Privacy-first API client with full data control • Local with Git • Loved by 300K+ devs.
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Joined February 2016
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👇 API Load and Performance Testing: A Practical Guide
requestly.com/blog/api-load-…
How to Use Bearer Tokens for API Authentication 👇
requestly.com/blog/bearer-to…
Understanding 4xx Client Errors: Causes & Solutions 👇
requestly.com/blog/4xx-clien…
3xx HTTP Status Codes: Redirection Explained 👇
requestly.com/blog/3xx-http-…
Blocked by a CORS error again? 🛑 It’s just your browser actively blocking an API response.
Here is exactly why it happens and how to fix it the right way. 👇
requestly.com/blog/how-to-fi…
Proper localization is a legal and business requirement.
But testing all those localized features can become a tedious process if you don’t have the right tools.
That’s where we step in 👇
requestly.com/blog/using-req…
API tests are most useful when they run automatically—on every push, pull request, and deploy.
The challenge is doing that without turning your pipeline into a 30‑minute slog.
We’ve broken down a simple way to wire this up (with examples) here:
👉 requestly.com/blog/api-testi…
ALT Requestly by BrowserStack graphic: “Wire API tests into your pipeline without slowing your team down,” beside a bear mascot with a laptop.
⌛ API proxy settings in one minute:
If you’re on a corporate network, your API client usually talks to the internet via a proxy, not directly.
Wrong proxy settings means timeouts and “cannot connect” even when the API is fine.
We’ve broken down what a forward proxy is and how to configure proxy settings for API requests here:
👉 requestly.com/blog/api-proxy…
Changing your IP address for testing (without touching your router) 👇
As a developer, you often just need to spoof the IP your app sees.
We’ve documented the exact steps (and caveats) in a short guide here: requestly.com/blog/how-to-ch…
Share API collections with your team so everyone tests against the same source of truth.
👉 Learn how: requestly.com/blog/share-api…
API throttling ≠ rate limiting.
Rate limits define how much traffic is allowed,
Throttling defines how fast that traffic is processed.
Knowing the difference helps you build APIs that stay reliable under load.
We broke down the difference, use cases, and examples in more detail here: requestly.com/blog/api-throt…
A lot of API testing advice jumps straight to “advanced frameworks” and “enterprise tooling.”
But most real‑world workflows still boil down to four simple steps:
1️⃣ Send
Pick the method, set the URL, headers, and body, then fire the request.
- You’re answering: “Did the API respond?"
2️⃣ Inspect
Look at status, headers, response time, and body.
- You’re answering: “Did it behave the way I expected?
3️⃣ Assert
Turn expectations into repeatable checks: status codes, JSON fields, schemas, headers.
- You’re answering: “Will I notice instantly if this breaks next time?”
4️⃣ Automate
Run these tests over collections or data files, and hook them into CI so they run on every change.
- You’re answering: “Can I trust this API as the system evolves?”
We broke these steps down with examples and tips in a full guide here 👉 requestly.com/blog/how-to-te…
ALT Infographic: “Test an API in 4 Steps” by Requestly—1 Send, 2 Inspect, 3 Assert, 4 Automate—with a mascot on the right.
People often ask “should I use OAuth or JWT?”
But that’s not really the decision you’re making.
You’re mixing up two different layers:
- OAuth 2.0 – a framework for delegating access: how an app gets permission to act on a user’s behalf (redirects, consent screen, scopes, token endpoint)
- JWT (JSON Web Token) – a token format: how claims are encoded into a compact, signed string that an API can verify
You can quite literally use both at once: OAuth can issue a JWT access token, which your APIs then validate and trust.
So the more useful questions are:
“Do I need delegated access and scopes?” → that’s an OAuth‑style question.
“How should my tokens look and be verified?” → that’s a JWT‑style question.
Framing it this way avoids fake either/or debates and helps you design the right auth layer for your API instead of arguing about acronyms
If you want a deeper dive into OAuth vs JWT, we broke it down here: requestly.com/blog/oauth-vs-…
