Postel vs Skillry

SpecialistSupplies landing page design inspiration and prompts, focusing more on visual website layouts than code-ready agent skills.

SpecialistInstalls directly as a design skill pack to enforce UI rules, whereas Skillry acts as a broader discovery library.

Free / Open-sourceBroader community catalog of open-source agent SKILL.md files, but less focused specifically on design system templates.

Free / Open-sourceOffers an open Markdown convention to guide AI coding assistants, but functions as a standard format rather than a curated library.

Schedule and automate social media on 12 platforms — with AI agents that post for you

Write, schedule, automate and analyse your X growth in one place

SpecialistA hand-picked directory of design engineering resources, tools and inspiration

Covers a wider range of Cursor plugins and MCP servers, but lacks Skillry's dedicated focus on agent skill files.

AI social scheduler that writes your posts in your voice and publishes everywhere

AI tweet writing, scheduling, and bulk X account cleanup in one toolkit

Schedule, automate and AI-generate your social media from one dashboard

Your simple AI social media assistant, built for small business owners