Timothée Diot
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Method

Supervised AI. A human makes the calls.

The bottleneck is no longer writing code. It is specifying clearly, testing and deciding. That is the core of product work.

Phases

Four phases. Short cycles. You approve every step.

  1. 01Frame

    Interview, goals, audience, pages, content and constraints.

    Deliverable

    Brief

    You approve

    Scope and priorities
  2. 02Prototype

    I turn the brief into a clickable prototype.

    Deliverable

    Prototype

    You approve

    Flows and look
  3. 03Iterate

    Short rounds of feedback and adjustments.

    Deliverable

    Versions and a changelog

    You approve

    Each version
  4. 04Build and ship

    Production code, tests, deployment and handover.

    Deliverable

    Live site, code and docs

    You approve

    Final acceptance

AI

Where AI helps, and where it does not

AI is good at

  • Generating pages and components from a clear spec
  • Writing the tests that prove nothing is broken
  • Suggesting fixes, which I review before merging

A human stays in charge of

  • Architecture choices
  • Payments, personal data and security
  • Anything without a clear success criterion

Measure

Decision metrics, not vanity metrics.

Success criteria are agreed in the Frame phase. After launch, product analytics show whether the product meets them, and what to change next.

Vanity metrics

Look good in a report, change no decision.

  • Page views
  • Sign-ups
  • Downloads
  • Time on site

Decision metrics

Tied to the goal in the brief. Each one can trigger a change.

  • Activation: users who reach the first real value
  • Retention: users who come back
  • Task completion on the key journeys
  • Conversion to the goal set in the brief

Instrumented with PostHog: events, funnels and retention.

Four guardrails

  1. 01

    A written, approved spec before any generated code.

  2. 02

    Success criteria agreed with you before building.

  3. 03

    Human review and tests before anything goes live. The AI never touches production or secrets.

  4. 04

    A human on every irreversible decision: payments, data, domain name. Scope capped per phase.

Ready for phase one? It starts with a short brief.