docs-keeper vs Mintlify: hosting vs. auto-updating
Mintlify and docs-keeper get lumped together as 'AI docs tools,' but they solve different halves of the problem. An honest comparison of where each fits — and why you might use both.
If you search "AI documentation tool," Mintlify and docs-keeper both show up, and it's easy to assume they compete head-to-head. They don't, really. They solve different halves of the same problem — and once you see the split, picking between them (or using both) gets simple.
Quick disclosure: I build docs-keeper, so weigh this accordingly. I've tried to keep it fair, because pretending Mintlify isn't excellent at what it does would just make me look uninformed.
The one-sentence difference
Mintlify is where your docs live and look good. docs-keeper is what keeps their content current as your code changes.
Mintlify answers "how do I host beautiful, searchable docs?" docs-keeper answers "who writes the update when the code changes?" Those are different questions, and most teams eventually need answers to both.
What Mintlify is genuinely great at
- Beautiful, fast docs sites out of the box — components, search, dark mode, the works.
- Authoring experience — MDX, a polished editor, previews.
- AI assistance while you write — drafting, rephrasing, an AI chat over your docs for readers.
- Hosting + analytics — it's a complete documentation platform.
If your problem is "our docs site is ugly / hard to maintain / has no search," Mintlify is a strong answer. It is, in the truest sense, a docs host and authoring tool.
The gap it leaves
Here's the thing every hosting/authoring tool shares, Mintlify included: a human still has to notice the code changed and go write the update. The AI helps you write once you've decided to write. It isn't wired to your merge events. So the failure mode is unchanged — you ship a PR, the docs site is now slightly wrong, and it stays wrong until someone remembers to open the editor.
That's not a Mintlify flaw. Hosting and updating are just different jobs. It's only a problem if you assumed buying a docs platform would keep the content current. It won't, by itself.
What docs-keeper does instead
docs-keeper isn't a place your docs live. It's a GitHub App that watches your merges. When you merge a PR, it:
- reads the diff,
- drafts the doc / CHANGELOG update grounded in that diff (it can't reference code that isn't in the change — that's a hard gate, so it doesn't hallucinate APIs),
- runs it through seven validation gates,
- and opens a docs PR you review.
It never hosts your docs and never auto-merges your code. It produces the update; where that update lives is up to you.
The honest recommendation: they're complementary
The cleanest setup for a lot of teams is both:
- Mintlify (or ReadMe, or your Docusaurus site) hosts the docs and makes them lovely to read.
- docs-keeper keeps the underlying content current by opening update PRs as the code changes.
docs-keeper feeds the source files; your host renders them. You're not choosing between a nicer site and current content — you can have both.
When to pick which
| Your problem | Reach for |
|---|---|
| "Our docs site is ugly / has no search / is painful to author" | Mintlify (hosting + authoring) |
| "Our docs are always behind the code and nobody updates them" | docs-keeper (auto-update PRs) |
| Both of the above | Both — they don't overlap |
| "We just want a current CHANGELOG with zero effort" | docs-keeper |
Pricing note
Mintlify and docs-keeper price differently because they're different products — one's a hosting platform, one's a per-merge automation. docs-keeper is free for public repos and roughly $0.004 in LLM cost per doc PR; paid tiers cover private repos and teams. (We keep the full comparison page here up to date.)
If your docs site is fine but your docs content keeps drifting, docs-keeper is the missing half.
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