Comprehensive instructions for AI-assisted development with Claude Code
This repository also configures its own agents. See what claude-code-toolkit tells them →
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
REST API design patterns — naming, status codes, OpenAPI/Swagger, versioning. Triggers on api/endpoint/openapi/swagger keywords.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use when starting any new task to select the right GSD mode (fast/quick/plan-phase) and the right model tier (Haiku/Sonnet/Opus) for subagents — prevents 5-10× cost overpay on routine work.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Supreme Council integration with GSD plan/execute and audit workflows; verdict-handling rules (PROCEED/SIMPLIFY/RETHINK/SKIP).
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Database patterns — migrations, indexes, N+1 prevention, query optimization. Triggers on database/migration/query/sql/orm keywords.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Docker and container best practices — Dockerfile patterns, multi-stage builds, compose, security. Triggers on docker/container/dockerfile/compose keywords.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use before declaring work complete on business-critical phases — simulate a Senior practitioner (auth specialist, payment engineer, DBA, security auditor) reviewing the change with their failure-mode bias.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use when user requests work via natural language ("fix this", "add feature X") — selects appropriate GSD command (gsd-fast / gsd-quick / gsd-plan-phase) based on risk and scope, prevents using heavyweight pipeline for trivial work.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
LLM integration patterns — RAG, embeddings, streaming, tool use. Triggers on rag/embeddings/vector/llm/prompt keywords.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Logging, metrics, tracing, monitoring patterns. Triggers on logging/metrics/tracing/monitoring keywords.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use BEFORE coding any new feature, MVP, pricing/billing change, launch, or pivot. Acts as a product validation gate for solo founders — validates target user, JTBD, pain intensity, current alternative, success metric, distribution channel, structural advantage vs competitors, unit economics with SaaS-graveyard gate…
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use after deploying a phase to production, when integrating new external services, or when user-facing behavior changes — instruments runtime errors (Sentry), user funnels (Posthog), and pre-ship smoke (Playwright).
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Use after /gsd-ship to verify product behaves correctly in production — runs Playwright e2e against deployed URL, checks Sentry for new errors, validates Posthog conversion funnel.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
A repository-packing tool that combines a whole local or remote codebase into one XML, Markdown, or JSON file for AI review.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Deep expertise in Go - Gin/Chi patterns, concurrency, error handling, testing.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Deep expertise in Laravel - Eloquent, patterns, performance, security, testing.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Deep expertise in Python - FastAPI/Django, async patterns, Pydantic v2, SQLAlchemy 2.0.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Deep expertise in Ruby on Rails - ActiveRecord, patterns, performance, security, testing.
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test…
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex needs its repo
When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative…
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
When the user wants help with paid advertising campaigns on Google Ads, Meta (Facebook/Instagram), LinkedIn, Twitter/X, or other ad platforms. Also use when the user mentions 'PPC,' 'paid media,' 'ROAS,' 'CPA,' 'ad campaign,' 'retargeting,' 'audience targeting,' 'Google Ads,' 'Facebook ads,' 'LinkedIn ads,' 'ad…
sergei-aronsen/claude-code-toolkit
Skill Claude CodeCodex
Skill "ai-models" from sergei-aronsen/claude-code-toolkit, covering ai models — current versions, rule, claude (anthropic), python and typescript.
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: