Stop fighting your coding agent.Give it an operating system.
Claude Code Master Config, Verify Gate, and Dependency Guardrails: cleaner builds, fewer regressions, less context chaos.
Rules files and prompt systems for AI coding agents, built around scoped changes, stated assumptions, real testing, and clean handoffs, plus a wider catalog of prompt packs and Markdown systems. Made by a security engineer, with an overnight agent run adding to the shelf each week.
Flagship
Claude Code Master Config Bundle
Most AI coding mistakes come down to three things: the agent assumes instead of asking, it overcomplicates a simple fix, or it edits code nobody asked it to touch. This bundle is the rules file that closes all three: scoped changes only, assumptions stated before code gets written, a real testing step before anything's called done, and clean handoffs so the next session (yours or another agent's) doesn't have to re-derive context from scratch. Stack-specific addendums included for TypeScript/Node, React/Next.js, Python/FastAPI, SQL, REST, and Git.
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AI Coding Agent Project Starter Checklist
A small, copy-paste checklist for starting any project with a coding agent: scoped-change discipline, stating assumptions, a testing step, and a clean handoff note. Free preview of what's in the full bundle.
Active Inventory
Jev Gate Kit: Ship, Return or Escalate Every Agent Change
Four Jev decision gates for agent work, led by a ship / return / escalate gate for agent-written code. Python 3.12, standard library only, instant download.
Flutter 3.47 + Dart 3.13 + Riverpod 3 AI Config Bundle
A drop-in rules file that makes Claude Code, Cursor, Windsurf, and Copilot write Flutter + Riverpod 3 correctly instead of legacy StateNotifierProvider syntax and unguarded BuildContext-after-await crashes.
AI-Agent Regression Debugging Prompt System
8 documented prompts for root-causing a bug an AI coding agent introduced — for developers who lose an afternoon treating an agent-caused regression like a normal bug, when the actual fault is a silent assumption or scope-creep edit one or two steps upstream of the visible symptom.
AGENTS.md Sync Kit — Multi-Tool Agent Rules for Claude Code, Cursor & Copilot
One canonical rule set, correctly projected into CLAUDE.md, .cursor/rules, .github/copilot-instructions.md, and AGENTS.md — for developers and teams running more than one AI coding agent against the same repo, where a rule added to one tool's file silently never reaches the others.
AI Diff Security Scanner
A single offline HTML tool that scans a git diff (or raw code) against 14 deterministic security checks — hardcoded secrets, disabled TLS verification, SQL/command/eval injection, removed auth checks, and more — for developers who want a pre-merge security sanity check on AI-agent-written code.
Session Continuity Config Bundle
A drop-in CLAUDE.md rules file plus two ready-to-use templates that stop your AI coding agent from losing context between sessions — for developers whose Claude Code, Cursor, Windsurf, or Copilot sessions span more than one sitting.
Claude Code Master Config Bundle
Battle-tested behavioral rules for Claude Code — fixes the three failure modes that cause most AI coding mistakes.
Archive · Still purchasable
Older drops
Regression Risk Estimator
A single offline HTML tool that scores a git diff against 10 deterministic regression-risk checks — out-of-scope files, weakened tests, unpinned dependencies, and more — for developers who want a pre-merge sanity check before an AI-agent-written diff ships.
Go (Golang) Cursor Rules — Patterns AI Models Get Wrong
A terse, opinionated .cursor/rules file that stops Cursor, Claude Code, Windsurf, and Copilot from writing Go that compiles clean and misbehaves at runtime — for developers writing Go with an AI coding agent.
Dependency Guardrails — AI Agent Rules for Package Verification
A drop-in CLAUDE.md rules file that makes Claude Code, Cursor, Windsurf, and Copilot verify every package they add against the real registry before it lands in your lockfile — stops hallucinated ("slopsquatted"), abandoned, and typosquatted dependencies from AI coding agents.
Verify Gate — Independent AI Review Before You Push
A working git pre-push hook and CLI (zero npm dependencies) that runs a second, independent Claude review pass on your diff and blocks the push on a bad verdict — for developers on Claude Code, Cursor, Windsurf, or Copilot who ship AI-agent-written code with no independent check today.
PR Description & Changelog Generator Prompt System
8 documented prompts that turn a diff into a real PR description, commit message, changelog entry, release notes, and migration guide — for developers whose AI-agent-written code ships with a rushed one-line PR description instead of a handoff a reviewer or teammate can actually use.
Independent Reviewer & Scope-Creep Detector System Prompt Kit
Two system prompts for running a genuine second-opinion reviewer persona on AI-agent-written code — for developers on Claude Code, Cursor, Windsurf, or Copilot who want a real independent check before merging, not a self-review from the same context that wrote the code.
