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Lastest — Visual Regression Testing Agent

Run Playwright visual regression tests and classify screenshot diffs with AI.

12|1|Updated Apr 6, 2026
Search Tags:#playwright#visual regression#mcp server#ui quality#self-healing tests#ai test generation#diff approval
One-click install
npx skills add https://github.com/las-team/lastest --skill lastest-visual-regression-testing-agent
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Lastest — Visual Regression Testing Agent
Source: https://github.com/las-team/lastest/tree/main
Command: npx skills add https://github.com/las-team/lastest --skill lastest-visual-regression-testing-agent

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Lastest helps you detect and manage UI regressions by recording browser flows, generating resilient visual tests, running them, and classifying screenshot diffs so you can approve or auto-fix breakages faster.

Core Features & Use Cases

  • Trigger test builds & track status: Use MCP tools to start runs and poll build progress until results (including pass/fail and diff outcomes) are ready.
  • Diagnose visual changes with AI classification: Inspect visual diffs with AI summaries (e.g., insignificant/noise vs meaningful changes) and decide whether to approve baselines or reject them.
  • Create and heal tests automatically: Generate new tests from a URL/prompt and auto-fix failing tests via an AI healer when the UI changes.
  • Coverage visibility: Retrieve coverage by functional area and route to identify what’s already tested versus missing.

Quick Start

Start by installing and connecting the MCP server using the command provided in the skill instructions, then call lastest_run_tests to create a build and follow with lastest_get_build_status until diffs are available.

Frequently Asked Questions about Lastest — Visual Regression Testing Agent

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate visual regression testing for Playwright builds?▼

Automate visual regression testing by triggering Playwright builds via MCP tools, polling build status, and retrieving screenshot diffs to diagnose UI regressions in branches and pull requests.

Can AI self-heal failing Playwright tests when the UI changes?▼

Yes, AI-assisted healing automatically fixes failing Playwright tests when UI changes occur, while AI classification summarizes visual diffs to help you decide whether to approve or reject baselines.

How do I generate new Playwright visual tests from a URL?▼

Generate new visual tests by providing a target URL and prompt, which creates AI-generated Playwright test builds that run and produce screenshot diffs for baseline tracking.

What is the best way to triage screenshot diffs in visual regression testing?▼

Triage screenshot diffs using AI classification that distinguishes insignificant noise from meaningful visual changes, enabling faster baseline approval or rejection decisions through MCP tool integration.

Does visual regression testing work for tracking UI coverage by route?▼

Yes, visual regression testing tracks coverage by functional area and route, retrieving metrics to identify which UI paths are already tested versus missing from your test suite.

How do I start a visual regression test run using MCP server tools?▼

Start by connecting the MCP server, then call the run tests tool to create a build and poll build status until visual diffs and pass/fail outcomes are available for review.

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