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jsonlogic-validator

Validate and test JSONLogic rules against sample data across languages.

1|Updated Jan 20, 2026
Search Tags:#testing#validation#javascript#rules#rule-engine#jsonlogic
One-click install
npx skills add https://github.com/yonderlab/kota.agent.skills --skill jsonlogic-validator
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: jsonlogic-validator
Source: https://github.com/yonderlab/kota.agent.skills/tree/main/skills/jsonlogic-validator
Command: npx skills add https://github.com/yonderlab/kota.agent.skills --skill jsonlogic-validator

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires json-logic-js, and includes scripts (resource) and references (resource) components.

What problem does it solve?

JSONLogic provides a portable, JSON-based rule engine that you can run across languages without eval, enabling consistent business logic decisioning and validation in your apps. It reduces boilerplate and method coupling by standardizing rules as data.

Core Features & Use Cases

  • Validate and parse JSONLogic rules to ensure syntax and operator usage correctness.
  • Run test cases against data to verify expected outcomes for rules.
  • Reference implementations and examples to integrate JSONLogic rules into both client and server sides.

Quick Start

Validate a JSONLogic rule and test it against sample data using the provided scripts.

Frequently Asked Questions about jsonlogic-validator

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

FAQPage Schema
How do I validate JSONLogic rules for correct syntax and operator usage?▼

You can validate JSONLogic rules by parsing them against a strict operator set to ensure syntax and operator usage correctness. This process checks the rule structure to prevent runtime errors before applying rules to your application logic.

Can I test JSONLogic rules against sample data to verify expected outcomes?▼

Yes, you can run test cases against sample data to verify expected outcomes for JSONLogic rules. Provided script-based utilities execute and evaluate the rules, allowing data-driven testing across your client and server environments.

What is JSONLogic used for in cross-language application development?▼

JSONLogic is a portable, JSON-based rule engine used to run consistent business logic decisioning across languages without eval. It standardizes rules as data, reducing boilerplate and method coupling in JavaScript, Python, Ruby, and Go applications.

Does the json-logic-js dependency work across multiple programming languages?▼

The json-logic-js dependency powers the core validation and testing logic, conforming to a strict operator set. While the library is JavaScript-based, the portable JSON rule format itself supports integration across JavaScript, Python, Ruby, and Go environments.

What is the best way to integrate JSONLogic rules into both client and server sides?▼

The best way to integrate JSONLogic rules is by using reference implementations and examples to apply the standardized JSON data format. This enables consistent rule execution and data-driven validation across both client and server components.

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