yup

Validate JavaScript/TypeScript data using Yup schemas for runtime integrity.

7|Updated Jan 29, 2026

Search Tags:#typescript #validation #schema #data #form #validate #yup

Ready to run

npx skills add https://github.com/joabgonzalez/ai-agents-skills --skill yup

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: yup
Source: https://github.com/joabgonzalez/ai-agents-skills/tree/main/skills/yup
Command: npx skills add https://github.com/joabgonzalez/ai-agents-skills --skill yup

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Schema-based validation for JavaScript and TypeScript objects, ensuring data integrity across applications.

Core Features & Use Cases

Schema creation: Define typed, reusable validation schemas for objects, arrays, and form data.
Type inference: Use TypeScript to derive static types from schemas for safer code.
Integration: Works with popular form libraries like Formik and runtime validation flows.

Quick Start

Install the Yup skill and begin integrating schema validation into your JavaScript/TypeScript projects.

Frequently Asked Questions about yup

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

FAQPage Schema

How do I validate form data in TypeScript using schema-based validation?▼

Yup schema validation in TypeScript ensures runtime data integrity for form inputs. You define reusable typed schemas for objects and arrays to verify data before processing.

Can I derive TypeScript types from Yup validation schemas?▼

Yes, Yup schemas support type inference, allowing TypeScript to derive static types directly from validation schemas. This ensures static code matches runtime validation rules.

Does Yup schema validation work with Formik for web applications?▼

Yup schema validation integrates with Formik in web applications. This combination handles runtime validation flows and data normalization within the form management workflow.

What is the best way to validate API input in JavaScript applications?▼

Validating API input in JavaScript is best handled using Yup schemas to ensure runtime data integrity. Applying schema-based validation to incoming requests enables robust data normalization.

Do I need specific Yup library versions for TypeScript compatibility?▼

Yes, TypeScript compatibility requires Yup library version 1.0.0 or higher but below 2.0.0. This version constraint ensures proper type derivation and validation error handling.