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Percy Visual Testing

Testing & Quality
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Percy visual testing platform integration for visual regression detection

QUICK START

How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/a5c-ai/babysitter/blob/HEAD/library/specializations/qa-testing-automation/skills/percy-visual/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/percy-visual-testing/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Percy Visual Testing Skill

Overview

This skill provides expert-level capabilities for Percy-based visual testing, enabling snapshot capture, visual diff analysis, and seamless CI/CD integration.

Capabilities

Snapshot Capture

  • Capture visual snapshots across viewports
  • Configure responsive testing breakpoints
  • Handle dynamic content masking
  • Full-page and element snapshots

Visual Diff Analysis

  • Analyze visual diffs between builds
  • Identify intentional vs unintentional changes
  • Configure diff sensitivity

Baseline Management

  • Manage Percy baseline approvals
  • Handle baseline branching
  • Configure auto-approval rules

CI/CD Integration

  • Configure Percy with CI/CD pipelines
  • GitHub/GitLab integration
  • Pull request visual reviews

Framework Integration

  • Integrate with Playwright
  • Integrate with Cypress
  • Integrate with Selenium
  • Storybook integration

Target Processes

  • visual-regression.js - Visual regression testing
  • e2e-test-suite.js - E2E with visual validation
  • cross-browser-testing.js - Cross-browser visual testing

Dependencies

  • @percy/cli - Percy CLI
  • @percy/playwright / @percy/cypress - Framework SDKs
  • Percy account and token

Usage Example

{
  kind: 'skill',
  skill: {
    name: 'percy-visual',
    context: {
      action: 'capture-snapshots',
      testSuite: 'e2e',
      widths: [375, 768, 1280],
      branch: 'feature/new-design'
    }
  }
}

Configuration

The skill requires a Percy token and can be configured to work with various testing frameworks.