Sleek · Index

Sleek

An AI mobile app designer built for coding agents, with a REST API, an OpenAPI spec, an agents.md and an installable skill

Tier S · Best in classAI ToolToolAgent SkillGeneratorsleek.design

(Visit sleek.design ↗)(Docs)(Registry)

Sleek turns a text description or a hand-drawn sketch into mobile app designs. It handles multi-screen projects with one design system across them, and it exports four ways: to Figma as native editable layers with no plugin, to HTML and React with Tailwind CSS, to AI builders including a0, Anything, Cursor and Claude Code, and to a share link for stakeholders. The reason it belongs in this corpus is the word the site uses for itself: agent-native. A coding agent designs an app in Sleek on its own, through a REST API, and the whole surface is documented for that. There is a machine-readable onboarding file at /agents.md, an interactive API reference at /api/v1/docs, an OpenAPI specification at /api/v1/spec.json running to 75 KB, a setup page that creates an API key, and an official skill installed with `npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps`. The llms.txt is 27 KB and unusually candid. It states the price outright, which very few paid tools here do: Pro at 69 dollars a month, or 30 dollars a month billed yearly at 360 dollars, including 20,000 monthly AI credits. It also states that a free account gets one-time trial credits worth about one design run, and that an API run consumes the same credits as one started in the app.

Install

npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps

For an agent

Read https://sleek.design/agents.md first. It is 3.3 KB of machine-readable onboarding written for this exact case, and it is a shorter route than the 27 KB llms.txt. Install the skill rather than hand-rolling calls: `npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps`. For anything the skill does not cover, the OpenAPI spec sits at /api/v1/spec.json. Get the API key at /agents/setup. Sign-in, upgrade and key creation happen on that one page, so a person has to do it once before an agent can run. Budget the credits. A design run through the API costs the same as one in the app, a free account has about one run, and Pro gives 20,000 credits a month for 69 dollars, or 360 dollars a year. Take the Figma export when a designer continues the work. It produces native editable layers and needs no plugin, which is rarer than it sounds.

Why it is here. Most AI design tools expect a person at a keyboard. This one publishes an OpenAPI spec, an agents.md and an installable skill, so a coding agent designs the screens and then exports the code itself.

Install command, framework, licence and component list.

Facts

License: Commercial license
Pricing: Freemium, Subscription, Free but account required
Framework: React
Styling: Tailwind CSS
Distribution: Web app / online tool, Public HTTP API, CLI installer, Figma plugin
Platform: Web, iOS, Android
Content type: Screenshots / screens, Code, Figma / design source files, Design tokens / theme files
Agent readiness: Agent skill or rules pack, Public API without auth, llms.txt, Structured documentation, CLI installable, Agent access behind payment
Accessibility: Unknown
Maturity: Actively maintained
Pricing detail: Freemium, and the site states the figures rather than hiding them. A free account gets one-time trial credits worth about one design run. Pro costs 69 dollars a month, or 30 dollars a month billed yearly at 360 dollars a year, and it includes 20,000 AI credits a month. An API run costs the same credits as a run started in the app.

Helps you build

Onboarding Mobile Splash Screen Settings Mobile Public Profile Account Mobile Homepage

Notable for

agent-native, with a REST API and an OpenAPI spec
agents.md and an installable agent skill
Figma export as native layers, no plugin
exports to a0, Anything, Cursor and Claude Code
llms.txt states the price and the credit cost

Provenance

Verified 2026-08-30. HTTP 200. https://sleek.design/ 200, 364 KB; title "Sleek: AI Mobile App Designer | Design Apps in Minutes"; the navigation holds Pricing, Resources, Templates, References, "AI agents", "App Store Screenshots" and Blog, and a banner reads "Using Claude Code? Let it design your app" beside a Codex label; the hero reads "Design mobile apps in minutes — Go from idea to beautiful app designs in minutes by chatting with AI", with sample references Health Tracker (Neo-Brutalism), Crypto Wallet (Glassmorphism), Pet Manager (Playful Whimsical) and Subscription Tracker (Soft Clay 3D). https://sleek.design/llms.txt 200 at 27,466 bytes, and a control request to /zzz-not-a-page returns a different 163 KB body, so the file is real and not a catch-all. It lists "Export to Figma as native, editable layers (no plugin required)", "Export to code: HTML and React with Tailwind CSS", "Export to AI builders: a0, Anything, Cursor, Claude Code", "Agent-native: AI coding agents (Claude Code, Cursor, Codex, and others) design apps in Sleek via the REST API and agent skill", the command `npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps`, and "Free accounts can try the API with their one-time trial credits (about one design run); sustained use requires the Pro plan or higher ($69/month, or $30/month billed yearly at $360/year, including 20,000 monthly AI credits)". https://sleek.design/agents.md 200 at 3,293 bytes, /api/v1/spec.json 200 at 75,335 bytes, /agents 200 at 231 KB, /sitemap.xml 200 with 1,768 URLs.

Also in Agent Design Tooling

sleek.designTier S