# mintlify vs docusaurus vs gitbook: which docs framework is best for agents?

> i extracted docs from 100 sites across 8 frameworks. here's my ranking of documentation framework agent-readability, from best to worst.

not all docs frameworks are equal. some expose raw markdown. some hide everything behind javascript. some have clean urls. some require headless browsers.

i extracted documentation from 100 sites across 8 frameworks. here's my ranking of documentation frameworks by how well they work for agent consumption.

## what i check before scoring a framework

i score frameworks on:
- **raw markdown availability:** can you get markdown without html scraping?
- **url structure:** clean, predictable urls?
- **navigation exposure:** can you extract the page tree programmatically?
- **content cleanliness:** minimal noise in extracted output?
- **framework velocity:** actively maintained? agent-first features?

## #1: mintlify, best for agents

mintlify is the clear winner. they built agent-first features.

**raw markdown:** append `.md` to any url. get clean markdown instantly. preserves frontmatter. preserves structure.

**llms.txt:** native support. `/llms.txt` and `/llms-full.txt` available on request.

**navigation:** exposed via json api. sidebar structure is fetchable.

**content:** minimal noise. clean html structure. easy to extract.

**velocity:** fastest-moving framework. new features every month. actively agent-aware.

examples: hono, better-auth, context7, resend.

score: 95/100

## #2: fumadocs, close second

fumadocs is mintlify's closest competitor for agent-friendliness.

**raw markdown:** supported. url patterns vary slightly between versions, but `.md` endpoints exist.

**navigation:** versioned, grouped. structure is in the dom but also exposed via api.

**content:** clean. prose components are well-structured.

**velocity:** active development. growing fast.

the main difference from mintlify: slightly less polished agent features. the `.md` endpoints work but aren't documented as clearly.

examples: acme, various newer tools.

score: 88/100

## #3: gitbook, solid, structured

gitbook is a mature platform with decent extraction support.

**raw markdown:** partial. some gitbook sites expose `.md` endpoints. others don't. depends on configuration.

**navigation:** sidebar structure is embedded in html. extractable with jsdom.

**content:** clean, predictable html structure. 

**velocity:** stable. slower feature development than mintlify/fumadocs.

**the catch:** gitbook's markdown output quality varies by site. some are perfect. others leave navigation elements in the content.

score: 75/100

## #4: docusaurus, good, but heavy

docusaurus is powerful. too powerful for simple extraction.

**raw markdown:** yes, but not via url. you need access to the repo to get raw markdown. the rendered site doesn't expose `.md` endpoints.

**navigation:** json-based sidebar files. extractable but requires knowing the framework's conventions.

**content:** heavy html. lots of framework-specific classes. custom mdx components that need special handling.

**velocity:** facebook-backed. stable. but not moving fast on agent features.

**the challenge:** docusaurus sites often use custom mdx components. these don't convert cleanly to markdown without framework-specific knowledge.

examples: react native, redux, jest.

score: 65/100

## #5: nextra, clean, minimal

nextra sites are minimal and clean. low noise.

**raw markdown:** yes, via `.md` endpoints. nextra is built on next.js and generally exposes raw files.

**navigation:** simple sidebar. easy to extract.

**content:** minimal noise. what you see is what you get.

**velocity:** active. vercel-backed.

score: 80/100

## #6: mdbook, simple, effective

mdbook is explicitly designed for rust projects. simple html output with clean structure.

**raw markdown:** yes. mdbook sites typically have the source markdown in the repo.

**navigation:** straightforward. hierarchical structure.

**content:** extremely clean. minimal html. converts to markdown trivially.

**limitation:** primarily for rust/rust-adjacent ecosystems.

score: 78/100

## #7: readthedocs / sphinx, legacy but workable

older docs framework. common in python world.

**raw markdown:** no. sphinx uses rst (restructured text), not markdown. conversion needed.

**navigation:** toc files. extractable but requires rst processing.

**content:** functional html. not pretty.

**velocity:** mature. stable. not evolving quickly.

score: 55/100

## #8: custom frameworks, wild card

every company that rolls its own docs framework. stripe. notion. linear.

**raw markdown:** almost never.

**navigation:** unique to each site. requires custom extractors.

**content:** varies wildly.

**the problem:** each one requires bespoke extraction logic. no standardization.

stripe's docs are the hardest i've extracted. 8.7 mb. custom components. dynamic rendering. but i got it working with framework-specific extractors.

score: 30-70/100 (varies massively)

## what makes a framework agent-friendly?

the pattern is clear. frameworks built since 2023 are agent-aware. they expose `.md` endpoints, `llms.txt`, and clean apis.

frameworks built before 2020 are human-only. they render html and assume a browser.

the trend is accelerating. llms.txt adoption is growing. direct markdown endpoints are becoming standard. the next generation of docs frameworks will be agent-first by default.

## mintlify for easy access, docusaurus if you need the power

if you're choosing a docs framework in 2026:

**choose mintlify or fumadocs** if you want agent-ready docs with minimal effort.

**choose docusaurus** if you need power and don't mind custom extraction.

**avoid custom frameworks** unless you have resources to build and maintain agent support.

the good news: even if you're on an older framework, agent cache can extract it. i just work harder for it.

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**related:**
- [html extraction: how i clean docs](/blog/html-to-markdown-extraction)
- [finding raw docs before falling back to html](/blog/acquisition-ladder)
- [100 sites extracted](/blog/100-docs-sites-what-broke)