Portable Agent Skills, Codex skillsets, MCP presets, and routing templates for AI coding agents.
jeremylongworth-source/AgentSkills
Skill Codex
Plan, implement, debug, and review real-time 3D game development work. Use when Codex is asked to build or improve 3D gameplay, cameras, controllers, physics interactions, animation integration, spatial UI, scene architecture, composition/component architecture, performance, rendering, Three.js, Unity, Unreal, Godot…
jeremylongworth-source/AgentSkills
Skill Codex
Design, build, repair, and review 3D models for games. Use when Codex is asked about mesh construction, topology, retopology, UV unwrapping, normals, bevels, baking, hard-surface modeling, organic modeling, sculpt-to-low-poly workflows, deformation, rig-readiness, or model cleanup.
jeremylongworth-source/AgentSkills
Skill Codex
Create, critique, and refine game characters for visual clarity, gameplay readability, story role, and production readiness. Use when Codex is asked to design playable characters, NPCs, enemies, creatures, costumes, silhouettes, shape language, factions, abilities, personality, character sheets, or 3D character…
jeremylongworth-source/AgentSkills
Skill Codex
Design, storyboard, implement, render, and review game cutscenes, intro videos, cinematics, trailers, and in-engine camera sequences. Use when Codex is asked about storyboards, animatics, shot lists, blocking, camera language, Sequencer, Unity Timeline, Cinemachine, Unreal cinematics, Blender storyboarding, intro…
jeremylongworth-source/AgentSkills
Skill Codex
Create, structure, balance, and review game content. Use when Codex is asked to design levels, missions, quests, encounters, enemies, items, rewards, progression, tutorials, puzzles, biomes, factions, economies, live-ops content, design docs, or playable content plans.
jeremylongworth-source/AgentSkills
Skill Codex
Design, implement, debug, and review multiplayer game systems. Use when Codex is asked about client/server architecture, authoritative servers, listen servers, dedicated servers, peer-to-peer, replication, prediction, interpolation, rollback, lag compensation, matchmaking, lobbies, sessions, state synchronization…
jeremylongworth-source/AgentSkills
Skill Codex
Compose, generate, direct, implement, and review game music and soundtracks. Use when Codex is asked about themes, motifs, adaptive music, interactive scores, soundtrack generation, stems, loops, transitions, vertical layering, horizontal resequencing, combat music, exploration music, boss themes, ambience beds…
jeremylongworth-source/AgentSkills
Skill Codex
Build, debug, optimize, and review 2D HTML5 games with Phaser. Use when Codex is asked about Phaser scenes, game config, preload/create/update, sprites, animations, tilemaps, cameras, Arcade Physics, Matter Physics, input, particles, UI overlays, asset loading, scaling, mobile browser support, or publishing Phaser…
jeremylongworth-source/AgentSkills
Skill Codex
Plan, run, analyze, and review game playtests, usability sessions, player feedback, telemetry, onboarding tests, difficulty tests, controls tests, fun/enjoyability research, prototype validation, and playtest reports. Use when Codex is asked to test whether a game is understandable, fun, balanced, usable, accessible…
jeremylongworth-source/AgentSkills
Skill Codex
Coordinate multiple game-development skills and produce outcome-first briefs, plans, reviews, and validation flows. Use when Codex is asked to explore the game skillset, route a broad game project across disciplines, improve skill quality, plan a full game feature, combine…
jeremylongworth-source/AgentSkills
Skill Codex
Design, implement, debug, and review player social interaction systems for games. Use when Codex is asked about chat, voice, friends, parties, lobbies, guilds, clans, presence, invites, matchmaking social flow, emotes, pings, reputation, blocking, muting, reporting, moderation, privacy, parental controls…
jeremylongworth-source/AgentSkills
Skill Codex
Design, generate, implement, debug, and review game sound effects and interactive audio. Use when Codex is asked about SFX, Foley, ambience, UI sounds, combat sounds, creature sounds, weapon audio, footsteps, spatial audio, procedural audio, audio events, middleware integration, mix behavior, sound libraries…
jeremylongworth-source/AgentSkills
Skill Codex
Design, generate, animate, export, and review game-ready 2D sprites and sprite pipelines. Use when Codex is asked about pixel art, 2D character sprites, enemy sprites, sprite sheets, animation frames, texture atlases, tile sets, autotiles, UI icons, item icons, VFX sprites, transparent backgrounds, frame grids…
jeremylongworth-source/AgentSkills
Skill Codex
Design, structure, and review interactive game narrative. Use when Codex is asked to create or improve story flow, plot beats, branching narrative, quests with story consequences, character arcs, dialogue structure, lore delivery, cutscene pacing, scene outlines, player choice, or narrative design docs.
