Decipher

Decipher generates your E2E tests, maintains them as you ship, and catches issues before customers do. Plus, get alerted when users hit live bugs.

[Michael Rosenfield @_mrosenfield]

New in Decipher: agentically test recent changes.

Point it at your merged PRs. The agent writes test cases, explores the product, returns a QA report per PR.

One click turns any case into a self-healing E2E test.

[Michael Rosenfield @_mrosenfield]

So satisfying watching the Decipher agent automatically fix our E2E tests when our app changes.

At our shipping velocity, raw Playwright sounds painful, but deploying without tests sounds worse.

[Michael Rosenfield @_mrosenfield]

X really needs more E2E tests... @nikitabier @elonmusk we can help you

[Decipher @decipher_ai]

@satvik_seeram Make my life easier 🙏

[Michael Rosenfield @_mrosenfield]

@garrytan Once a feature looks good, we always have Claude make E2E regression tests to prevent future bugs.

npm i -g @decipher-sdk/decipher-qa
decipher-qa init
/decipher-qa make a few tests for this new feature

[Michael Rosenfield @_mrosenfield]

https://t.co/FkgQms17zc

[xhchen @xiaohuachen]

Already trying it — it's amazing!

[Decipher @decipher_ai]

@satvik_seeram @cramforce @tldraw 👀

[Michael Rosenfield @_mrosenfield]

For those asking me how it works:

[Michael Rosenfield @_mrosenfield]

Something big is coming to Claude

[Michael Rosenfield @_mrosenfield]

Soon, your job will be showing AI your product so it writes and maintains the tests for you.

You can do this today with @decipher_ai.

[Decipher @decipher_ai]

@jamesacowling If only you could show AI your product and it writes tests for you 👀

[Michael Rosenfield @_mrosenfield]

This chart is the entire story of engineering quality in 2026.

PRs shipped with AI are exponential. Tests written are still linear. The gap between those lines is where your bugs live. 10min to ship. 1hr to test.

Testing needs the same AI-native rethink that coding just got.

[Michael Rosenfield @_mrosenfield]

Only ~5% of users report bugs.
The other 95% grow resentment or churn.

Invest in automated tests + monitoring. Prioritize and fix faster.
If you’re tackling this, @decipher_ai might help.

[Michael Rosenfield @_mrosenfield]

https://t.co/lDWk8Ccc8R

[Michael Rosenfield @_mrosenfield]

Code output isn’t the bottleneck anymore.
The ability to validate correctness is.

Teams with tests will win. Teams without will lose.

[Michael Rosenfield @_mrosenfield]

Introducing Decipher AI: agentic QA for the era of coding agents.

Show it your product, and an agent generates E2E tests in minutes, maintains them for you, and catches bugs before customers do so. You keep shipping fast.

Plus, @decipher_ai will detect when live customers hit bugs and alert you.

[Michael Rosenfield @_mrosenfield]

Can confirm. We're building @decipher_ai to automate the testing part. @mintlify has the docs covered.

[Michael Rosenfield @_mrosenfield]

If you rely on coding agents, you need a validation layer

[Decipher @decipher_ai]

@_mrosenfield 🤖🦾