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© 2026 Curated Agent Skills·Learn more about Agent Skills
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Expert collection · 25 stable skills

Addy Osmani Agent Skills

A production engineering system spanning definition, planning, building, verification, review, and launch.

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How this collection thinks

Addy’s collection encodes a broad senior-engineering lifecycle with explicit human checkpoints and quality gates. It couples implementation disciplines with security, accessibility, performance, observability, CI/CD, migration, and launch practices, then evaluates whether skills trigger and behave as intended across the catalog.

Install

npx skills add addyosmani/agent-skills

Best for

Engineering teams and production applications that need a shared lifecycle vocabulary, broad cross-agent support, review gates, and operational checks beyond the inner coding loop.

Trade-offs

The breadth creates more ceremony for small changes, and the collection is less like a single personal run than Matt’s. Teams should adopt its lifecycle intentionally instead of loading every skill without agreeing on checkpoints.

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Our reviewed entry points

These are the skills with the clearest standalone value. Each review explains the benefit and the cost.

Addy Osmani
Requirements

Interview Me

Interview Me is Addy’s strongest entry point for vague work. It asks one question at a time until underlying intent is clear, creating a measured human checkpoint before the broader lifecycle begins.

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Addy Osmani
Planning

Spec-Driven Development

A strong bridge between discovery and implementation. It expresses a change as independently testable capabilities, making large requests easier to review, sequence, and hand to agents without turning the specification into implementation trivia.

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Addy Osmani
Review

Code Review and Quality

A broad pre-merge review that treats correctness as only one axis. Its value is the systematic inclusion of maintainability, test quality, security, and performance before a change enters main.

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Addy Osmani
Security

Security and Hardening

Security and Hardening widens an agent’s implementation lens to trust boundaries, untrusted input, sessions, data handling, external integrations, and privacy. It is one of the clearest capabilities Addy’s lifecycle adds beyond an inner-loop coding methodology.

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Addy Osmani
Operations

Shipping and Launch

Shipping and Launch makes deployment an engineering phase rather than the moment after tests pass. It forces explicit monitoring, staged exposure, rollback, ownership, and go/no-go evidence.

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Stable inventory

All 25 curated skills

In-progress experiments are excluded from this editorial collection.

Architecture

API and Interface Design

Designs stable public APIs, module contracts, and frontend-backend boundaries.

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Documentation and ADRs

Captures architectural context and decisions that future engineers and agents need.

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Testing

Browser Testing With DevTools

Verifies browser behavior through DOM, console, network, visual, and performance evidence.

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Test-Driven Development

Drives behavior changes through enforced red-green-refactor cycles.

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Operations

CI/CD and Automation

Builds deployment pipelines with automated quality gates and release strategies.

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Deprecation and Migration

Plans safe transitions away from old APIs, systems, and behavior.

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Observability and Instrumentation

Adds logs, metrics, traces, and alerts that make production behavior diagnosable.

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Shipping and Launch

Prepares monitoring, staged rollout, rollback, and pre-launch verification.

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Review

Code Review and Quality

Reviews changes across correctness, maintainability, testing, security, and performance.

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Code Simplification

Reduces accidental complexity without changing externally visible behavior.

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Quality

Constraint-Driven Development

Writes a quality contract and prevents agents from weakening checks to reach green.

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Doubt-Driven Development

Subjects non-trivial decisions to adversarial fresh-context review before they stand.

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Agent Design

Context Engineering

Controls what an agent sees, when it sees it, and how project rules are structured.

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Debugging

Debugging and Error Recovery

Finds root causes systematically when tests, builds, or runtime behavior fail.

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Frontend

Frontend UI Engineering

Builds accessible, responsive, production-quality interfaces instead of generic AI UI.

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Git

Git Workflow and Versioning

Structures branching, commits, pull requests, releases, and parallel work.

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Discovery

Idea Refine

Expands and stress-tests a raw concept before converging on what deserves to be built.

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Build

Incremental Implementation

Ships multi-file work as small independently verifiable increments.

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Requirements

Interview Me

Extracts underlying intent through one-question-at-a-time requirements interviews.

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Performance

Performance Optimization

Profiles and improves frontend, backend, query, and database performance.

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Planning

Planning and Task Breakdown

Turns a clear specification into ordered, testable, and parallelizable tasks.

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Spec-Driven Development

Creates a capability-oriented specification before substantial implementation begins.

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Security

Security and Hardening

Hardens authentication, input handling, storage, integrations, and privacy boundaries.

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Research

Source-Driven Development

Grounds implementation decisions in current official documentation and cited sources.

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Workflow

Using Agent Skills

Routes incoming work to the appropriate lifecycle skill and shared operating rules.

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