ceh-lessons-learned

CEH Agent Skills Plugins

A collection of Claude Code plugins providing engineering standards for AI coding agents. Skills cover the full development lifecycle, split into focused plugins — one per domain.

Skills come in two types:

• Bundle skills — load a full domain at the start of a session (explicit invocation)
• Micro-skills — narrow skills that auto-trigger based on what you are working on

---

Plugins

Plugin	Install as	Contents
Agent Coding Contract	ceh-agent-coding-contract	Behavioral contract for coding agents
Architecture Design	ceh-architecture-design	API design, domain modeling, event sourcing, LLM integration, PostgreSQL, REST API
Python Backend	ceh-python-backend	FastAPI, asyncpg, uv, testing, observability, security
TypeScript Frontend	ceh-typescript-frontend	SvelteKit, Bun, Vitest, Playwright, accessibility
Git Workflow	ceh-git-workflow	Commits, branching, PRs, merging, releases, code review, dependency management
Release Ops	ceh-release-ops	Deployments, migrations, incident response, observability, security, definition of done
Summarize Chat	ceh-summarize-chat	Structured session summary for LLM handoff
Lessons Learned	ceh-lessons-learned	Session retrospectives into LESSONS_LEARNED.md

---

Bundle Skills

Load these explicitly at the start of a session or when you need the full domain context.

Skill	Plugin	Invoke as	When to load
Agent Coding Contract	ceh-agent-coding-contract	/ceh-agent-coding-contract:agent-coding-contract	Start of any coding session — defines interactive vs autonomous modes and the five-step task workflow
Architecture Design	ceh-architecture-design	/ceh-architecture-design:architecture-design	Session covering API design, domain modeling, database schemas, or LLM integrations
Python Backend	ceh-python-backend	/ceh-python-backend:python-backend	Session writing or reviewing FastAPI + asyncpg + uv Python code
TypeScript Frontend	ceh-typescript-frontend	/ceh-typescript-frontend:typescript-frontend	Session writing or reviewing SvelteKit + Bun + Vitest TypeScript code
Git Workflow	ceh-git-workflow	/ceh-git-workflow:git-workflow	Session involving commits, PRs, branching, or dependency management
Release Ops	ceh-release-ops	/ceh-release-ops:release-ops	Session covering deployments, migrations, incident response, or observability
Summarize Chat	ceh-summarize-chat	/ceh-summarize-chat:summarize-chat	Summarizing the current session for handoff to a future LLM session
Lessons Learned	ceh-lessons-learned	/ceh-lessons-learned:lessons-learned	Extracting lessons learned from the current session into LESSONS_LEARNED.md

---

Micro-Skills

Narrow skills designed to auto-trigger based on what you are actively working on. Each points to the relevant reference content in its parent bundle — no duplication.

Architecture (ceh-architecture-design)

Skill	Invoke as	Auto-triggers when
ADR	/ceh-architecture-design:adr	Making a significant architectural decision
Domain Modeling	/ceh-architecture-design:domain-modeling	Designing entities, IDs, or status fields
Event Sourcing	/ceh-architecture-design:event-sourcing	Working with the event log or state snapshots
REST API	/ceh-architecture-design:rest-api	Building endpoints, choosing HTTP codes, shaping error responses
PostgreSQL	/ceh-architecture-design:postgresql	Writing SQL, designing schemas, or using asyncpg
LLM Integration	/ceh-architecture-design:llm-integration	Integrating LLM calls or handling LLM output

Python Backend (ceh-python-backend)

Skill	Invoke as	Auto-triggers when
FastAPI	/ceh-python-backend:fastapi	Writing route handlers, DI, middleware, or exception hierarchy
Python Testing	/ceh-python-backend:python-testing	Writing Python unit or integration tests

TypeScript Frontend (ceh-typescript-frontend)

Skill	Invoke as	Auto-triggers when
SvelteKit	/ceh-typescript-frontend:sveltekit	Working on routes, stores, components, or the API client
Frontend Testing	/ceh-typescript-frontend:frontend-testing	Writing Vitest, Testing Library, MSW, or Playwright tests
Accessibility	/ceh-typescript-frontend:accessibility	Writing Svelte component markup

Operations (ceh-release-ops)