Stop Writing Tone Instructions. Layer Them. - Isadora Martin-Dye, Isadora & Co
Jun 26, 2026 · 20:57
Isadora Martin-Dye, founder of Isadora & Co and builder of AI for a wedding venue, a personal companion, and a missing persons tool, argues brand voice requires a four-layer architecture instead of a single system prompt. The layers are immutable identity (hard rules like never claiming a body), situational mode (adjusting to user's context like grief), example-anchored voice (tone guide), and a post-generation veto (deterministic check catching errors like offering a booked date). Instructions are probabilistic; the veto is deterministic. A prompt will eventually fail; the only question is whether it's caught before reaching a customer. Examples include a wedding AI that must disclose it is AI and not say "I'd love to show you around," and a missing persons tool that must never use "confirmed" or "matched." She notes that multi-tenant voice leaks require identity to never have a default. The veto layer is the cheapest and most critical safeguard.
