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Harness
Put raw intelligence to work.
Skills, MCP servers, prompts, assistants and connectors. Every listing shows its author, version and the permissions it needs.
On the shelves21,000
- MCP servers18,849
- Skills1,282
- Assistants651
- Prompts218
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DesignSpecialist assistants, also called subagents. Installed in Claude Code, Codex and the like, they take on the work their main session hands them.
- UI Designermsitarzewski 158kExpert UI designer specializing in visual design systems, component libraries, and pixel-perfect interface creation. Creates beautiful, consistent, accessible user interfaces that enhance UX and reflect brand identityDesignMarketing and SEO
- USWDS Developermsitarzewski 158kExpert U.S. Web Design System frontend developer specializing in USWDS components and design tokens, accessible-by-default patterns, responsive government UI, Sass settings/theming, the federal design language, integration into CMS platforms (Drupal/WordPress), and compliance with 21st Century IDEA and the Federal Website StandardsFrontendDesignLegal
- Design system architectwshobson· ui-design 40kExpert design system architect specializing in design tokens, component libraries, theming infrastructure, and scalable design operations. Masters token architecture, multi-brand systems, and design-development collaboration.Same as sessionDesignMarketing and SEOArchitecture
- Roblox Experience Designermsitarzewski 158kRoblox platform UX and monetization specialist - Masters engagement loop design, DataStore-driven progression, Roblox monetization systems (Passes, Developer Products, UGC), and player retention for Roblox experiencesDesign
- UX Researchermsitarzewski 158kExpert user experience researcher specializing in user behavior analysis, usability testing, and data-driven design insights. Provides actionable research findings that improve product usability and user satisfactionTestingDesignResearch
- UX Architectmsitarzewski 158kTechnical architecture and UX specialist who provides developers with solid foundations, CSS systems, and clear implementation guidanceFrontendDesignArchitecture
- UX Researcheralirezarezvani 28kUX research agent for research planning, persona generation, journey mapping, and usability test analysis. Use when product decisions need user evidence — e.g., planning interview scripts and recruiting criteria for a discovery study, or synthesizing usability-test sessions into prioritized findings and updated personas.Sonnet3 skillsDesignResearch
- UI visual validatorwshobson· accessibility-compliance 40kRigorous visual validation expert specializing in UI testing, design system compliance, and accessibility verification. Masters screenshot analysis, visual regression testing, and component validation.SonnetTestingDesignLegal
- Frontend engineeralirezarezvani 28kFrontend-engineering orchestrator. Walks the 7 Matt Pocock forcing questions (device, LCP target, rendering, bundle budget, SEO vs auth, design system, WCAG), picks the framework/rendering profile, forks into specialists (a11y-audit, apple-hig-expert, epic-design, performance-profiler, playwright-pro — listed alphabetically; workflow order is dependency-driven) rather than reimplementing their scope. Forks own context. Invoke via /cs:frontend-review or Agent({subagent_type:"cs-frontend-engineer",...}).1 skillBrowser automationFrontendDesign
- UI/UX designerwshobson· multi-platform-apps 40kCreate interface designs, wireframes, and design systems. Masters user research, accessibility standards, and modern design tools. Specializes in design tokens, component libraries, and inclusive design.SonnetDesignResearch
- Product Orchestratoralirezarezvani· product-team 28kOutcome-first product lead. Routes product inquiries (prioritization, OKRs, UX research, design systems, competitive, analytics, experiments, discovery, roadmaps, scaffolding, stories, HIG, code-to-PRD, summarization) to the right sub-skill via the product-skills orchestrator, and drives the continuous-discovery loop with machine gates (cadence tracker + OST linter). Forks context to keep heavy intake (interview logs, event exports, competitor data) out of the parent thread. Signature forcing question — "What outcome does this serve, and which tested assumption says it will?"SonnetDesignData analysisResearch