# F-e-u-e-r > Open-source publisher. Listings imported from github.com/F-e-u-e-r — credited to the original author with their license. - **Listings:** 12 - **Total installs:** 0 - **Profile:** https://agentstack.voostack.com/s/f-e-u-e-r - **Website:** https://github.com/F-e-u-e-r ## Published listings - [Security Architect](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-security-architect) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-security-architect` Pragmatic security architect for a non-security-expert owner. Covers auth design (JWT/OAuth/sessions), where secrets and tokens live on each platform (iOS/Android/macOS/Windows/Linux/web), MITM and TLS, web vulns (XSS/CSRF/CORS/CSP), backend authorization (IDOR, injection, webhooks, rate limits), database rules (Supabase RLS/Firestore/Postgres policies), and AI-agent/MCP tool permissions. Load wh… - [Skill Authoring](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-skill-authoring) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-skill-authoring` How to write skills, CLAUDE.md/AGENTS.md, fix logs, and handoff documents that a weaker or zero-context model can actually execute. Load when authoring or updating any instruction file, SKILL.md, project memory, or institutional-knowledge document — including when converting lessons from a session into durable files — and when about to act on a recorded capability-negative ("no such flag", "the A… - [Motion Craft](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-motion-craft) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-motion-craft` Implementation-agnostic motion judgment for product UI. Load when you are adding, reviewing, or tuning animation in any framework - durations, easings, springs, staggers, entrances/exits, gesture handoff, reduced motion - when a spec says "smooth" or "delightful" with no numbers attached, or when you notice animation being judged by feel instead of against a budget. NOT for debugging one animatio… - [Delegation And Review](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-delegation-and-review) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-delegation-and-review` Rules for delegating work to subagents and judging what comes back — when to spawn vs. do it yourself, how to write a dispatch packet, how to review agent-produced changes without rubber-stamping, when to retry vs. change approach vs. ask the user, and how to hand off long-running work across sessions. Load when about to spawn a subagent or write a dispatch prompt, when fanning out parallel work,… - [Product Roadmap](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-product-roadmap) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-product-roadmap` Product-owner planning partner — turns a goal plus the repo's actual state into a verdict, a Now/Next/Later/Not-now roadmap, milestones with acceptance criteria, and agent-ready tasks. Load when the user asks "what should we build next?", any roadmap/milestone/release/MVP/priority/PRD question, wants the current repo assessed for product direction, or wants similar GitHub projects mined for insig… - [Design Review Gate](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-design-review-gate) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-design-review-gate` Turns design review into observable checks. Load when you are judging a built UI surface ("does this look right/professional?", a visual QA request, before/after comparison of styling work), when generated design variants need comparison, or when any design document is about to be adopted, authored, or treated as authoritative - a DESIGN.md, tokens file, brand guide, or a reverse-engineered compe… - [Ui Design Craft](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-ui-design-craft) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-ui-design-craft` Static visual judgment for generated or restyled UI. Load when you are about to produce or modify any user-facing surface - a landing/marketing page, product screen, mockup, or component styling - when a brief says "make it look good/premium/modern" with no design system attached, or when you notice generated UI converging on default AI aesthetics. NOT for motion decisions (motion-craft), for run… - [Cross Model Review](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-cross-model-review) — Skill · Free — `agentstack add skill-f-e-u-e-r-opus-pack-cross-model-review` Get an adversarial review from a DIFFERENT model family before a load-bearing merge/ship — the mechanized form of "the author is not the judge" when the strongest independent lens is another model, not just a fresh-context subagent of your own. Load when about to merge/ship load-bearing work (code, or a load-bearing plan/spec/doctrine doc), or when the user asks to get an external/second model to… - [Operational Rigor](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-operational-rigor) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-operational-rigor` Core execution discipline for any non-trivial task — multi-step work, anything that modifies files or systems, debugging, or work whose correctness matters, even when the user does not ask for rigor. The latest load moment is observable — you are about to take your first mutating action (edit, write, state-changing command); loading earlier is better, and if you notice you are already past it, lo… - [Ground Truth Gates](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-ground-truth-gates) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-ground-truth-gates` Build executable verification gates (golden set, replay corpus, project checks) so "it works" becomes a checked fact instead of a claim. Load when changing any LLM-judgment step (classify/extract/route/prompt), refactoring logic that processes real logged data, designing tests for a fix, setting up a commit/ship gate for a project, designing a runtime guard (a hook, validator, or auth check) and… - [Personal Goal Planning](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-personal-goal-planning) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-personal-goal-planning` Coach-style personal goal planning — a five-step protocol that turns a person's situation into tiered goals (2–4 weeks / 2–3 months / 6–12 months) with one mainline, a small set of executable tasks, a realistic weekly rhythm, and a weekly review loop with a stuck rule. Load when the user asks to plan personal or career goals, a study/fitness/side-project plan, "help me figure out what to focus on… - [Domain Evidence Discipline](https://agentstack.voostack.com/l/skill-f-e-u-e-r-opus-pack-domain-evidence-discipline) — Skill · Free · security-reviewed — `agentstack add skill-f-e-u-e-r-opus-pack-domain-evidence-discipline` Evidence discipline for non-code deliverables — marketing copy, research reports, data analyses, business/ops documents. Defines, per domain, what counts as evidence, the typed authority order, what verification-by-observation means, and the fraud table a reviewer hunts. Load when producing OR judging a non-code work product whose correctness depends on sources and claims rather than a runtime. N… --- Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add `.