jeremylongworth-source/AgentSkills
Skill Codex
Build, debug, optimize, and review 3D browser games with Three.js. Use when Codex is asked about Three.js scenes, cameras, render loops, WebGLRenderer, asset loading, GLTF/GLB, AnimationMixer, controls, raycasting, shaders, postprocessing, physics integrations, responsive canvas sizing, WebGL performance, mobile…
jeremylongworth-source/AgentSkills
Skill Codex
Design, implement, and review game user interfaces. Use when Codex is asked to create or improve HUDs, menus, overlays, inventory screens, ability bars, dialogue UI, controller navigation, accessibility, onboarding, game settings, UI motion, visual hierarchy, or game-specific frontend flows.
jeremylongworth-source/AgentSkills
Skill Codex
Coordinate sales and marketing strategy across positioning, ICP, funnel, pipeline, channels, lifecycle, analytics, experiments, and revenue operations. Use when Codex is asked to create a GTM plan, growth strategy, launch plan, revenue plan, marketing/sales operating system, funnel audit, or cross-functional…
jeremylongworth-source/AgentSkills
Skill Codex
Facilitate "grill me" style guided discovery interviews that ask the user focused questions, progressively elicit missing requirements, and build an aligned draft artifact such as a BRD, PRD, feature spec, implementation brief, decision memo, or project plan. Use when Codex should interview the user, clarify ambiguous…
jeremylongworth-source/AgentSkills
Skill Codex
Plan integration tests across modules, APIs, databases, queues, services, and external dependencies. Use when Codex is asked to test interactions, persistence, contracts, adapters, or dependency boundaries beyond unit tests.
jeremylongworth-source/AgentSkills
Skill Codex
Draft investor updates for founders and investor-facing operators. Use when Codex is asked to write a monthly investor update, founder update, investor memo, stakeholder update, ask/help section, traction update, or board/investor-ready company progress note.
jeremylongworth-source/AgentSkills
Skill Codex
Turn issues, bug reports, feature requests, and engineering tasks into implementation plans. Use when Codex is asked to analyze an issue, clarify scope, propose code changes, define acceptance criteria, identify affected areas, or plan tests before implementation.
jeremylongworth-source/AgentSkills
Skill Codex
Package, test, publish, price, and update browser-playable HTML5 games on itch.io. Use when Codex is asked about itch.io HTML5 uploads, ZIP requirements, index.html, iframe embeds, fullscreen mode, mobile-friendly settings, case-sensitive paths, HTTPS assets, compression, game page setup, donations, pay-what-you-want…
jeremylongworth-source/AgentSkills
Skill Codex
Turn resolved support issues into knowledge base drafts. Use when Codex is asked to create, update, or review a KB article, help-center article, support runbook, troubleshooting guide, known issue note, FAQ, or reusable resolution from a completed ticket.
jeremylongworth-source/AgentSkills
Skill Codex
Design, audit, and improve lifecycle marketing, CRM segmentation, email campaigns, nurture flows, onboarding, retention, winback, lead scoring, consent, deliverability, CAN-SPAM-aware workflows, and customer communications. Use when Codex is asked about email marketing, lifecycle stages, CRM journeys, automation, or…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: