Karol / profrontend @profrontend_com

Before AI, I used to be a frontend developer – now I'm a Product Engineer. Creator of apifighter – visual REST API workflow runner for QA & devs. Joined January 2026

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Karol / profrontend @profrontend_com

13 hours ago

@builtwithrubel Hi, currently I'm building apifighter.com api testing tool with no-coding required multi-steps test flows and built-in MCP for agents, 100% local. Let's connect.

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Karol / profrontend @profrontend_com

13 hours ago

@oopserian Hi Erian, currently I'm building apifighter.com api testing tool with easy multi-steps test flows and built-in MCP for agents, 100% local. Let's connect.

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Karol / profrontend @profrontend_com

13 hours ago

@MaximLevoshin Hi, currently I'm building apifighter.com api testing tool with easy multi-steps test flows and built-in MCP for agents, 100% local. Let's connect.

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Karol / profrontend @profrontend_com

a day ago

Built for QA engineers & fullstack devs who test multi-step workflows. Try the free Community Beta: apifighter.com Or get it on Microsoft Store: apps.microsoft.com/detail/9pf96bf…

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Karol / profrontend @profrontend_com

a day ago

With apifighter you can test complex multi-user API flows in 1 click without swapping tokens or writing JS scripts. Or let your Claude, Codex, or Antigravity agent build & run them for you via the built-in MCP Server. No cloud. 100% local. #APITesting #SoftwareTesting

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Karol / profrontend @profrontend_com

3 days ago

The local MCP update lands in the next release, but you can already grab the current free Beta (macOS & Windows): 🌐 apifighter.com 🪟 Microsoft Store: apps.microsoft.com/detail/9pf96bf…

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Karol / profrontend @profrontend_com

3 days ago

Sneak peek of what's next in apifighter: a built-in, 100% local MCP server Connect Claude, Cursor, or Antigravity and watch it: - Import OpenAPI - Run single endpoints as any user - Create & run users + multi-step flows Unlike Postman's cloud MCP, nothing leaves your machine.

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Karol / profrontend @profrontend_com

5 days ago

try the free beta: Website: apifighter.com Microsoft Store: apps.microsoft.com/detail/9pf96bf… Honest feedback from QA & devs very welcome!

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Karol / profrontend @profrontend_com

5 days ago

My wife is a QA engineer. Watching her manually re-run the same API requests as different users after every dev fix drove me crazy. So I built apifighter: - openapi.json imports - Visual REST API flows & variants - Switch User A / B per step - 1-click Jira reports - 100% local

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