Chromatic vs Handoff

Chromatic is a cloud service that scans user-interface states across browsers to find visual and functional bugs and support reviewer sign-off. It provides visual, interaction, and accessibility tests, integrating with Storybook, Vitest, Playwright, and Cypress. Browser testing covers Chrome, Firefox, Safari, and Edge. TurboSnap identifies changed tests and can reduce test-run usage costs by up to 80%. Chromatic connects with CI and Git tools, synchronizes status back to CI, and adds a pull-request badge; build notifications can go to a designated Slack channel through a webhook. The service reports SOC 2 Type 2 compliance, annual third-party penetration testing, and 99.9% uptime. It says connections are encrypted in transit, databases use 256-bit AES encryption at rest, and source code is not stored or accessed. All plans retain builds and snapshots for at least 12 months. The Free plan pauses review and testing after 5,000 billed snapshots in a month. Starter costs $179 a month; Pro costs $399 a month.

Handoff is an open-source tool for design system documentation and automation for teams and AI agents. A browser UI, REST API, and MCP server all read from the same underlying data. Figma is the only source currently wired up: a workspace can pull design tokens from Figma and push tokens, components, documentation, and assets to a registry. Handoff can create documentation pages for React and other component libraries, including live previews, properties, and tokens. Its token pipeline converts Figma tokens into CSS, SCSS, Tailwind, and DTCG outputs. Compatible agents such as Claude, Cursor, and Windsurf can access design system data through the MCP server; agents can also create component pages and usage guidelines for team approval. A promptable design space supports exploration with approved components, tokens, and brand patterns. Workspaces can use local filesystem-backed mode or a Postgres-backed registry, deployable with Docker or Vercel. The docs describe 56 MCP tools across 12 categories and an OpenAPI 3.1 specification for each registry’s REST API. Each registry currently serves one workspace, and the handoff-app package requires Node 20.9 or later. Other data sources and destinations are future direction, not shipped connectors.