The verification layer
for your software factory.

Black-box tests for your web apps, written and maintained as code by AI agents, and run on infra that lets you ship fast.

peek at our own test repo

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Trusted by fast growing teams

01 · Black box

Tests that only see what users see

Our tests don't know or care about your source code. They drive a real browser against your app — click, type, and check what's on the screen — so they stay put when the code underneath changes. Migrating to Rust 🦀? Your tests don't know, and don't change.

No hooks, mocks, or test-only backdoors in your app
Refactors and rewrites don't break the suite
Any stack, any framework, any language

Your app · rewrite to Rust 🦀

api/checkout.ts −412
api/checkout.rs +388
db/orders.ts −156
db/orders.rs +171

148 files changed

Your tests · 0 files changed

await page.getByRole("button", { name: "Pay now" }).click();
await expect(page.getByText("Order confirmed")).toBeVisible();

✓ 212 passed · before and after

02 · Infra

Fast infra for browser tests

Playwright on CI splits tests by file order, so one slow shard holds up the whole run. We schedule every test from its duration history, longest first, so shards finish together.

Duration-aware sharding, retries, and parallel workers
No CI config or runners to maintain
Video, trace, and logs for every test

Playwright + CI · file order 21 min

Empirical · longest first 17 min

Same 16 tests · 4 shards · illustrative durations

03 · Agent

A suite that maintains itself

When your app changes, the agent figures out whether a failure is a bug, a flake, or a test that drifted — then fixes the test or tells you about the bug, in Slack, with evidence.

Writes new tests from a prompt, a PR, or a ticket
Triages every failure and repairs drifted tests
Every change lands as a PR, reviewed by an engineer

09:12 Deploy checkout v2.4 shipped to staging
09:31 Run 3 failures in checkout/
09:33 Agent Triaged — 2 tests drifted (button renamed), 1 real regression
09:34 Agent Posted to #releases: coupon field rejects valid codes Slack
09:41 Agent Opened PR #1260 — updated 2 tests, re-ran green
09:58 Engineer Reviewed and merged

04 · Composability

Primitives you can build on

Everything in the dashboard is a primitive with an API and a CLI. Trigger runs from your pipeline, hand work to the agent from your own coding agent, and pull results wherever you need them.

CLI and API for every action in the product
Agent skill for Claude Code, Codex, and friends
Results in GitHub checks, Slack, and your tracker

$ empirical session -x "add a test for coupon codes at checkout"
✓ PR #1262 opened · 1 test added · run passed

$ empirical api api/test-runs/4821/status
{ "status": "failed", "passed": 211, "failed": 1 }