Systematically test all pages for errors, functionality, and proper rendering using Playwright MCP

Use when symfony e2e panther playwright

Diagnose and resolve E2E test failures in Playwright. This skill should be used when E2E tests fail and need investigation, when Playwright test errors require root cause analysis, or when test failures need to be reproduced in the browser for debugging. Orchestrates MCP tools (Playwright, Chrome DevTools, Serena) and delegates code fixes to specialized agents.

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Playwright end-to-end testing expert. Use when writing E2E tests, browser automation, or debugging flaky tests.

Production E2E testing for The Simpsons API using Chrome DevTools MCP for browser automation and Neon MCP for real-time database verification. Covers smoke journeys, mutation validation, and deployment sanity checks. Use when the user asks to run, design, or validate E2E tests against the production site, verify live deployments, or perform post-deploy checks.

Execute comprehensive role-based E2E testing with Playwright, testing all user flows for each role

Generates end-to-end tests for complete user workflows

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Build reliable end-to-end tests for critical user flows.

Execute end-to-end test scenarios against running microservices with automatic debugging and reporting.

Design E2E tests following user-story-driven patterns with verification checkpoints. Use when creating end-to-end tests, validating complete user journeys, or designing Playwright/Cypress test patterns.

This skill helps fix three critical E2E test issues:

Create comprehensive E2E test plans with deep application analysis, navigation coverage audit, and browser-testable scenarios

e2e-test-runner

End-to-end testing scenarios for Supabase - complete workflow tests from project creation to AI features, validation scripts, and comprehensive test suites. Use when testing Supabase integrations, validating AI workflows, running E2E tests, verifying production readiness, or when user mentions Supabase testing, E2E tests, integration testing, pgvector testing, auth testing, or test automation.

Write comprehensive end-to-end tests using Playwright with page object

End-to-end testing using Playwright MCP. Automate user workflows, take screenshots, validate UI/UX, perform visual regression testing, and verify complete user journeys. Use after feature implementation or before deployment.

Build autonomous end-to-end full-stack testing agents using Claude's Computer Use API, LangGraph orchestration, and hybrid Playwright automation. Use this skill when building testing infrastructure, test automation, CI/CD test integration, or self-healing test systems.

Build end-to-end automated tests that simulate real user interactions across the full application stack. Use for E2E test, Selenium, Cypress, Playwright, browser automation, and user journey testing.

End-to-end testing patterns for backend services. Use when testing complete application flows.

End-to-end testing expert for Playwright, Cypress, visual regression (Percy, Chromatic), and UI testing. Use for E2E tests, browser automation, visual diffs, or debugging flaky tests.

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E2E Validator Skill

Create resilient E2E tests using Playwright/Cypress

Write E2E tests with Playwright using selector best practices. Use when you need to write end-to-end integration tests, user scenarios, or complete workflows.

Run E2E tests for Sentry JavaScript SDK test applications

Explain enterprise architecture concepts in practical terms. Use when learning about TOGAF, Zachman, ADRs, or any EA terminology.

Specialized skill for editing and refining EAD2002 finding aids for the Terrence Kaufman Papers at the Archive of Indigenous Languages of Latin America (AILLA), Lillas Benson Latin American Studies and Collections, University of Texas at Austin. Use when working with KaufmanEAD.xml, implementing staff feedback, validating against EAD2002 standards, or referencing institutional finding aid examples.

Design system architecture from 10,000 feet. Soar above the codebase, survey the landscape, and create blueprints that stand the test of time. Use when planning major features, refactoring systems, or mapping how components interact.

earned-media-strategy

Analyzes why stocks moved after 8-K earnings filings. Use ultrathink for all analyses. Invoke when asked to analyze stock movements, earnings reactions, or determine the primary driver of price changes.

EARS (Easy Approach to Requirements Syntax) is a formal notation for writing unambiguous, testable acceptance criteria.

Write PRDs with EARS requirements and acceptance criteria that are testable.

Translate user stories and informal requirements into precise, testable EARS format requirements.

EAS Update for OTA updates. Use when setting up over-the-air updates.

Expert in technical valuation approaches for easements including percentage of fee method, income capitalization, and before/after comparison. Use when valuing utility transmission easements, pipeline corridors, access easements, telecom sites, or when detailed methodology beyond basic percentage ranges is required. Key terms include easement valuation, percentage of fee, income capitalization, paired sales analysis, discount rate selection, agricultural rent analysis

Node.js platform functions for the East language. Use when writing East programs that need Console I/O, FileSystem operations, HTTP Fetch requests, Cryptography, Time operations, Path manipulation, Random number generation, or Testing. Triggers for: (1) Writing East programs with @elaraai/east-node-std, (2) Using platform functions like Console.log, FileSystem.readFile, Fetch.get, Crypto.uuid, Time.now, Path.join, Random.normal, (3) Testing East code with describeEast and Assert.

Generate verifier-safe packet parsing logic for eBPF programs including bounds checking, header extraction (Ethernet, IPv4/IPv6, TCP/UDP, ICMP), protocol identification, and proper pointer arithmetic. Use when implementing packet inspection or manipulation in CNFs.

Generate test infrastructure for eBPF CNF programs including network namespace setup, virtual interface creation, traffic generation, packet injection, and validation of packet processing logic. Use when implementing automated tests for CNFs.

Property-based testing and fuzzing using Echidna for smart contracts. Includes invariant definition, corpus management, coverage analysis, and CI/CD integration for comprehensive security testing.

Run and interact with eclair Lightning Network daemon in Docker. Use for Lightning development, testing payment channels on regtest, managing eclair containers, and calling eclair API endpoints (getinfo, connect, open/close channels, pay/receive).

Automates customer onboarding workflows for e-commerce platforms. Fetches recent WooCommerce orders, identifies first-time customers within a specified timeframe, syncs their information to a BigQuery CRM database, and sends personalized welcome emails using a template.

Fetch upcoming economic events and data releases using FMP API. Retrieve scheduled central bank decisions, employment reports, inflation data, GDP releases, and other market-moving economic indicators for specified date ranges (default: next 7 days). Output chronological markdown reports with impact assessment.

Analyzes Claude Code ecosystem health by tracking all 27 extensibility components across 6 tiers - including plugin components, core configuration, environment/CLI, authentication, session features, and integrations. Use when checking if Claude Code components are up-to-date, orchestrating audits efficiently, tracking documentation coverage, applying updates from new Claude Code versions, or getting an overview of ecosystem component staleness.

JavaScript ecosystem including npm, build tools (Webpack, Vite), testing (Jest, Vitest), linting, and CI/CD integration.

Amazon ECS API specification reference. Use when implementing ECS-compatible APIs in KECS to accurately reproduce request/response structures, parameters, error codes, and behaviors. Reference for implementing APIs like CreateCluster, CreateService, RunTask, RegisterTaskDefinition.

AWS CLI ECS command reference. Use when understanding how users interact with ECS via AWS CLI, including command syntax, options, examples, and output formats. Essential for KECS compatibility.

AWS Fargate serverless container compute for ECS. Covers Fargate vs EC2 decision guide, CPU/memory sizing, platform versions, Fargate Spot cost optimization, Graviton/ARM architecture, networking, and EFS integration. Use when deploying serverless containers, optimizing Fargate costs, sizing Fargate tasks, or choosing between Fargate and EC2 launch types.

Component research and procurement. Search JLC for components, analyze datasheets, compare options, and document selections with rationale.