assertly
plain-english tests an agent runs for you
assertly is end-to-end web testing without the brittle scripts. You write the test the way you'd describe it to a teammate, and an ai agent figures out how to drive the page as it exists right now — clicking, typing, navigating, and asserting — then runs it in a sandboxed headless browser.
Because each test stores intent rather than a pinned css selector, a class rename or a moved button doesn't turn your suite red. Save a test, re-run it in a click, and read the execution log plus the failure screenshot to see exactly what the agent saw.
“open the site, click learn more in the nav, and check it lands on the about page.”
how it works
- 01
describe it
Type the flow in plain english — the pages, the clicks, and what should be true at the end.
- 02
generate & run
assertly's agent translates your words into browser steps and runs them in a sandboxed headless browser.
- 03
read the result
Pass or fail, a step-by-step execution log, and a screenshot captured at the point of failure. Re-run any time.
a look inside
a few of the screens you'll actually use.
- tests written in plain english
- an ai agent drives the browser
- pass/fail, logs + failure screenshot
“open the site, click learn more in the nav, and check it lands on the about page.”
assertly guides
Ways to use assertly, and how it compares.
- use caseAI web testing for QA teams: write the test in English, let an agent run itAI web testing for QA teams: describe a flow in plain English and an agent runs it in a real browser, re-resolving intent each run so tests survive UI changes.
- how toHow to write natural-language E2E test scenarios an agent can run reliablyHow to write natural-language test scenarios: one user goal, concrete starting point, observable steps, and a checkable assertion an AI testing agent can verify.
- comparisonAgentic testing vs Selenium and static scripts: where each one winsAgentic testing vs Selenium: an AI agent resolves intent against the live page each run, while Selenium pins steps to selectors that break on UI changes. Side by side.
- use caseThe cost of manual E2E testing, and where an AI agent actually helpsManual E2E testing is slow, unrepeatable, and skipped under deadline. The real cost, why static automation only half-solves it, and how an AI testing agent helps.