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FrontendMarkdown

Handoff Spec

by Owl-Listener

Handoff Spec is a Frontend skill for Claude Code, published by Owl-Listener in designer-skills.

2.1K stars335 forkson Owl-Listener/designer-skillsAdded 2026/08/18+2% in starsRepository updated 2026/08/08

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agenticagentic-aiaiai-toolsclaude-codedesign-systemdesign-systemsprompt-engineeringskillsux-design

Install in seconds

Install Handoff Spec

Copy Handoff Spec into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/Owl-Listener/designer-skills/tree/main/design-ops/skills/handoff-spec ~/.claude/skills/handoff-spec

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/Owl-Listener/designer-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: design-ops/skills/handoff-spec/SKILL.md in Owl-Listener/designer-skills
Installs to: ~/.claude/skills/handoff-spec
Collection: One of 25 skills cataloged from this repository
Category: Frontend — 567 skills

What Handoff Spec does

Handoff Spec writes implementation handoffs with measurements, behaviors, assets, states, and edge cases so developers can build a design accurately.

Handoff Spec is cataloged under Frontend on DirSkills. Handoff Spec comes from a repository tagged agentic, agentic-ai, ai, ai-tools and claude-code.

Documentation

README

From the original repository

Handoff Spec

You are an expert in creating clear, complete developer handoff specifications.

What You Do

You create handoff documents that give developers everything needed to implement a design accurately.

Handoff Contents

Visual Specifications

Spacing and sizing (exact pixel values or token references)
Color values (token names, not hex codes)
Typography (style name, size, weight, line-height)
Border radius, shadows, opacity values
Responsive breakpoint behavior

Interaction Specifications

State definitions (default, hover, focus, active, disabled)
Transitions and animations (duration, easing, properties)
Gesture behaviors (swipe, drag, pinch)
Keyboard interactions (tab order, shortcuts)

Content Specifications

Character limits and truncation behavior
Dynamic content rules (what changes, min/max)
Localization considerations (text expansion, RTL)
Empty, loading, and error state content

Asset Delivery

Icons (SVG, named per convention)
Images (resolution, format, responsive variants)
Fonts (files or service links)
Any custom illustrations or graphics

Edge Cases

Minimum and maximum content scenarios
Responsive behavior at each breakpoint
Browser/device-specific considerations
Accessibility requirements (ARIA, keyboard, screen reader)

Implementation Notes

Component reuse suggestions
Data structure assumptions
API dependencies
Performance considerations

Best Practices

Use design tokens, not raw values
Annotate behavior, not just appearance
Include all states, not just the happy path
Provide redlines for complex layouts
Walk through the handoff with the developer

Frequently asked about Handoff Spec

What else does Owl-Listener publish alongside Handoff Spec?
Handoff Spec is one of 25 skills that DirSkills catalogs from Owl-Listener/designer-skills, the repository it ships in. Its siblings there include Accessibility Audit, Affinity Diagram and Card Sort Analysis. Each one is a separate skill with its own page in this directory, installs the same way Handoff Spec does, and is maintained by Owl-Listener in that same repository. The rest of the collection is listed on the Owl-Listener/designer-skills page.
How does Handoff Spec compare to other Frontend skills?
Handoff Spec ranks #245 by stars among the 567 Frontend skills in this catalog. The most-starred ones next to it are Angular Developer, Android Clean Architecture and Accessibility. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Handoff Spec against them. Open each page to compare what they document and how they install.

More from Owl-Listener/designer-skills

Handoff Spec is one of 25 skills cataloged on DirSkills from Owl-Listener/designer-skills.

See all 25 skills →

Accessibility Audit

Accessibility Audit examines an existing interface against WCAG criteria, identifies barriers, and provides severity-rated findings with remediation steps. Use it when you have a design or build to assess now, not for planning future assistive-technology testing sessions.

Affinity Diagram

Affinity Diagram clusters qualitative data points into themes and insight statements. Use it when synthesising across multiple sessions or sources to create a structured hierarchy with supporting evidence.

Card Sort Analysis

Card Sort Analysis analyzes open or closed card sort results into a proposed grouping and label set. Use it after running a sort study to inform navigation and content organization.

Component Spec

Component Spec specifies one component's props, states, variants, accessibility, and usage rules. Use when defining a library component.

Design Critique

Design Critique facilitates structured team critique sessions, guiding framing, feedback rules, and actionable outcomes. Use it when running a session with people in the room to keep feedback constructive and aligned.

Design Debt Audit

Design Debt Audit inventories and prioritizes accumulated design inconsistencies across a product so teams can plan remediation. Use it before redesigns or when UI drift, accessibility gaps, and structural debt have built up.

More Frontend skills

Handoff Spec is one of 567 Frontend skills cataloged on DirSkills, ranked #245 by stars among them.

Browse all Frontend skills →

Angular Developer

Angular Developer generates Angular code and provides architectural guidance for Angular projects. Use it for creating projects, components, or services, or for best practices on reactivity, forms, DI, routing, SSR, accessibility, animations, styling, testing, and CLI tooling.

Android Clean Architecture

Android Clean Architecture provides patterns for structuring Android and Kotlin Multiplatform projects, covering module boundaries, UseCases, Repositories, and data layer with Room, SQLDelight, and Ktor. Use it when setting up layered architecture in Android or KMP projects.

Accessibility

Accessibility helps design, implement, and audit inclusive digital products using WCAG 2.2 Level AA standards for keyboard, contrast, and screen-reader support. Use it when building or auditing UI that must meet WCAG 2.2 Level AA or reviewing changes for accessibility.