VerifyVerify Before ProductionTest compatibility, inspect exact contracts and review the security and assurance boundary.01Hosted SandboxCreate a short-lived test session and run signed Policy Receipts, encrypted Packages, recipient receipts, notifications and audit evidence against the Protocol 1.0 API.02Protocol PlaygroundEdit and validate Supply-Y protocol objects locally in the browser using the published schemas, fixtures and domain conformance profile.03Schemas & ExamplesInspect Supply-Y JSON Schemas, valid examples, red-team fixtures, machine-readable conformance cases and validation evidence.04Security & TrustSupply-Y data ownership, encryption, key trust, policy receipts, malicious-input controls, audit integrity and explicit security limits.05ConformanceExecutable Supply-Y object, thread-context, cryptographic, Safe Agent and transport checks, plus production certification requirements.