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Steps shape the data, emit templates the leaves, ctx.log leaves notes.

pull it · bedit this chain · b
compare two inputs · crun it first
fit graph · f
no run yet

timeline

the waterfall fills in as the chain runs.

import a chain

paste a jevchain/v1 document (what toJSON() gives you). steps without handlers pass their input through.

api key

bring your own typesafe key, or ride the shared one (rate-limited, be nice).

shared key
checking…
your key
not set

your key stays in this browser (localStorage, jevchain.byok). it only travels to this site's /api/jev proxy in an x-typesafe-key header, which forwards it to typesafe and immediately forgets it. nothing is logged or stored server-side. requests on your own key get a much roomier rate limit.

keyboard shortcuts

fewer clicks, more chains. these work anywhere outside a text field.