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ZAR now keeps docs in sync across repos and languages

documentation that understands your codebase

Point ZAR at a repo. It reads the code, writes the docs, and keeps them in sync. Zero manual upkeep.

get started freeread the docs
Install ZAR
# 1. install the GitHub Appopen github.com/apps/zar-app # 2. choose the repos ZAR should watchSettings -> Install -> Select repositories # 3. open your next pull requestZAR reviews the diff and proposes doc updates

Add the GitHub App, pick repositories, done.

works with
GitHubNext.jsNextraVercelMDXMarkdown

When the code moves, the docs follow

ZAR reads each pull request and proposes the smallest doc change that makes the page true again. Stale lines go red, synced lines go green.

README.md
## Running locally Start the API, then open the dashboard:     uvicorn app.main:app --port 8080    uvicorn app.main:app --port 8000 The webhook is served at `POST /webhook`.The webhook is served at `POST /github/webhook`.
Free, no signup

Codebase Health Teardown

Run ZAR on any public repo and get a shareable report: architecture map, onboarding friction, and docs that drifted from the code.

Run a free teardown
Features

Everything to keep your docs alive

Codebase understanding

Tree-sitter AST parsing reads structure, signatures, and symbols, not just text diffs.

def process_event(repo, diff):    tree = parse(repo)        # tree-sitter AST    return changed_symbols(tree, diff)

Auto-documentation

Docs written from your actual code. Minimal diffs, and never invented facts.

Always in sync

Every pull request triggers a check, so docs update with the code across repos.

Multilingual

Keep .mdx and Nextra docs consistent across languages, such as English and Kazakh.

GitHub-native

Runs as a GitHub App. Comments, checks, and labels inside your review flow.

Built for docs that keep moving

Build-in-public, soon

Real quotes are on the way. These slots are placeholders, not invented reviews.

Placeholder

Reserved for a real build-in-public note about docs staying current through a busy release.

Open-source maintainer

Placeholder

Reserved for a real quote about onboarding new engineers without a stale wiki slowing them down.

Platform engineer

Placeholder

Reserved for a real quote about shipping bilingual docs without a second writing pass.

Developer advocate

Placeholder

Reserved for a real quote about catching a drifted README inside the pull request, not after.

Engineering lead

Pricing

Start free. Upgrade when docs matter.

Prices are early and may change before launch.

Free

Public repos and a free teardown.

$0
Install GitHub App
  • Public repositories
  • Limited monthly syncs
  • PR comments with doc diffs
  • Free Codebase Health Teardown
Popular

Pro

Private repos for solo developers.

$19/mo
Upgrade to Pro
  • Everything in Free
  • Private repositories
  • Unlimited syncs
  • CI gate (zar/docs check)
  • Custom style guide

Team

Seats and cross-repo sync.

$49/mo
Upgrade to Team
  • Everything in Pro
  • Multiple seats
  • Cross-repo sync
  • Multilingual docs
  • Priority support

Enterprise

Self-host with an SLA.

Custom
Contact sales
  • Self-hosted deployment
  • SSO and audit logs
  • SLA and dedicated support
  • Security review

Frequently asked questions

Try ZAR free

Install the GitHub App, open a pull request, and watch your docs keep up with the code.

Install GitHub Appread the docs