
Description
Haystack automatically learns real customer journeys from production traffic, figures out which ones a code change could affect, and replays them in isolated copies of production to catch regressions before they ship. When something breaks, Haystack shows exactly what changed across the UI, network calls, and events, then gives the failure back to your coding agent to fix and rerun.…
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Haystack FAQ
What is Haystack?
Haystack automatically learns real customer journeys from production traffic, figures out which ones a code change could affect, and replays them in isolated copies of production to catch regressions before they ship. When something breaks, Haystack shows exactly what changed across the UI, network calls, and events, then gives the failure back to your coding agent to fix and rerun.
Do I need to download Haystack?
No. Haystack runs in your browser at haystack.sh, so there's nothing to install.
Who makes Haystack?
Haystack is made by Haystack.
What are the best Haystack alternatives?
Popular alternatives to Haystack include CodeViz, Coval and Party. See all Haystack alternatives






















