Everything between
commit and customer.
Flags, rollouts, guardrails, agent traces and experiments — one runtime, one audit trail, one SDK.
Nine controls, one runtime.
Feature flags
Turn code paths on and off at runtime, per user, per region, per plan.
Learn moreProgressive rollouts
Move from 1% to 100% on a schedule, with a guardrail at every step.
Learn moreAuto-rollback
Rules that dial a change to 0% when a metric crosses a line.
Learn moreAgent traces
Every plan, tool call and response as a searchable span.
Learn moreJudges
Score live agent output for accuracy, tone, safety and cost.
Learn moreApproval gates
Risky agent actions wait for a person before they run.
Learn moreExperiments
Sequential A/B tests on any flag, with warehouse metrics.
Learn moreAudit log
Every change by humans and agents, signed and exportable.
Learn moreEdge evaluation
Flags evaluated in under 20 ms, close to your users.
Learn moreHow it fits in your stack.
- Your code
- Rheostat edge
- Your metrics
- Decision
Worth every evaluation.
“We moved from a homegrown flag service and our bill was lower than the on-call hours it saved in month one.”
“Usage pricing meant we could start on one service and grow into it. No seat maths, no surprises.”
“The hard cap is the most underrated feature. Finance loves it more than engineering does.”
Stop guessing,
start measuring.
Turn any flag into an experiment and get a plain-English verdict when it is done.