Do I need versioned docs if my API changes often?

Usually, yes — if your API changes in ways that can break existing users.

When versioned docs are worth it

Use versioned docs if:

• You have external consumers of the API
• Changes are backward-incompatible sometimes
• Different clients may be on different release cadences
• You need to support old and new behavior at the same time

Versioned docs help users know:

• what changed,
• what still works,
• and how to migrate.

When you might not need them

You may not need fully versioned docs if:

• your API is internal only
• you make mostly backward-compatible changes
• you can keep one docs site with clear changelog / deprecation notes
• your API is very early-stage and still moving fast

Practical approach

A common compromise is:

• one main docs site
• a changelog
• explicit deprecation notices
• versioned docs only for major API versions or breaking changes

Rule of thumb

If users ever ask, “Which docs apply to my code?” then versioned docs are probably useful.

If you want, I can also suggest a lightweight docs versioning strategy for a fast-changing API.