GraphQL Query Validator
Inspect, validate, and convert GraphQL schemas and queries with GraphQL Query Validator.
About GraphQL Query Validator
GraphQL Query Validator is a 100% free, browser-native client-side utility in the API & Data Formats category. Inspect, validate, and convert GraphQL schemas and queries with GraphQL Query Validator.. Designed for rapid digital workflows, it allows users to process data, calculate results, or transform media locally in their browser with zero registration and zero server data transfers.
How to Use GraphQL Query Validator
Step 1
Open GraphQL Query Validator in your browser.
Step 2
Paste your API payload, cURL command, or specification schema.
Step 3
Select your target language or destination data format.
Step 4
Copy the converted code snippet or download the resulting schema file.
Practical Use Cases for GraphQL Query Validator
Frontend & Backend API Contract Alignment
Transform API payloads between JSON, GraphQL, OpenAPI, and TypeScript interfaces.
Automated Code Generation
Convert cURL requests into production-ready Axios, Fetch, Python, or Go code snippets.
Schema Validation & Linting
Catch missing required fields, type mismatches, and schema violations early.
Mock API Payload Crafting
Quickly assemble representative API mock structures for unit testing.
Input & Output Examples
Sample GraphQL Query Validator Execution
Sample input data for GraphQL Query Validator
Clean, formatted output processed by GraphQL Query Validator
Key Features & Performance
- ✓Bidirectional data format conversions with instant schema preview.
- ✓Multi-language code generators (JavaScript, TypeScript, Python, Go, Rust, PHP, cURL).
- ✓RFC-compliant validation with detailed line-by-line error messages.
- ✓100% in-browser parsing without external API proxies.
Key Terminology & Definitions
API Contract
A formal agreement between client and server defining request schemas, response formats, and error codes.
cURL
A command-line tool and library for transferring data using network protocols like HTTP and HTTPS.