ByteJSON

API Tools

API development and testing utilities

Popular Tools

HTTP Status Codes

Popular

Reference all HTTP codes

Google Services JSON

Popular

Generate & validate google-services.json

New Tools

HTTP Status Codes

New

Reference all HTTP codes

Google Services JSON

New

Generate & validate google-services.json

User Agent Parser

New

Parse UA strings

MIME Type Lookup

New

Find MIME types

API Key Generator

New

Generate secure keys

GraphQL Builder

New

Build GraphQL queries

JSON to OpenAPI

New

Generate OpenAPI 3.0 specs from JSON

All API Tools

HTTP Status Codes

Reference all HTTP codes

Google Services JSON

Generate & validate google-services.json

User Agent Parser

Parse UA strings

MIME Type Lookup

Find MIME types

API Key Generator

Generate secure keys

GraphQL Builder

Build GraphQL queries

JSON to OpenAPI

Generate OpenAPI 3.0 specs from JSON

Essential API Development Tools

Building and debugging APIs requires specialized knowledge: understanding HTTP status codes, generating secure authentication keys, constructing GraphQL queries, and parsing user agent strings. Our API tools collection provides instant access to this information and generates production-ready outputs for your projects.

These tools help both API providers and consumers. Providers can quickly generate secure keys and understand client requests through user agent analysis. Consumers can debug responses with HTTP status references and construct proper GraphQL queries without syntax errors.

Why Use ByteJSON API Tools?

  • Secure Key GenerationGenerate cryptographically secure API keys in your browser. Choose length, format, and entropy. Keys are never logged or stored.
  • Complete HTTP ReferenceAll HTTP status codes with official descriptions. Quickly understand error responses during API debugging without searching documentation.
  • GraphQL Query BuildingConstruct complex GraphQL queries visually. Add fields, nested selections, and arguments without syntax errors. Copy ready-to-use queries.

Common Use Cases

API Debugging

Quickly understand 404, 500, and other error codes. Reference status meanings during integration debugging without leaving your browser.

Authentication Setup

Generate API keys for testing and development. Create secure tokens for OAuth flows, JWT signing, or simple key-based auth.

GraphQL Development

Build queries for GraphQL APIs without memorizing schema. Visual builder helps construct proper field selections and arguments.

Analytics & Logging

Parse user agent strings from logs to understand client browsers and devices. Identify mobile vs desktop users, browser versions.