skills.rest
willyu1007
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validate-backend-inputs

Validate backend HTTP request inputs against defined schemas.

Updated Dec 22, 2025
Search Tags:#api#error handling#validation#backend#schema#http
One-click install
npx skills add https://github.com/willyu1007/Template-Skill-Basic --skill validate-backend-inputs
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: validate-backend-inputs
Source: https://github.com/willyu1007/Template-Skill-Basic/tree/main/.claude/skills/backend/validation/validate-backend-inputs
Command: npx skills add https://github.com/willyu1007/Template-Skill-Basic --skill validate-backend-inputs

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the critical need for robust input validation in backend HTTP APIs, preventing malformed requests from causing errors or security vulnerabilities.

Core Features & Use Cases

  • Schema Validation: Validates request parameters, query strings, and request bodies against predefined schemas.
  • Consistent Error Responses: Returns standardized 4xx HTTP error codes for all invalid requests, simplifying client-side error handling.
  • Use Case: An e-commerce API endpoint expects a product ID in the URL parameters and a quantity in the request body. This Skill ensures that the product ID is a valid integer and the quantity is a positive number, returning a 400 Bad Request if either condition is not met.

Quick Start

Validate the incoming request parameters and body against the defined API schemas.

Frequently Asked Questions about validate-backend-inputs

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

FAQPage Schema
How do I validate backend API request body and query strings?▼

To validate backend API request body and query strings, you validate incoming HTTP requests against predefined schemas. This ensures parameters and body content match expected types, returning 4xx errors for invalid data.

What is the best way to return consistent 4xx error responses for invalid API requests?▼

Returning consistent 4xx error responses for invalid API requests is achieved by validating inputs against a defined schema. When request parameters or bodies fail validation, a standardized 400 Bad Request is returned.

Can I use dynamic schema loading for backend input validation?▼

Yes, you can use dynamic schema loading for backend input validation. The Skill supports loading schemas dynamically and applying custom validation rules, allowing flexible integration across various API endpoints.

Why do I need schema validation for my HTTP API parameters?▼

You need schema validation for HTTP API parameters to prevent malformed requests from causing downstream errors or security vulnerabilities. It ensures API robustness by rejecting invalid inputs before processing.

Does this input validation Skill work with custom validation rules?▼

Yes, this input validation Skill works with custom validation rules. It allows you to define and apply custom logic alongside dynamic schema loading to validate request bodies and query strings effectively.

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