OpenAPI 3 Client Extension

A powerful Chrome extension for testing OpenAPI 3.x APIs with advanced features including schema-driven request building, jq filtering, and
automatic CORS bypass.

CORE FEATURES

OpenAPI 3.x Support
- Parse and validate JSON/YAML specifications
- Advanced reference resolution with circular reference protection
- Real-time specification validation

Professional Request Builder
- Dual-mode interface: Form-based and raw JSON editing
- Schema-driven form generation from OpenAPI specs
- Support for all data types and nested structures
- Bidirectional synchronization between modes

Advanced Response Processing
- Built-in jq filtering for JSON querying
- Multiple view modes: Tree, Raw JSON, Filtered results
- Real-time query processing
- One-click copying of results

Smart Request Management
- Auto-save/load request configurations per endpoint
- Comprehensive history with search and replay
- Environment management (dev, staging, production)
- Custom URL and query parameter support

KEY BENEFITS

Bypass CORS Restrictions
Unlike web-based API clients, this extension uses Chrome permissions to bypass CORS limitations, allowing you to test any API without server
configuration changes.

Browser Integration
- No separate application required
- Access from any tab
- Automatic cookie forwarding
- Seamless workflow integration

Enhanced Productivity
- Auto-save configurations for quick re-testing
- Request history with search capabilities
- Environment switching without reconfiguration
- Form-based building reduces errors

IDEAL FOR

API Developers: Test endpoints during development and validate specifications
QA Engineers: Comprehensive testing workflows and regression testing
Frontend Developers: Backend API exploration and authentication testing
DevOps Teams: API monitoring and environment validation

OPEN SOURCE & CONTRIBUTIONS
GitHub Repository: https://github.com/marimelon/oapi3-client-ext

Report bugs and issues
Request new features
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View source code and documentation