checkmate

Validate runtime conditions in Java applications using a fluent API.

2|Updated Feb 18, 2026
One-click install
npx skills add https://github.com/tomitribe/claude-plugins --skill checkmate
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: checkmate
Source: https://github.com/tomitribe/claude-plugins/tree/main/plugins/checkmate/skills/checkmate
Command: npx skills add https://github.com/tomitribe/claude-plugins --skill checkmate

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Validate runtime conditions in Java applications using a fluent, expressive API.

Core Features & Use Cases

  • Fluent object checks with a builder-style API to compose multiple validations
  • Safe short-circuiting and lazy evaluation to avoid unnecessary work
  • Mapping, fallbacks, and or-throw patterns to robustly handle invalid states
  • Pluggable logging through custom CheckLogger for unified diagnostics
  • Use cases include configuration validation, deployment assertions, and CLI diagnostics

Quick Start

Create a Checks instance and define object checks to validate configuration, printing results.

Frequently Asked Questions about checkmate

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

FAQPage Schema
How do I validate runtime conditions in Java using a fluent API?▼

Runtime validation in Java uses a fluent API to apply configuration checks, deployment diagnostics, and CLI diagnostics, providing structured output and short-circuiting on failures to avoid unnecessary work.

What is the best way to handle invalid configuration states in Java applications?▼

Handling invalid configuration states in Java is best done using mapping, fallbacks, and or-throw patterns within a fluent validation API to safely robustly manage errors and short-circuit execution.

Does Java runtime validation support lazy evaluation to avoid unnecessary checks?▼

Java runtime validation supports safe short-circuiting and lazy evaluation, ensuring that unnecessary validation work is avoided when composing multiple object checks in a fluent builder-style API.

Can I customize logging for runtime validation checks in my Java app?▼

You can customize logging for runtime validation checks in Java by implementing a pluggable CheckLogger, providing unified diagnostics for configuration validation, deployment assertions, and CLI diagnostics.

When do I need runtime validation for deployment diagnostics in Java?▼

Runtime validation for deployment diagnostics in Java is needed when you must assert deployment conditions and validate configurations at startup, using structured output and short-circuiting to halt on failures.