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Particles UI
What it is
Particles UI is a cloud service for teams managing design tokens across codebases, themes, and AI agents. Teams can create, version, review, and publish tokens; changes are developed on branches and pass review before joining the main token set. Its accessibility rule prevents merging or publishing when contrast falls below WCAG AA, and the check can also run in CI. The CLI accepts DTCG, Tokens Studio, CSS, SCSS, TypeScript, and JavaScript token files, and can export formats including Tailwind v4, CSS, SCSS, Style Dictionary, JSON, TypeScript, JavaScript, and Flutter. Listed integrations include Figma, Tailwind, GitHub, MCP, and TypeScript. The maker says the MIT-licensed CLI supports local token management and export without an account. The free plan includes one project, one main branch, three free viewers, unlimited tokens and export formats, releases, version pinning, and limited Figma functions. Pro costs $19/month for one seat; Team is $29/editor/month, and Business is $79/editor/month. MCP access requires Team or above. Figma requires desktop version 116 or later or a Chromium-based browser; Safari is not supported.
For and against
For
- Token changes pass through review before joining the main set.
- Contrast below WCAG AA blocks merge or publication.
- CLI supports multiple token input and export formats.
- Local CLI token management and export work without an account.
- Free plan includes unlimited tokens and export formats.
Against
- Free plan includes only one project and main branch.
- MCP access requires Team or above.
- Figma plugin does not support Safari.
- Pro costs $19/month for one seat.
The verdict
Particles UI pairs token workflows with exports and an accessibility release gate. Teams should account for plan limits and the Figma browser requirement before adopting it.
Who it suits
Particles UI is for teams that need review and versioning workflows around design tokens. It may also suit developers who want local token management and export through its CLI.
Plans and prices
Free
1 project · main branch · 3 free viewers · unlimited tokens
Read 30 Sep 2026 · particles-ui.com
Pro
5 projects · 5 branches · unlimited themes and Figma variable modes · token graph / DAG explorer
Read 30 Sep 2026 · particles-ui.com
Team
Token requests, review and 3-way merge · WCAG release gate · webhooks to release-to-PR · MCP and agent recipes
Read 30 Sep 2026 · particles-ui.com
Business
Multi-level Foundation → Brand → Product · pinned module releases and conflict review · knowledge graph explorer · 4-hour SLA and onboarding
Read 30 Sep 2026 · particles-ui.com
On the record
- Access control
- Studio supports GitHub and Google OAuth 2.0 and email magic links, while organization roles and project-level authorization control API access.particles-ui.com · read 30 Sep 2026
- Accessibility
- The product says contrast below WCAG AA cannot merge or publish, and the same check can run in CI.particles-ui.com · read 30 Sep 2026
- AI agents
- The MCP server exposes 42 tools for token access, search, impact analysis, WCAG contrast, documentation, releases and governance; MCP access requires Team or above.particles-ui.com · read 30 Sep 2026
- Compliance
- The maker says it is not currently certified under SOC 2, PCI DSS, HITRUST, ISO 27001 or SSAE 18.particles-ui.com · read 30 Sep 2026
- Figma plan limits
- Free plan users can pull but not push tokens, and creating, editing or deleting tokens in the plugin requires Pro or above.particles-ui.com · read 30 Sep 2026
- Figma requirement
- The Figma plugin requires Figma desktop version 116 or later or Figma in a Chromium-based browser; Safari is not supported.particles-ui.com · read 30 Sep 2026
- Imports and exports
- The CLI accepts DTCG, Tokens Studio, CSS, SCSS, TypeScript and JavaScript token files and exports formats including Tailwind v4, CSS, SCSS, Style Dictionary, DTCG, JSON, TypeScript, JavaScript and Flutter.particles-ui.com · read 30 Sep 2026
- Integrations
- The maker lists Figma, Tailwind, GitHub, MCP and TypeScript among the stack integrations.particles-ui.com · read 30 Sep 2026
- Open source
- The maker says its CLI is MIT-licensed and local token management and export work without an account.particles-ui.com · read 30 Sep 2026
- Payments and webhooks
- Project webhooks use HMAC-SHA256 signatures, and Stripe handles card data that Particles UI says it does not store as raw card numbers.particles-ui.com · read 30 Sep 2026
- Token governance
- Changes are made on branches and reach the main token set through a review process.particles-ui.com · read 30 Sep 2026
- Transport and storage
- Client traffic to the API uses HTTPS/TLS, and application data is stored in managed PostgreSQL databases.particles-ui.com · read 30 Sep 2026
- What it does
- Particles UI provides design decision infrastructure for teams to create, version, review and publish design tokens across codebases, themes and AI agents.particles-ui.com · read 30 Sep 2026
