RateLimitLab: API Rate Limit Behavior Simulator

How it helps

Use it for a focused task

RateLimitLab lets you configure a rate limit policy, fire requests at different speeds, and watch what gets through and what gets rejected in real time. It models three common algorithms: token bucket, fixed window, and sliding window.

You can adjust the window size, max tokens, and request rate, then see the results on a timeline chart. Pick a limiter type.

Set the window size and max tokens. Choose a request pattern (steady, burst, spike, or custom).

Good next steps

Make the result easier to act on

• Start with the examples or presets if you are unsure what to enter for RateLimitLab: API Rate Limit Behavior Simulator.
• Try one realistic scenario first, then adjust the numbers or notes to compare another path.
• Use save or share from the project footer when you want to return to the same helper later.
• Open a related project below when the result points to a timing, budget, writing, planning, or comparison task.