the SRD.

This is worth remembering.

The correct approach is not to invent extra statements such as:

“Officially approved by Wizards.”

“Endorsed by Wizards.”

“Produced in partnership with Wizards.”

Those statements are not part of the attribution provided by the SRD.

Instead, use the attribution supplied by the document.

“COMPATIBLE WITH FIFTH EDITION”

The SRD also tells creators that they may include a statement indicating that their work is:

“compatible with fifth edition”

“5E compatible.”

The document expressly allows those descriptions.

This is extremely useful when describing independent material.

For example, a creator could describe a book as:

A 5E Compatible Role-Playing Guide

Compatible with Fifth Edition

These phrases communicate compatibility without claiming that the product is official.

COMPATIBILITY IS NOT THE SAME AS OFFICIAL STATUS

This distinction is important.

Saying:

“5E Compatible”

means that the material has been designed to work with fifth-edition rules.

It does not mean that the work is official, endorsed, approved, or published by Wizards of the Coast.

A compatibility statement describes how the material can be used.

It does not transform an independent work into an official product.

USING SRD MATERIAL IN YOUR OWN WORK

Suppose you want to create your own 5E-compatible material.

You might create:

an adventure
a campaign
a rule guide
a character option
a monster
a magic item
a spell
a setting
a teaching course
a reference book

If you use material from the SRD 5.2.1, you should treat that source material as licensed content and include the required attribution.

The goal is simple:

Use the rules legally and transparently.

REWRITING AND EXPLAINING THE RULES

A course such as this one does not need to function as a page-by-page reproduction of the SRD.

Instead, we can reorganize the material so that it is easier to learn.

For example, the SRD presents rules as a reference document.

A teaching course can instead explain them progressively:

introduce the basic idea
explain the rule in simpler language
show how it works
provide practical examples
connect the rule with related mechanics

The underlying rule remains grounded in the SRD.

The presentation becomes educational.

That is the approach we will use throughout this course.

WHY ATTRIBUTION MATTERS EVEN WHEN YOU REWRITE

Rewriting a rule in your own words does not change the fact that the underlying game material may come from the SRD.

For example, imagine that the SRD contains a rule explaining how a particular game mechanic works.

Instead of copying that paragraph word for word, you might explain the mechanic in your own teaching style.

That is useful.

It makes the material easier to understand.

But the course is still built using the SRD 5.2.1 as its rules foundation.

That is why proper attribution remains important.

ORIGINAL CONTENT AND SRD CONTENT

When creating a 5E-compatible work, it is useful to mentally separate two things.

SRD-BASED MATERIAL

This includes rules, mechanics, statistics, spell information, classes, monsters, equipment, and other material derived from the SRD.

YOUR ORIGINAL MATERIAL

This may include:

your own world
your own characters
your own adventures
your own stories
your own lore
your own artwork
your own explanations
your own examples
your own presentation

Both can exist together in the same product.

The attribution identifies the SRD material that forms part of that work.

A PRACTICAL EXAMPLE

Imagine you create a book called:

HEROES OF THE SHATTERED REALMS

A 5E Compatible Adventure

Inside the book, you create your own:

kingdom
villains
cities
story
quests
illustrations

But you also use SRD mechanics for:

Armor Class
Hit Points
spells
monsters
attack rolls
saving throws

Your story and setting might be original.

The game mechanics come partly from the SRD.

Therefore, the work should include the SRD attribution required by the document.

WHERE SHOULD THE ATTRIBUTION APPEAR?

The SRD tells us that the attribution statement must be included in the work when using its content.

It does not, in the short legal notice on page 1, prescribe a specific page layout for every possible type of publication.

In practice, what matters for this course is that the required attribution is clearly included in the work.

For a book, a natural place might be a legal-information or credits page.

For a digital product, it could appear in an appropriate legal or credits section.

The exact presentation can vary, but the required attribution itself should remain clear.

THE LICENSE ALSO CONTAINS LEGAL LIMITATIONS

The SRD specifically points out that Section 5 of CC BY 4.0 contains a Disclaimer of Warranties and Limitation of Liability.

In other words, the license itself includes legal provisions limiting liability.

For this course, you do not need to memorize the legal language of that section.

What matters at this stage is recognizing that:

the SRD's legal framework is the CC BY 4.0 license, and creators using SRD material should respect that license.

WHAT THIS MEANS FOR OUR COURSE

Throughout this course, we will follow several principles.

1. THE SRD 5.2.1 IS OUR RULES FOUNDATION

When we explain a rule, we will base the explanation on the relevant SRD material.

2. WE WILL TEACH, NOT SIMPLY COPY

The goal is to reorganize and explain the rules in clear educational language.

3. WE WILL PRESERVE THE MEANING OF THE RULES

Changing the wording should not accidentally change how the mechanic works.

4. WE WILL IDENTIFY THE SOURCE

The course uses material from the SRD 5.2.1 and therefore includes its attribution.

5. WE CAN DESCRIBE THE COURSE AS 5E COMPATIBLE

The SRD specifically permits the terms:

compatible with fifth edition

and

5E compatible.

COMMON MISTAKES TO AVOID

MISTAKE 1 — FORGETTING THE ATTRIBUTION

If your work uses SRD 5.2.1 material under CC BY 4.0, include the attribution supplied by the SRD.

MISTAKE 2 — CLAIMING OFFICIAL ENDORSEMENT

Being compatible with fifth edition does not mean being officially endorsed.

Use compatibility language accurately.

MISTAKE 3 — INVENTING EXTRA ATTRIBUTION

The SRD specifically asks users not to provide additional attribution to Wizards or its related companies beyond the supplied statement.

Use the provided attribution rather than creating your own version of an endorsement statement.

MISTAKE 4 — LOSING TRACK OF THE SOURCE VERSION

Our course is based specifically on:

System Reference Document 5.2.1

Keep that version number attached to the source.

LESSON 1 — KEY TAKEAWAYS

Remember these points:

The SRD 5.2.1 is available under CC BY 4.0.

Its content may be used in ways permitted by that license.

Attribution is required.

Use the attribution statement supplied in the SRD.

Do not add extra attribution to Wizards or its affiliates.

The SRD specifically asks creators not to do so.

You may describe your work as “compatible with fifth edition” or “5E compatible.”

Those terms are expressly permitted by the SRD.

Compatibility does not mean official endorsement.

Use compatibility language to describe how your product works, not to imply official status.

The SRD 5.2.1 is the rules foundation of this course.

We will reorganize and explain its material while preserving the meaning of the rules.

NEXT LESSON

LESSON 2 — FUNDAMENTAL RULES: GENERAL RULES, EXCEPTIONS, ROUNDING, AND THE RHYTHM OF PLAY

Now that we understand the source of the rules and the framework under which the SRD can be used, we can begin learning how the game itself works.

In the next lesson, we will study one of the most important principles in the entire rules system:

when a specific rule contradicts a general rule, the specific exception takes precedence.

We will also learn how rounding works and examine the complete rhythm of play in greater detail.

SRD 5.2.1 ATTRIBUTION