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Spec Layer

Spec Layer turns Figma components, variables, and styles into specifications for teams and AI coding agents.

Place
#10 of 22
Score
6.5
Spec Layer's website

What Spec Layer is

Spec Layer turns Figma components, variables, and styles into specifications for teams and AI coding agents. It places component specifications and foundation references on the Figma canvas, covering measurements, variants, anatomy, and token tables. Component details can be copied as YAML or Markdown, while variables and styles can be exported as DTCG JSON. Its CLI brings published specifications and design tokens into a repository and can produce CSS custom properties for web projects; it requires Node.js 22 or newer. Canonical JSON supports validation, inspection, and integrations. The MIT-licensed plugin has no user accounts, and deterministic measurements, states, anatomy, and tokens run locally in Figma. When AI writing is requested, derived component summaries and sometimes rendered images are sent through Spec Layer to Anthropic; foundation writing sends token names and resolved values without a component image. The free plan covers one Figma file and ten publishing updates per month. Pro costs $7.99 per month and supports up to ten files. Published libraries are limited to 5 MB, and Pro allows up to ten libraries.

Good

  • Exports component specifications as YAML or Markdown
  • Can export web CSS custom properties
  • Deterministic measurements run locally in Figma
  • MIT licensed

Watch out

  • CLI requires Node.js 22 or newer
  • Free plan allows one Figma file
  • Published libraries limited to 5 MB

Who it suits

Spec Layer suits Figma teams that need structured component and token documentation for repositories or AI coding workflows. The free plan fits a single-file workflow; teams needing multiple files can consider Pro.

Verdict

Spec Layer connects Figma documentation and design tokens with repository workflows in several export formats. Consider its file, publishing, and library limits, and note that AI writing sends specified data through the service to Anthropic.

Plans and prices

From Spec Layer's own pricing page, checked 30 Sep 2026.

All about pricing
PlanPriceWhat it gives you
FreeFree1 Figma file · 10 publishing updates/month · 20 AI writing uses first 30 days, then 10/month
Pro$7.99 a monthUp to 10 Figma files · unlimited updates under fair use · AI writing with no fixed cap for normal individual use · priority support · Billed monthly. Cancel anytime.
TeamsPriced on requestTeam licensing · agreed file and usage limits · onboarding and workflow guidance · custom integration scoping · arranged support

The facts

Each one read from Spec Layer's own pages, with the date it was checked.

What it does

AI context export
Component specifications can be copied for coding agents as YAML or Markdown, while variables and styles can be exported as DTCG JSON.checked 30 Sep 2026
AI data flow
When AI writing is requested, a derived component summary and sometimes a rendered image are sent through Spec Layer to Anthropic; foundation writing sends token names and resolved values without a component image.checked 30 Sep 2026
Canvas documentation
It creates component specifications and foundation references on the Figma canvas, including measurements, variants, anatomy, and token tables.checked 30 Sep 2026
CLI requirement
The CLI requires Node.js 22 or newer.checked 30 Sep 2026
Integrations
Canonical JSON is provided for validation, inspection, and building integrations, while Teams plans include custom integration scoping.checked 30 Sep 2026
License
Spec Layer is MIT licensed.checked 30 Sep 2026
Output formats
The product supports canvas documentation, component YAML, component Markdown, foundation DTCG JSON, web CSS tokens, and canonical JSON.checked 30 Sep 2026
Privacy
The plugin has no user accounts, and deterministic measurements, states, anatomy, and tokens run locally in Figma without sending data elsewhere.checked 30 Sep 2026
Publishing limit
A published library has a 5 MB limit, and the Pro license can publish up to 10 libraries.checked 30 Sep 2026
Purpose
Spec Layer turns Figma components, variables, and styles into precise specifications for teams and AI coding agents.checked 30 Sep 2026
Repository delivery
The CLI pulls published component specifications and design tokens into a repository and can export CSS custom properties for web projects.checked 30 Sep 2026
Security architecture
The backend runs on Cloudflare Workers, the Anthropic API key remains server-side, prompts, rendered images, and generated text are never logged, and payment cards are handled by Lemon Squeezy.checked 30 Sep 2026
Support
Spec Layer is maintained by an independent developer and support replies are expected within a few business days.checked 30 Sep 2026

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