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diffity-diff▌

kamranahmedse/diffity · updated Apr 8, 2026

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$npx skills add https://github.com/kamranahmedse/diffity --skill diffity-diff
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summary

You are opening the diffity diff viewer so the user can see their changes in the browser.

skill.md

Diffity Diff Skill

You are opening the diffity diff viewer so the user can see their changes in the browser.

Arguments

  • ref (optional): Git ref to diff (e.g. main..feature, HEAD~3) or a GitHub PR URL (e.g. https://github.com/owner/repo/pull/123). Defaults to working tree changes.

Instructions

  1. Check that diffity is available: run which diffity. If not found, install it with npm install -g diffity.

  2. Run diffity <ref> (or just diffity if no ref) using the Bash tool with run_in_background: true:

    • The CLI handles everything: if an instance is already running for this repo it reuses it and opens the browser, otherwise it starts a new server and opens the browser.
    • Do NOT use & or --quiet — let the Bash tool handle backgrounding.

  3. Wait 2 seconds, then run diffity list --json to get the port.

  4. Tell the user diffity is running. Print the URL and keep it short — don't show session IDs, hashes, or other internals. Example:

    Diffity is running at http://localhost:5391

    When you're ready:

    • Leave comments on the diff in your browser, then run /diffity-resolve to fix them
    • Or run /diffity-review to get an AI code review
how to use diffity-diff

How to use diffity-diff on Cursor

AI-first code editor with Composer

1

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

  • ›Cursor installed and configured on your development machine
  • ›Node.js version 16.0+ with npm package manager (verify with node --version)
  • ›Active project directory or workspace where you want to add diffity-diff
2

Execute installation command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/kamranahmedse/diffity --skill diffity-diff

The skills CLI fetches diffity-diff from GitHub repository kamranahmedse/diffity and configures it for Cursor.

3

Select Cursor when prompted

The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:

◆ Which agents do you want to install to?
│
│ ── Universal (.agents/skills) ── always included ────
│ • Amp
│ • Antigravity
│ • Cline
│ • Codex
│ ●Cursor(selected)
│ • Cursor
│ • Windsurf
4

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/diffity-diff

Reload or restart Cursor to activate diffity-diff. Access the skill through slash commands (e.g., /diffity-diff) or your agent's skill management interface.

⚠

Security & Verification Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.

Additional Resources

›View source code on GitHub›Skills CLI documentation›Learn more about Cursor›What are agent skills?

List & Monetize Your Skill

Submit your Claude Code skill and start earning

GET_STARTED →

Use Cases▌

User Story & Requirements Generation

Create detailed user stories, acceptance criteria, and feature specs

Example

Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios

✓

Reduce spec writing time by 50%, ensure comprehensive coverage

Competitive Analysis

Research competitors, compare features, identify gaps

Example

Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities

✓

Complete competitive research in 2 hours instead of 2 days

Roadmap Prioritization

Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs

Example

Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale

✓

Make data-driven prioritization decisions faster

Stakeholder Communication

Draft PRDs, status updates, and stakeholder presentations

Example

Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement

✓

Save 3-5 hours/week on communication overhead

Implementation Guide▌

Prerequisites

  • ›Claude Desktop or compatible AI client
  • ›Access to product documentation and roadmap tools (Jira, Notion, etc.)
  • ›Understanding of product management frameworks (RICE, Jobs-to-be-Done, etc.)
  • ›Stakeholder contact information and communication channels

Time Estimate

30-60 minutes to see productivity improvements

Installation Steps

  1. 1.Install product management skill
  2. 2.Start with user story generation for known feature
  3. 3.Progress to competitive analysis: research 2-3 competitors
  4. 4.Use for roadmap prioritization: apply RICE/ICE scoring
  5. 5.Draft stakeholder communications and refine based on feedback
  6. 6.Build template library for recurring PM tasks
  7. 7.Share effective prompts with product team

Common Pitfalls

  • ⚠Not validating competitive research—verify facts before sharing
  • ⚠Accepting user stories without involving engineering team
  • ⚠Over-relying on frameworks without qualitative judgment
  • ⚠Not customizing outputs to company culture and communication style
  • ⚠Skipping stakeholder validation of generated requirements

Best Practices▌

✓ Do

  • +Validate research and competitive analysis with real data
  • +Collaborate with engineering when generating technical requirements
  • +Customize frameworks and templates to your company context
  • +Use skill for first drafts, refine with stakeholder input
  • +Document successful prompt patterns for PM tasks
  • +Combine AI efficiency with human judgment and intuition

✗ Don't

  • −Don't publish competitive analysis without fact-checking
  • −Don't finalize user stories without engineering review
  • −Don't make prioritization decisions solely on AI scoring
  • −Don't skip customer validation of generated requirements
  • −Don't ignore company-specific context and culture

💡 Pro Tips

  • ★Provide context: company goals, constraints, customer feedback
  • ★Ask for alternatives: 'Show 3 ways to prioritize this roadmap'
  • ★Request stakeholder-specific formatting: 'Executive summary vs. engineering spec'
  • ★Use skill for 70% generation + 30% customization to company needs

When to Use This▌

✓ Use When

Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.

✗ Avoid When

Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.

Learning Path▌

  1. 1Basic: user stories, feature specs, status updates
  2. 2Intermediate: competitive analysis, prioritization frameworks, PRDs
  3. 3Advanced: product strategy, go-to-market planning, OKR setting
  4. 4Expert: product vision, market positioning, business model innovation

Discussion

Product Hunt–style comments (not star reviews)
  • No comments yet — start the thread.
general reviews

Ratings

4.8★★★★★32 reviews
  • ★★★★★Sakura Shah· Dec 28, 2024

    diffity-diff has been reliable in day-to-day use. Documentation quality is above average for community skills.

  • ★★★★★Maya Gill· Dec 28, 2024

    diffity-diff reduced setup friction for our internal harness; good balance of opinion and flexibility.

  • ★★★★★Dhruvi Jain· Dec 20, 2024

    Solid pick for teams standardizing on skills: diffity-diff is focused, and the summary matches what you get after install.

  • ★★★★★Soo Martin· Nov 19, 2024

    diffity-diff fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • ★★★★★Carlos Thompson· Nov 19, 2024

    I recommend diffity-diff for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.

  • ★★★★★Oshnikdeep· Nov 11, 2024

    We added diffity-diff from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • ★★★★★Sakura Khanna· Nov 11, 2024

    Keeps context tight: diffity-diff is the kind of skill you can hand to a new teammate without a long onboarding doc.

  • ★★★★★Naina Thompson· Oct 10, 2024

    We added diffity-diff from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • ★★★★★Carlos Desai· Oct 10, 2024

    Useful defaults in diffity-diff — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • ★★★★★Ganesh Mohane· Oct 2, 2024

    diffity-diff fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

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