Developer Tools & Repos Agent Skills for Gemini CLI

This skill should be used when the user asks about "tests", "unit tests", "EditMode tests", "PlayMode tests", "Test Runner", "test…

TextMeshPro (TMPro) expert for Unity text rendering with advanced typography, performance optimization, and professional text effects.

Write Unreal C++ that conforms to Epic's coding standard — type prefixes

unreal-engine. Use when developing games with unreal engine.

Unreal Engine Nanite skill for virtualized geometry, mesh streaming, and LOD-free workflows.

Use when the user wants to update, pull, or sync their WebKit repository or branch.

Survey the workspace for available Rust dependency upgrades, apply patch/minor bumps in an isolated worktree, run full `cargo xtask…

Upgrade flutter_gemma dependency — discover API changes, fix compilation, support new features, update tests, bump version

Generates Application Use Cases for PHP 8.4.

myfy UserModule for authentication with email/password, OAuth, sessions, and JWT.

Use as the FIRST action on any research, investigation, or codebase-understanding request — "research X", "investigate X", "look into X"…

Router for systems-as-experience - emergence, sandbox, optimization, discovery, narrative, modding

Use when you need to run interactive CLI tools (vim, git rebase -i, Python REPL, etc.) that require real-time input/output - provides…

Validation agent that validates plan tech choices against current best practices

MANDATORY: Run before git push --force, rebase, or reset to verify safety

Vehicle simulation skill for wheel colliders, suspension, and aerodynamics.

React and Next.js performance optimization guidelines from Vercel Engineering.

Pre-commit auto-formatters can sweep concurrent agents' unstaged work into your commit when stash/restore mishandles a mixed working tree.

Meta-skill for creating and managing Claude Code skills

Spring Boot architecture patterns, REST API design, layered services, data access, caching, async processing, and logging.

Self-contained app generator — invoke this skill directly, do not decompose into sub-steps.