Sandbox — pre-deploy validation

Rules are tested before they reach the ledger.

Mistakes never become audit records.

When Orchestrator rules change, Sandbox runs them against synthesized events that mirror production patterns. If a rule misbehaves — releases too aggressively, fails too conservatively, fires under wrong conditions — Sandbox catches it before the rule reaches production. Mistakes never become Confidential Ledger entries.

What it does

Pre-deploy

Rules tested before activation

Every Cascade rule update flows through Sandbox first. Synthesized events that mirror production patterns get evaluated against the new rules. If outcomes look wrong, the change is blocked.

Synthetic events

Simulates production patterns

Sandbox uses anonymized historical event traces + edge cases. Tests cover the long tail: weird waiver counts, boundary G702 math, COI lapses, mixed-state sub-stacks.

Catch-and-block

Errors don't reach prod

If Sandbox detects a regression — releases firing when they shouldn't, or stalling when they should fire — the deployment halts. The ledger never receives the bad release.

How it works

Diff-mode

Compares old vs new

Sandbox runs the same synthetic events against the OLD rule and the NEW rule, producing a side-by-side outcome diff. Operators see exactly what changes.

Regression library

Builds up over time

Every production incident becomes a Sandbox test case. Once a class of failure is caught, it can never happen again — the test runs every deploy.

Authority-respecting

Tests within Cascade limits

Sandbox respects the same authority limits as production. A Council-restricted rule can't be tested by an operator without Council approval.

Audit-recorded

Tests land on the ledger too

Sandbox runs are themselves audit-recorded. You can prove later that a rule was tested before deployment.

Related

Where rules run

Orchestrator

The engine that runs the rules Sandbox validates.

See Orchestrator →
Where rules originate

Council

Council is the governance layer that authorizes rule changes. Sandbox is the safety net that validates them.

See Council →
Foundation

Microsoft Ledger

Sandbox runs land here too — every test is provable.

See Ledger →

Diagram

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