baseline-status

Verifies web platform feature Browser Baseline statuses and outputs JSON for frontend workflows.

926|71|Updated Jan 27, 2026
One-click install
npx skills add https://github.com/GoogleChrome/modern-web-guidance-src --skill baseline-status
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: baseline-status
Source: https://github.com/GoogleChrome/modern-web-guidance-src/tree/main/.agents/skills/web-baseline
Command: npx skills add https://github.com/GoogleChrome/modern-web-guidance-src --skill baseline-status

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Developers often face uncertainty about whether a web feature is safe to use in production, leading to broken experiences for users on unsupported browsers or unnecessary bloat from redundant polyfills and fallback code.

Core Features & Use Cases

  • Baseline Status Lookup: Quickly check if a web feature is classified as Widely supported, Newly supported, or Limited across all major browsers.
  • Structured Output Support: Retrieve compatibility data in JSON format for easy integration into development workflows, build tools, and documentation.
  • Use Case: When building a new responsive layout, use this Skill to confirm the Baseline status of CSS container queries before adopting it as a core styling solution, ensuring compatibility with your target user base.

Quick Start

Ask your AI agent to check the Baseline status of the Web Animations API to confirm if it is safe to use for your new interactive component.

Frequently Asked Questions about baseline-status

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

FAQPage Schema
How do I check browser support for web platform features before using them in production?

To check browser support for web platform features, verify their Baseline status to see if they are Widely supported, Newly supported, or Limited across major browsers. This eliminates compatibility uncertainty and prevents broken user experiences.

Can I get web feature compatibility data in JSON format for automated tooling?

Yes, you can retrieve web feature compatibility data in structured JSON format. This allows easy integration of Baseline status classifications into your development workflows, build tools, and automated documentation pipelines.

What is Baseline status and how does it help with polyfill planning?

Baseline status classifies web platform features as Widely supported, Newly supported, or Limited across major browsers. It helps with polyfill planning by confirming exactly which features require fallback code, preventing unnecessary polyfill bloat.

Does this work for checking CSS properties and JavaScript APIs cross-browser?

Yes, this works for cross-browser validation of CSS properties, JavaScript functionality, and web APIs. It delivers human-readable status classifications to confirm if specific features are safe to adopt for your target user base.

When do I need to verify feature compatibility for frontend development?

You need to verify feature compatibility for frontend development during feature selection, polyfill planning, and cross-browser validation. Checking Baseline status ensures your chosen web APIs and CSS properties work across your target browsers.

What's the best way to confirm if CSS container queries are safe to use?

The best way to confirm if CSS container queries are safe to use is to check their Baseline status. This verifies whether the feature is Widely supported, Newly supported, or Limited across all major browsers before adoption.