Prove the savings on your workload before you enable reuse.
SeenRelay targets one economic problem across agents, services, CI, browser workers and selected IoT/edge reads: independent callers repeatedly paying money, latency or constrained capacity for the same exact read-only execution. Shadow mode keeps every authoritative call enabled while you measure whether a cheaper safe path exists.
Reuse rate alone is not enough.
Let N be protected validations, C the marginal cost of a full authoritative validation, r the measured fraction that policy can safely reuse, and H the per-call overhead of the cheaper path. Count provider spend, latency and constrained capacity only when they matter to the workload.
baseline cost ≈ N × C reuse-path cost ≈ N × H + N × (1 - r) × C net avoided cost ≈ N × r × C - N × H Use SeenRelay only when: measured net avoided cost > integration + operating cost AND outcome equivalence remains acceptable.
Protect expensive repeated validation, not cheap requests.
The best candidate is deterministic, read-only, recurrent and materially more expensive than the validation shortcut. Local, source-native and provider-native mechanisms get credit before SeenRelay.
The first savings can stay entirely inside one customer's fleet.
The current local-first order is exact in-flight reuse → caller-owned encrypted private L1 → source-native confirmation → optional shared CHECK → original validation. A customer does not need other SeenRelay users before local/private/source-native savings can exist.
The public relay is an optional evidence layer, not the economic foundation of the first deployment.
Use your invoice, not a public benchmark.
The only deployment evidence that matters is your own measured workload. Enter the costs and constraints you actually pay for, then compare them with the measured cheaper path.
Measure one validation path before touching policy.
The deterministic clients can sit around an existing validation without suppressing it. During the measurement window, the original call remains authoritative and the report records recurrence and prospective economics.
Only an explicit caller policy can later authorize bounded reuse.
const validatePrice = relay.protectValidation({
fact,
validate: ({ conditionalHeaders }) =>
expensiveValidation(conditionalHeaders)
});
const value = await validatePrice(knownValue);If the workload does not save more than the layer costs, do not deploy the layer.
The first useful outcome of SeenRelay can be a negative one: it prevents a team from adding complexity where native controls or sparse recurrence already make the economics bad.