Question 1

Is this a Postman replacement?

Accepted Answer

No, but it's good for quick tests. Works in browser, no install needed. Code generation is excellent. BUT: browsers have CORS restrictions that Postman doesn't. If an API blocks browser requests, use the cURL export in terminal. Postman is still better for: collections, complex workflows, team collaboration, APIs without CORS.

Question 2

Why do I only see OPTIONS in my webhook logs, not POST?

Accepted Answer

Browsers send OPTIONS preflight before POST/PUT/PATCH with JSON. If you only see OPTIONS and not your actual POST, the API blocked CORS. This is a browser security feature we can't bypass. Solution: use the cURL command from Code tab in your terminal. Terminal requests don't have CORS restrictions.

Question 3

What APIs can I test with this tool?

Accepted Answer

Works great for: localhost APIs, APIs with CORS enabled (most modern APIs like Stripe, GitHub, etc.), same-origin requests. Won't work for: APIs without CORS headers (you'll see CORS error or only OPTIONS requests). For blocked APIs, copy the cURL command and run it in terminal.

Question 4

How do I bypass CORS errors?

Accepted Answer

You can't bypass CORS from browser JavaScript — it's a security feature. Workarounds: 1) Use the cURL command from Code tab (no CORS in terminal). 2) Prefix URL with https://cors-anywhere.com/ for testing. 3) Ask the API owner to add CORS headers. 4) Use Postman desktop app instead.

Question 5

What request types are supported?

Accepted Answer

All HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS. Body types: None, JSON, Form Data, URL-encoded, Raw text. Auth: Bearer Token, Basic Auth, API Key.

Question 6

What's the environment variables feature?

Accepted Answer

Define variables like {{baseUrl}} or {{apiKey}}. Use them in URL, headers, body. Saves typing and switching between dev/staging/prod environments.

Question 7

How do I generate code from my request?

Accepted Answer

Code tab shows your request in cURL, fetch, axios, Python requests, and PHP cURL. Updates in real-time as you build your request. Copy-paste ready.

Question 8

Is my data secure?

Accepted Answer

Everything runs in your browser. Requests go directly to the API you're testing, not through our servers. History saved in localStorage only. But don't use production API keys in browser tools — use test keys.

API Tester

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