Observed arrival · 2026-10-21
forked puts AI-agent state on branches—and makes retries safer
An open-source tool for forking, rewinding, and replaying AI-agent state while recording external effects such as payments and emails.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Developers building retryable AI-agent workflows
- Worth noticing
- The page claims a thousand branches take about 1.4 ms with zero state bytes copied; this is a stated performance claim.
Field notes
The example records results for payment, flight booking, and email effects, then shows a retry reusing those results while a later loyalty-credit effect executes. The page says effects are stored by idempotency key inside commits and that rewinds do not undo an effect. It also presents self-hosted and cloud deployments as using the same API, with a baseUrl change distinguishing them.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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