Agent Rules Linter
A single offline HTML tool that scores a CLAUDE.md, .cursor/rules, or AGENTS.md file against 12 checks tied to the concrete failure modes that make AI coding agents unreliable — for developers who already have a rules file and want to know if it's actually doing its job.
Event Planner & Event Planning Business AI Prompt Pack
50 professional AI prompts for independent event and wedding planners, event-planning business owners, and coordinators — covering proposals and event documentation, the contract/deposit/cancellation/force-majeure/liability/insurance/permit work that defines the business's risk, client communications, vendor and venue coordination, marketing, and operations.
Vue 3.5 + Nuxt 4 + Nitro AI Config Bundle
A drop-in rules file that makes Claude Code, Cursor, Windsurf, and Copilot write Vue 3.5 and Nuxt 4 (Nitro) correctly instead of legacy Nuxt 3 structure and Vue 2 Options API.
Landscaper & Lawn Care Business AI Prompt Pack
50 professional AI prompts for independent landscaping and lawn care business owners, crew leads, and certified pesticide applicators — covering service documentation, the pesticide-application/licensing/FIFRA compliance work that defines the trade, client communications, customer education, marketing, and operations.
Svelte 5 + SvelteKit 2 + Tailwind v4 AI Config Bundle
A drop-in rules file that makes Claude Code, Cursor, Windsurf, and Copilot write Svelte 5 (runes), SvelteKit 2, and Tailwind v4 correctly instead of legacy Svelte 4 syntax.
Med Spa & Aesthetic Practice AI Prompt Pack
50 professional AI prompts for medical spa owners, RN and NP injectors, aesthetic NPs and PAs, estheticians, medical directors, and front-desk teams — covering treatment documentation, the good-faith exam, scope-of-practice and medical-director compliance, patient communications, education, marketing, and practice operations.
Auto Repair Shop & Service Advisor AI Prompt Pack
50 professional AI prompts for independent auto repair shop owners, service advisors, and front-office staff — covering repair-order documentation, the written estimate and customer-authorization workflow, state repair-disclosure compliance, customer communications, education, marketing, and shop operations.
Audiologist & Hearing Care Practice AI Prompt Pack
50 professional AI prompts for audiologists, associates, hearing instrument specialists, practice owners, and front-office staff — covering evaluation and fitting documentation, hearing-aid dispensing and OTC-rule compliance, Medicare/benefit explanation, patient education, communications, marketing, and operations.
Dermatologist & Dermatology Practice AI Prompt Pack
50 professional AI prompts for dermatologists, associates, PAs/NPs, practice owners, aestheticians, and office staff — covering procedure notes, medical-necessity documentation, cosmetic consent and FTC advertising compliance, patient education, communications, marketing, and operations.
Optometrist & Optometry Practice AI Prompt Pack
50 professional AI prompts for optometrists (ODs), associates, practice owners, opticians, and office staff — covering exam documentation, the medical-vs-routine billing workflow, patient education, communications, marketing, and operations.
Podiatrist & Podiatry Practice AI Prompt Pack
50 professional AI prompts for podiatrists (DPMs), associates, practice owners, and office staff — covering SOAP and wound documentation, Medicare medical-necessity narratives, patient education, communications, marketing, and operations.
Property Manager & Property Management Business AI Prompt Pack
50 professional AI prompts for residential property managers, management-company owners, leasing agents, and self-managing landlords — covering tenant notices, Fair-Housing-compliant leasing, owner reporting, maintenance, growth, and operations.
General Contractor & Construction Business AI Prompt Pack
50 professional AI prompts for general contractors, remodelers, and builders — covering proposals, change orders and project documentation, client communications, marketing, business development, and crew operations.
Mortgage Broker & Loan Officer AI Prompt Pack
50 professional AI prompts for mortgage brokers and loan officers — covering pre-approval letters, compliant advertising, borrower education, pipeline retention, referral partnerships, and practice operations.
Speech-Language Pathologist & Speech Therapy Practice AI Prompt Pack
50 professional AI prompts for speech-language pathologists in school and medical settings — covering evaluation reports, IEP goals, dysphagia documentation, home programs, patient communications, marketing, and practice operations.
Physical Therapist & Physical Therapy Practice AI Prompt Pack
50 professional AI prompts for physical therapists and PT practice teams — covering SOAP documentation, Medicare compliance, home exercise programs, patient communications, marketing, and practice operations.
Veterinarian & Veterinary Practice AI Prompt Pack
50 professional AI prompts for veterinarians and veterinary teams — covering SOAP documentation, client communications, owner education, marketing, business development, and team management.
