Should you automate documentation?

Automating documentation sounds appealing, but it is not always the right call, and doing it badly is worse than not doing it. Here is an honest guide to when automation is worth it, what to automate, and what to keep in human hands.

When automation is worth it

Automation pays off when the same work happens over and over. For docs, that means:

• Your code changes often, so pages go stale faster than anyone can fix them by hand.
• Your API reference has to track the code exactly, which is tedious to maintain manually.
• Publishing your docs is a repetitive step that eats time on every release.

If any of these describe you, automation saves real effort and, more importantly, catches drift you would otherwise miss.

When it is not worth it

Automation is a poor fit when:

• Your docs are small and stable, so they rarely go out of date.
• Your content is mostly conceptual, explaining why rather than what, which needs a human voice.
• You have no capacity to review automated output, in which case automation just ships mistakes faster.

If your docs are a handful of stable pages, the setup cost of automation is not worth it. Write them by hand and move on.

What to automate, and what not to

The rule of thumb: automate the mechanical, keep the editorial.

Good to automate:

• Regenerating API reference from code.
• Publishing the site from git.
• Detecting broken links and failing examples.
• Finding and fixing pages that a code change made inaccurate.

Keep manual:

• Deciding what to document and how to structure it.
• Explaining concepts and trade-offs.
• The voice and judgment that make docs worth reading.

Automation handles the parts that follow rules. People handle the parts that need thought. Trying to automate the thinking is where teams get burned.

The risk to watch: confident wrongness

The biggest danger of automated docs is that a tool writes something plausible and wrong. Documentation that is confidently incorrect is worse than a page that is obviously missing, because readers trust it and act on it.

This is why the review step is not optional. Any automation that edits your docs should deliver its work somewhere you can check it before it ships. The clean way is a pull request. That is the model uptodate uses: it reads the code changes you merge to GitHub, finds the docs a change made inaccurate, and opens a pull request with the fix, so a person reviews every edit before it reaches readers. You get the upkeep without giving up control.

A middle path

You do not have to choose between fully manual and fully automated. Most teams should automate the grind and keep a human in the loop for review. Let a tool find the stale pages and draft the fixes, and let a person approve them. That combination gets you the speed of automation and the safety of judgment.

The short answer

Automate documentation if your code changes often and your docs keep going stale. Automate the mechanical parts, keep the editorial parts human, and never skip review. If your docs are small and stable, or you cannot review the output, stay manual. The best setup automates the drudgery and keeps a person on the final call.