RePost - API Tester, developed by RePost, is a Chrome extension that puts API development and testing inside the browser. It runs a local execution environment to build, execute, and measure requests while supporting hierarchical collections, cURL and OpenAPI imports, and Postman-compatible scripting. The launch target is web developers, backend engineers, and QA professionals who want a browser-integrated alternative to desktop REST clients with direct visibility into network activity.

How does RePost run tests without external services?

RePost uses a local execution environment that executes requests inside the browser rather than routing core testing through cloud back ends. That design supports automated execution metrics for requests and responses, so developers can gather timing and success data during runs. The local model reduces dependence on remote infrastructure and keeps test execution close to the browser session, an advantage for debugging endpoints during development cycles.

How visible is network traffic and responses?

Network interception and monitoring are built into the extension, giving real-time visibility into outgoing requests and incoming replies. Response analysis includes searchable JSON trees and rich media previews to inspect payloads and binary results. Those inspection tools make it practical to compare headers, bodies, and timing without switching to a separate packet sniffer, improving the loop between triggering a request and diagnosing its result.

Does RePost limit script execution for safety and session accuracy?

The tool runs test scripts in a sandboxed environment to isolate execution from the main browser context, and it synchronizes cookies automatically with the browser to preserve session state during authenticated calls. Sandboxed scripting helps contain side effects while cookie sync preserves the authentication and session variables developers rely on for end-to-end checks, reducing manual session setup.

What platforms and UI options fit team workflows?

RePost installs as an extension for Chrome and other Chromium-based browsers, so it integrates with desktop browser workflows rather than appearing as a separate application. The interface can be customized and localized, which supports teams working in different languages. Compatibility with standard API formats and in-browser operation makes it an option for developers who prefer to keep API tooling inside their primary browser environment.

RePost suits developers who prefer in-browser API tooling with measurable trade-offs

RePost is a practical option for developers and QA professionals who want measurable, browser-integrated testing tied to the active session and developer tools. It trades the standalone desktop client model for an in-browser workflow, so teams that require an external application for heavy offline runs may find that limiting. Tip: enable the localized interface when onboarding teammates to reduce setup friction across languages.