We’re shipping a voice-first control plane for ZDX: • iOS Shortcut + Siri: hands-free entry point to dispatch, monitor, and govern ZDX agents. • MCP server tooling: standardized tool adapters with agentic loop orchestration and immutable, append-only action logs. • Axiomatic Simulation Stage: policy-driven alignment sandbox for admins and users to test morality/guardrails before production. • ZDX Console: model router, MCP server registry, and complete natural-language system controls. This post details the architecture, event model, governance, and rollout plan. ⸻ Why voice + MCP now • Latency budget + safety: short, targeted voice tasks route to small, fast models; high-risk tasks route to guarded paths with simulation gates. • Standardized tools: MCP (Model Context Protocol) normalizes tools the agents can call; we add first-class governance and auditability. • Regulated surfaces: append-only logs and policy simulation reduce operational risk and simplify post-hoc review. ⸻ High-level Architecture 1. Client (iOS) • Siri utterance → Shortcuts intent → HTTPS to ZDX Ingress. • Local confirmation and privacy redactions configurable per user. 2. Ingress/API • AuthN via signed tokens; request normalization to a Task Envelope. • Fan-out to Model Router or MCP Orchestrator. 3. Agentic Loop • Plan → Tool call(s) via MCP server(s) → Observe → Critique → Next step. • Each step produces an immutable log event (append-only). 4. Axiomatic Simulation Stage • Pre-flight checks: policy axioms, ethical constraints, and red-team scenarios. • Shadow execution option before live run. 5. ZDX Console • Model routing policies, MCP server registry, live traces, and natural-language admin. • Per-tenant guardrails and audit views. ⸻ iOS Shortcut + Siri Voice Control User flow • “Hey Siri, ZDX: summarize this email and draft a reply.” • Shortcut composes a Task Envelope with: user, intent, textual/audio payload, privacy flags, and urgency. • Sends to ZDX Ingress; shows streaming status and completion summary. Optional follow-ups: “Approve send”, “Escalate to human”.