Open source · Agent Skills

Better agents need better judgment.

Give your AI agent the practical operating standards to take product and software work from an ambiguous brief to a review-ready result.

14
practice-built skills
155
focused references
1
connected quality system
The collection 14 skills one operating layer
A connected skill system spanning product, web, engineering, delivery, go-to-market, and professional communication.
Try one skill npx skills add sebastian-software/skills.sebastian-software.com --skill effective-web
Practice-built Evidence-led Progressively disclosed Portable Markdown First-party maintained

From prompt to practice

A working system for the parts between an idea and shipped work.

General models can produce plausible answers. These skills add the operating judgment: what evidence is missing, which tradeoff matters, where authority stops, and what must be verified before the work is done.

  1. 01

    Decide

    Make the right product call.

    Turn evidence into direction, scope, priorities, names, and durable decisions.

  2. 02

    Create

    Build the experience as one system.

    Connect design, implementation, accessibility, performance, language, and compliance.

  3. 03

    Improve

    Move repositories forward with evidence.

    Audit, modernize, port, review, and deliver without losing correctness or context.

  4. 04

    Reach

    Explain the value like a human.

    Turn expertise into positioning, useful conversations, credible content, and clear team communication.

The flagship skill

The web is one experience. Treat it that way.

Effective Web routes broad frontend work through the smallest relevant guidance set, then checks the result across design, implementation, accessibility, performance, and verification boundaries.

25intent routes
90focused references
1coherent quality bar
Explore Effective Web
Design & review Accessibility React architecture Forms UX Performance CSS architecture Typography Frontend SEO & AI search Motion SVG Data tables Testing Auth UX Internationalization & RTL Web-to-print

The complete collection

Choose one skill. Or give your agent the whole system.

Each skill has its own human-facing overview, explicit trigger, workflow, boundaries, focused references, and selective install path.

Web01

Effective Web

Design, build, review, and improve production web experiences as one connected system.

  • 25 routed workflows
  • Design to verification
Explore skill
Product02

Product Management

Turn customer and business evidence into focused product decisions and learning loops.

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Product03

Product Naming

Generate names creatively, then screen them as real multilingual identifiers.

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Product04

Decision Records

Keep important project reasoning understandable after the session and pull request end.

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Web05

Locale Typography

Make visible prose belong to the reader's locale across 26 language and region profiles.

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Web06

Web Legal Compliance

Turn vague compliance requests into jurisdiction-aware, evidence-backed web work.

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Engineering07

Codebase Improvement

Turn repository uncertainty into a few well-supported improvements and an executable next move.

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Engineering08

Port Codebases

Move systems across languages, runtimes, frameworks, and APIs without losing behavior.

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Engineering09

PR Review

Review and maintain GitHub pull requests like a warm, specific, technically serious teammate.

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Engineering10

Smart Dependency Updater

Turn version bumps into researched, validated, review-ready engineering changes.

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Growth11

Consultant Profile

Turn career history into a credible professional thesis for the right next engagement.

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Growth12

LinkedIn Social Selling

Build a coherent B2B path from a buyer problem to a useful conversation.

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Growth13

LinkedIn Posts

Find worthwhile ideas and turn them into specific, readable professional content.

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Language14

Metro English

Make professional English sound like a smart teammate wrote it quickly but carefully.

Explore skill

What makes the collection different

Plausible is easy. Reliable takes a system.

The skills encode the professional decisions that generic advice usually leaves implicit.

  1. 01

    Practice-built

    Distilled from engineering, design review, product work, consulting, and repeated agent sessions.

  2. 02

    Evidence-led

    Repository state, user data, research, and observed behavior outrank confident assumptions.

  3. 03

    Outcome-oriented

    Discovery, implementation, review, verification, and delivery stay connected.

  4. 04

    Progressively disclosed

    Agents load the smallest useful route and references, not the whole library every time.

  5. 05

    Explicit about boundaries

    Every skill states what it must not invent and when a specialist workflow is needed.

Start with one. Grow deliberately.

Install the skill you need today.

Both the skills CLI and DALO support selective installation. You do not need to adopt the full collection to use one skill.

01

Quick install

skills CLI

Try one skill immediately with any compatible agent environment.

npx skills add sebastian-software/skills.sebastian-software.com --skill effective-web

Replace effective-web with any skill name, or pass --all.

02

Managed setup

DALO

Pin reviewed selections and materialize them into one or more agent targets.

dalo source add-catalog sebastian https://github.com/sebastian-software/skills.sebastian-software.com.git dalo source select sebastian effective-web dalo approve skill sebastian:effective-web dalo sync

Catalog selections stay pinned; new repository skills never activate silently.

Built in the open

Professional practice, made portable.

Sebastian Software builds and supports open-source software and helps teams design, modernize, and ship ambitious software products. This collection turns that practical experience into inspectable, reusable agent workflows.