Performance testing
See where a request spends its time.
Every API request in Testnir comes back with a timing breakdown, so you can tell a slow DNS lookup from a slow server, test latency, and run repeatable benchmarks.
Timing breakdown
Each response shows its phases, from connection setup to the first byte and the full download.
Latency injection
Add delay to chosen routes with API Inspector to test timeouts and loading states.
Repeatable runs
Run a collection with iterations or on a schedule and compare results across runs.
Available today
- Per-request timing phases and response sizes
- Latency and failure injection on intercepted routes
- Scheduled collection runs with reports
In the product
The tools behind this page.
Each of these is available in Testnir today.
- API TesterSend HTTP requests through a secure proxy, organize them into collections & environments, assert on responses, run whole collections as test suites with reports, and let AI write and explain your tests.
- API InspectorIntercept requests and rewrite them on the fly: mock endpoints that do not exist yet, redirect a route to staging or localhost, inject or strip headers, and inject latency and failures to test how your app copes.
See whether Testnir fits your team.
Book a demo of the platform, discuss a testing project, or both. We will reply by email to plan the conversation.