davidbirchall

Working practices for an AI agent serving one person: task decomposition, verifying before declaring done, asking versus assuming, minimal-change discipline, session handoff notes, delegation briefs, and skill authoring.

AI engineering skills for LLM-powered applications and agent systems: LLM integration, prompt engineering, agent design and orchestration, tool and MCP integration, context engineering, retrieval-augmented generation, evaluation, testing, security, and observability.

Backend skills for Node.js / NestJS / Fastify / Prisma / TypeScript: Node and NestJS conventions, architecture, API design, validation, database design and data access, caching, authentication and authorization, security, testing, background processing, error handling, observability, plus Fastify, RxJS, OpenAPI/Swagger, and Postman.

Solo-business skills for individual makers of software and games: licensing and IP, privacy and data retention, pricing and monetisation, payments and billing, and product analytics. Provider-neutral and not legal advice.

Creative-process skills for games, film, animation, books, and brands: creative direction, art direction, visual development, worldbuilding, narrative, and character design.

Creative technology and asset pipeline skills for Unity: Blender workflows, 3D and 2D asset pipelines, asset optimisation, material and shader workflows, VFX implementation, animation integration, and audio integration. Covers technically preparing and integrating assets, not creating them.

Data engineering skills distinct from general backend work: SQL conventions, data modelling, database migrations, query optimisation, data integrity, search indexing, and data import and export.

Frontend skills for Vue 3 / Nuxt 3 / TypeScript: architecture, state management, atomic design, design systems, CSS, accessibility, testing, Storybook, tooling (ESLint/Prettier/TypeScript), Turborepo, TanStack Query, forms, performance, security, build tooling, internationalization, API client patterns, component library publishing, and animation and motion.

Engine-agnostic game design skills: game idea, game design, mechanic design, systems design, progression design, level design, and balance, with playtesting guidance.

Game development engineering skills for Unity and C#: C# conventions, project patterns, architecture, editor workflows, asset management, gameplay and state systems, input, character controllers, cameras, UI, save/load, game AI, physics, procedural generation, performance, profiling, and build and release.

Domain-agnostic knowledge-work skills: research practice, knowledge capture, decision-making, documentation, and review. A chained workflow from question to evidence, notes, decisions, written artifacts, and feedback.

Provider-neutral DevOps and platform engineering skills: git workflows, monorepo management, build systems, CI/CD, environment configuration, secrets management, containerization, deployment patterns, infrastructure as code, monitoring and observability, and release management.

Product process skills: idea shaping, discovery, user research, UX design, product definition (PRD), and feature design.

Production-process skills for software, games, and creative projects: planning, scope, prioritisation, estimation, milestones, release, and retrospective.

Shared engineering capabilities that apply across frontend, backend, AI and game development: software architecture, technical design, TypeScript conventions, testing strategy, application security, performance engineering, code review, debugging, dependency management, and technical documentation.

End-to-end recipe skills that sequence the other plugins for common jobs: ship a web feature, add a chat capability, build a game feature, and cut a game build.