Free for life for the first 100 installs

One price per design system. No seats.

The open source CLI, MCP server and GitHub Action are free forever. The GitHub App is free for life for the first 100 installs. After that, Team is $49 a month per design system, with unlimited repos, contributors and agents.

Open source

For anyone, in any repo

$0 forever

The same deterministic engine the GitHub App runs, on your machine and in your CI. MIT licensed.

  • CLI: drift check, health score, token-exact fixes
  • MCP server that gives coding agents your tokens
  • GitHub Action with fail-on-drift to block merges in your CI
  • Unlimited repos, contributors, agents and runs
  • Sends nothing to Buoy (telemetry is opt-in, counts only)
View on GitHub
First 100 installs

GitHub App

For the first 100 installs

$0 for life

Hosted pull request reviews with no workflow files. Install while spots remain and your organization keeps it free for life.

  • Reviews only the lines a pull request adds
  • Committable fixes that use your existing tokens
  • Remembers suggestions your team declines
  • @ahoybuoy answers questions on the pull request
  • Dashboard and scan history
  • Unlimited repos, contributors and agents

After the first 100 installs: Team, $49/month per design system. Public repos stay free.

Install from GitHub

Organization

For the team that owns a design system used across many teams

$5,000 per year, per design system

Everything in Team for one design system, plus the record of how it holds up across your organization.

  • Everything in Team
  • Org-wide drift record across every repo that uses your system
  • Optional calibration ($12,000, one time): your product rules, codified for agents, with agreed fixes shipped as pull requests
  • Design-partner relationship with the people building Buoy
Talk to Dylan What the plan includes →

After the first 100 installs

Team

$49 per month, per design system

The GitHub App for new installs once the 100 free-for-life spots are gone. Installs that got a spot keep it free for life.

  • ✓ Unlimited repos, contributors, agents and runs
  • ✓ No seats: agents write the code, and every pull request gets the same check
  • ✓ Public repos are always free
  • ✓ Everything in the GitHub App column above

Feature comparison

Feature
Open source
GitHub App / Team
Organization
Deterministic drift engine (same rules everywhere)
✓
✓
✓
Block merges in your own CI (fail-on-drift)
✓
✓
✓
MCP server for coding agents
✓
✓
✓
Unlimited repos, contributors and agents
✓
✓
✓
Hosted pull request reviews, no workflow files
—
✓
✓
Committable inline fixes on the pull request
—
✓
✓
Remembers declined suggestions
—
✓
✓
Dashboard and scan history
—
✓
✓
Org-wide drift record
—
—
✓
Calibration available ($12,000, one time)
—
—
✓
Design-partner relationship
—
—
✓

Frequently asked questions

What does "free for life" mean?
If your GitHub organization or account installs the Buoy GitHub App while it is one of the first 100 installs, that organization keeps the GitHub App free for life: every repo, contributor and agent, including what we add to Team later. It belongs to the organization that installed, not to a person, and it does not transfer to another organization. It lasts for as long as Buoy runs the GitHub App. The Organization plan is separate.
What happens after the first 100 installs?
New installs use Team: $49 a month per design system, with unlimited repos, contributors, agents and runs. Public repositories stay free on every install. The open source CLI, MCP server and GitHub Action stay free for everyone.
Why no per-seat pricing?
Agents write more and more of the code, and agents do not have seats. Per-person pricing would mean counting bots, or capping runs and skipping checks just when agent volume spikes. A deterministic check costs us almost nothing to run, so Team is one flat price per design system and every pull request gets the same check.
What counts as one design system?
One set of tokens and components that your repos share. Five apps built on the same tokens are one design system. A separate token set, such as a second brand, is a second design system.
Can I block merges without paying?
Yes. Add the open source GitHub Action with fail-on-drift (or run buoy check --fail-on) in your own CI and make it a required check. The GitHub App adds hosted reviews, committable fixes, remembered declines and history without any workflow files.
What data leaves my repo?
The CLI, MCP server and Action run on your machine or in your CI and send nothing to Buoy. The GitHub App reads pull request diffs and files through GitHub and scans them on Cloudflare. Some review prose, such as builder-mode coaching and @ahoybuoy answers, is written by an LLM through OpenRouter, which receives diff excerpts and file history. Findings are always deterministic; models never decide them. See exactly what is sent where.
What does the Organization plan include?
Everything in Team for one design system, plus an org-wide drift record across every repo that uses it, plus optional calibration (we capture your product rules, codify them for your coding agents, ship agreed fixes as reviewable pull requests and set up guardrails), and a design-partner relationship with the people building Buoy, for $5,000 a year per design system. Calibration is a separate one-time engagement for $12,000.