Alternatives to Startup Skill

diagram-design helps Claude Code produce structured diagrams for validating product concepts, mapping user flows, and prototyping system architecture before implementation begins.

PixelRAG plugins is a one-plugin Claude marketplace from StarTrail-org built around pixelbrowse, which captures arbitrary URLs with pixelshot so Claude can reason over what users actually see—not just HTML text dumps.

This marketplace distributes the spec-workflow-mcp plugins (a base variant and a with-dashboard variant) for structured, spec-driven development in Claude Code.

official JetBrains project http jb gg badges official svg https confluence jetbrains com display ALL JetBrains on GitHub Modern Go Guidelines This repository contains guidelines https github com JetBrains go-modern-guidelines blob main claude modern-go-guidelines skills use-modern-go SKILL md for code agents that help them write modern Go code For example an agent with these guidelines uses max a b instead of an if-else block slices Contains instead of a manual loop cmp Or a b c instead of a chain of nil checks It also knows about recent additions like new 42 to get a pointer to a value and errors AsType T err for type-safe error matching both from Go 1 26 The guidelines cover the most useful features from Go 1 0 through Go 1 26 including everything targeted by the modernize analyzer An agent will Detect the project's Go version from go mod Use language features and stdlib additions available up to and including that version Prefer modern idioms over older patterns Motivation All coding agents tend

Lawvable is a large Claude Code plugin marketplace from Lawvable (Antoine Louis) that bundles forty-two legal skills contributed by practitioners such as Jamie Tso and Patrick Munro.

playhtml from spencerc99/playhtml offers one Claude Code plugin for interactive HTML prototyping, letting teams validate layout, copy, and basic UX in the browser before investing in full frontend architecture.

BMAD Method Harness is a community marketplace hosting the BMAD Planning & Orchestrator, a Claude Code harness focused on planning, roadmapping, and conflict-free parallel orchestration.