ENGINEERING CASE STUDY
Consequential Execution Runtime
Rust execution-assurance research for exact action identity, effect contracts and ambiguous external outcomes.
Why the project exists
An agent can issue individually valid requests across multiple systems while the overall outcome remains unsafe, stale or unrecoverable. Consequential Execution Runtime (CER) investigates how a runtime can bind an approval to one exact operation and make ambiguous external side effects explicit.
Implemented foundation
The public repository describes a Rust execution kernel with canonical action identity, strict JSON ingress, effect contracts, provider-aware retry decisions and explicit IN_DOUBT handling when reconciliation cannot establish an outcome.
It also documents regression checks and CI for formatting, Clippy, tests and toolchain compatibility. This is engineering work that can be inspected—not proof of a deployed enforcement layer.
What is not yet proven
The README explicitly identifies missing durable execution journaling, credential brokerage, signed receipts, production adapters and bypass-resistant enforcement. A runtime without those boundaries must not be marketed as a complete production safety control plane.