Overview#
ProbeCore is a professional-grade API testing platform accessible directly via the browser. Designed to eliminate traditional barriers such as registration, installation, or usage limits, ProbeCore offers a streamlined and fully featured environment for REST API testing. It is entirely free to use, supports all HTTP methods, and prioritizes privacy by keeping data local.Getting Started#
Visit the ProbeCore API testing interface via the browser. Begin creating and sending requests without registration or setup. All functionalities are accessible immediately and operate fully within the browser environment.Key Capabilities#
Comprehensive HTTP Method Support#
ProbeCore supports all standard HTTP methods:POST: Create new resources
PUT: Replace existing resources
PATCH: Modify resources partially
OPTIONS: Identify supported methods
HEAD: Retrieve headers without body content
Tabbed Request Interface#
Multiple request tabs allow concurrent testing workflows without losing progress. This structure supports productivity and ease of comparison between requests.Request History#
Requests are stored locally within the browser, enabling retrieval, review, and reuse of past interactions without cloud dependencies.Collection Management#
Export collections in standard JSON format for backup or version control.
Import collections from other tools.
Easily share API scenarios with team members or collaborators.
Authorization Support#
ProbeCore supports the following authorization mechanisms:Custom-defined authorization headers
Query Parameter Management#
Add, remove, and manage key-value pairs
Enable or disable parameters per request
Advanced Response Rendering#
JSON responses are presented using structured formatting and syntax highlighting, improving readability and debugging efficiency.Protocol-Level Controls#
Advanced settings per request include:HTTP version selection (1.1 or 2.0)
SSL certificate verification toggle
Automatic redirect handling
Redirect method and header retention
Cookie storage management
Cipher suite configuration
Protocol enablement/disabling (e.g., TLS versions)
No Account Requirement#
No user registration is necessary. All features are accessible instantly without submitting personal data.Pricing#
Free Forever#
There are no usage tiers or hidden costs. The full feature set is available at no charge, including:Advanced authorization types
Query parameter management
About ProbeCore#
ProbeCore was developed to provide developers—regardless of budget or experience—with unrestricted access to high-quality API testing tools. The platform is built for performance, privacy, and usability, removing unnecessary friction from the development process.Mission Statement#
To make API testing accessible, efficient, and privacy-respecting for all developers, without imposing costs or registration barriers.Core Values#
Free Access: All features available with no subscription required.
Privacy First: No data is transmitted to external servers; everything remains local.
Developer-Centric: Designed by developers to meet actual API testing needs.
High Performance: Optimized for responsiveness and speed within browser constraints.
API Tester Example:#
Without Request Body#
Visit ProbeCore: https://probecore.ricardoneud.com
With Request Body#
Visit ProbeCore: https://probecore.ricardoneud.com
Feature Comparison Table#
Currently ProbeCore is quite new and is not as comprehensive as Postman
ULD = Unlimited (Self-Hosted only)
| Feature | ProbeCore | Postman |
|---|
| No account required | ✅ | ❌ |
| Unlimited API requests | ✅ | Limited in free tier |
| All HTTP methods supported | ✅ | ✅ |
| Multiple tab support | ✅ | ✅ |
| Request history (local) | ✅ | ✅ |
| Collection export/import | ✅ | ✅ |
| JSON syntax highlighting | ✅ | ✅ |
| Advanced SSL and HTTP controls | ✅ | ✅ |
| Bearer, Basic, API Key auth | ✅ | ✅ |
| Custom authorization headers | ✅ | ❌ |
| Query parameter management | ✅ | ✅ |
| Dark/light theme support | ✅ | ✅ |
| Real-time in-browser execution | ✅ | ✅ |
| Rate limits | None | Yes (in free tier) |
| Pricing | Free | Free tier available, Paid tiers for advanced features |
| API Client Support (HTTP) | ✅ | ✅ |
| Custom headers support | ✅ | ✅ |
| SSL certificate verification | ✅ | ✅ |
| (Windows/Mac/Linux) App | ❌ | ✅ |
| Self Hosted | ✅ | ❌ |
