Sleek Design Mobile Apps - Setup Guide¶

Source: skills.sh (680.6K installs, Oct 8, 2026) GitHub: sleekdotdesign/agent-skills (572⭐, MIT) Category: Design / Mobile App Development First Seen: Sep 4, 2026 (skills.sh listing under designed-by-ai/skills) Quality Tier: 🟢 Production (Gen Agent Trust Hub Pass / Socket Pass; Snyk verdict changed to Fail - see Security)

Sleek is an AI-powered mobile app design tool, and this is its official agent skill. An agent describes what should be built in plain language, and the skill drives Sleek's REST API (/api/v1/*) to create projects, run design chats, pull components, and render screenshots. The SKILL.md is a complete API reference with device-flow key onboarding, so the end user never handles a raw API key. The skills.sh listing source is designed-by-ai/skills; the GitHub repo the README ships from is sleekdotdesign/agent-skills (same content, 572⭐ canonical repo).

Installation¶

npx skills add designed-by-ai/skills --skill design-mobile-apps

The GitHub-URL form shown on the skill page is equivalent:

npx skills add https://github.com/designed-by-ai/skills --skill design-mobile-apps

Note (from the publisher README): npx skills add installs into .agents/skills/ in the working directory. If your agent does not discover skills there, point it at the installed SKILL.md explicitly. Manual install keeps the bundle intact wherever the platform expects skills.

Prerequisites¶

Requirement	Details
Sleek account	Free accounts get one-time trial credits (about one design run); sustained use needs Pro or higher ($49.99/month, or $30/month billed yearly with 20,000 monthly AI credits)
SLEEK_API_KEY	Environment variable. Created at sleek.design/agents/setup or managed at sleek.design/dashboard/api-keys
Device-flow auth	If no key is set, the skill runs the device flow: POST `/api/v1/device/start` → show the user the verification URL + user code → poll `/api/v1/device/poll` until approved. Keys expire after 15 minutes
Network scope	Single host: all requests go exclusively to `https://sleek.design`; no third-party endpoints

What It Provides¶

Capability	How It Works
Project management	Create, list, get, and delete projects (`projects:read` / `projects:write` scopes)
Design chats	Send plain-language messages that describe what to build; runs return rendered screens (`chats:read` / `chats:write`)
Component library	List components in a project (`components:read`)
Screenshot rendering	Render component screenshots to images (`screenshots` scope)
Minimal-scope keys	Create API keys with only the scopes a task needs; prefer short-lived or revocable keys
Contract self-discovery	OpenAPI spec at `https://sleek.design/api/v1/spec.json`; browsable docs at `https://sleek.design/api/v1/docs`

Quick Start¶

Install the skill (above)
Run it; it will trigger the device flow for the API key on first use (user approves at the printed URL, key lands in SLEEK_API_KEY)
Ask for a design: create a project, send a chat message describing the app or screens wanted, and pull the returned rendered screens
Iterate with follow-up chat runs; use the screenshots scope to render components for review
Export assets or implement the design in code (HTML, React Native, SwiftUI) per the SKILL.md guidance

CorpusIQ Use Cases¶

UGC visual assets - generate app-screen mockups for content and landing-page visuals without a designer in the loop
Product concept exploration - prototype mobile UI concepts for CorpusIQ feature pitches and investor decks in minutes
Client-facing demos - render example dashboards or screens for outreach and onboarding material
Content production - the HyperFrames/UGC pipeline can feed Sleek-rendered screens into video compositions
Competitive teardowns - mock up competitor flows side by side to sharpen product positioning docs

Integration with CorpusIQ¶

CorpusIQ is the connector layer that lets AI assistants read the systems a business already runs on - accounting, payments, CRM, email, files and analytics - and answer with the source named. It is read-only by design: it retrieves data and never writes to, or acts in, a connected system, which is what makes it safe to point at live accounts.

This page is part of the CorpusIQ directory, the reference we maintain for the MCP server and agent-skill ecosystem. Run alongside CorpusIQ, a third-party server like this one can be combined with a company's own business data in a single answer.

See what CorpusIQ connects

Limitations / Verification¶

Paid ceiling: free tier is one-time trial credits; sustained use requires a Pro plan. State pricing plainly before any payment step (the SKILL.md mandates this).
Single-vendor lock: the skill only talks to sleek.design. It is not a general design tool.
Listing quirk: skills.sh indexes the publisher as designed-by-ai/skills while the README's canonical repo is sleekdotdesign/agent-skills - both GitHub repos resolve (HTTP 200) and carry identical content. Install via the skills.sh source name.

Security¶

Security audits (Oct 8, 2026 re-check):

Audit	Sep 7, 2026	Oct 8, 2026
Gen Agent Trust Hub	Pass	Pass
Socket	Pass	Pass
Snyk	Pass	Fail

The Snyk verdict changed from Pass (Sep 7, 2026) to Fail (Oct 8, 2026). Before installing in sensitive environments, review the Snyk report linked on the skill page; the details page itself was returning a server error at re-check time.

HyperFrames - Video Composition Skill (visual production pipeline)
Meng To Skills - Frontend & Motion Design Suite Setup
Archify - Interactive Architecture Diagram Skill Setup

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