Social Worker & LCSW AI Prompt Pack
50 professional AI prompts for licensed clinical social workers — covering clinical documentation, safety planning, psychoeducation, case management, practice marketing, and business operations.
Nutritionist & Registered Dietitian AI Prompt Pack
50 AI prompts covering the full RD practice workflow — clinical documentation, patient education, communications, marketing, business development, and practice operations.
Chiropractor & Chiropractic Practice AI Prompt Pack
50 AI prompts engineered for chiropractors — SOAP notes and clinical documentation, patient communications and reactivation, practice marketing, patient education, business development, and practice operations.
Dentist & Dental Practice AI Prompt Pack
50 AI prompts engineered for dental professionals — patient communications, clinical documentation, practice marketing, team operations, patient education, and business development.
Executive Coach & Leadership Coach AI Prompt Pack
50 professional-grade AI prompts for executive coaches and leadership coaches — session prep, leadership frameworks, communication coaching, business development, assessments, and practice operations.
Personal Trainer & Fitness Coach AI Prompt Pack
50 professional-grade AI prompts for personal trainers and fitness coaches — client programming, nutrition communication, marketing content, business development, and practice management.
Financial Advisor & Wealth Manager AI Prompt Pack
50 professional-grade AI prompts for financial advisors and wealth managers — client communications, financial planning narratives, compliance documentation, market commentary, and business development.
Lawyer & Attorney AI Prompt Pack
50 professionally engineered AI prompts for solo practitioners and small firm attorneys — covering client intake, contracts, demand letters, legal memos, marketing, and practice operations.
Accountant & CPA AI Prompt Pack
50 AI prompts for accountants, CPAs, and tax preparers — tax planning letters, client communications, financial analysis narratives, compliance advisories, practice marketing, and bookkeeping workflow.
Therapist AI Prompt Pack
50 HIPAA-safe prompts for private practice therapists — marketing, intake, client communications, and practice operations.
Real Estate Agent AI Prompt Pack
48 prompts for real estate agents — listing descriptions, lead generation, client communications, market reports, and social content.
Marketer & Copywriter AI Prompt Pack
47 prompts for the complete marketing and copywriting workflow — from positioning and landing pages to email sequences, ad copy, and social posts.
Job Seeker AI Prompt Pack
45 AI prompts for the complete job search — built for 2026's AI-saturated hiring market where generic applications get filtered on arrival.
YouTube Creator AI Prompt Pack
45 AI prompts for YouTube creators covering ideation, scripting, SEO, community, sponsorships, and channel growth — each with full context, placeholders, expected output, and usage notes.
Freelancer AI Prompt Pack
40 copy-paste-ready AI prompts for freelancers — covering proposals, pricing, scope, client emails, and business admin.
Supabase + Next.js App Router Bundle
A 1,017-line CLAUDE.md rules file that corrects the patterns AI models get wrong when building Supabase apps with Next.js App Router — covering auth, RLS, storage, realtime, and Edge Functions.
tRPC v11 + Next.js App Router Bundle
A 912-line CLAUDE.md rules file that fixes the v10→v11 migration mistakes AI models make when building tRPC APIs with Next.js App Router and React Query v5.
Drizzle ORM + Hono Cloudflare Workers Bundle
A complete CLAUDE.md rules file for building Cloudflare Workers APIs with Hono and Drizzle ORM — covers D1, KV, R2, RPC mode, and the 10 mistakes every model makes.
Hono + Cloudflare Workers Bundle
A complete CLAUDE.md rules file for Hono on Cloudflare Workers. Covers D1, KV, R2, Queues, RPC mode, middleware, and 8 mistakes every model makes.
Drizzle ORM Bundle
A complete CLAUDE.md rules file for Drizzle ORM. Covers schema definition, relations, migrations, all major adapters, and the 10 most hallucinated patterns — with fixes.
Python + FastAPI Bundle
A complete CLAUDE.md rules file for Python + FastAPI projects. Covers async patterns, Pydantic v2, dependency injection, SQLAlchemy 2.0, and production deployment patterns.
Remix v2 + Prisma Bundle
A complete CLAUDE.md rules file for Remix v2 with Prisma. Covers loaders, actions, nested routing, Prisma schema patterns, and common migration gotchas.
About
Built by a security engineer who reads what the agents ship
Nightforge is run by Donovan, a security engineer whose work is stopping overnight AI coding agents from landing unverified code on main. The flagship line is rules files and prompt systems for those agents, built around the failures that work keeps catching. A weekly agent run adds new products to the shelf inside rules Donovan wrote. The rest of the shelf (prompt packs, research briefs, Markdown systems) is still browsable above.