The MCP write surface: tiers and boundaries
What each write tier unlocks, what stays off the table at every tier, and how to decide whether to leave the default.
3 lessons. 1 quiz.
Read in order, or jump to what you need.
The tiered write surface
By the end of this lesson, you will be able to describe what each of the four write tiers unlocks, name the capabilities that are never exposed at any tier, and explain where the decision is enforced.
Choosing the right write surface
By the end of this lesson, you will be able to choose the right write surface for a given action, execute the "agent helps; human writes" loop, and recognise when MCP is the wrong tool even where it is available.
Raising the tier: the decision
By the end of this lesson, you will be able to run the decision to leave write tier none as a deliberate org choice, name the gates a tier change should clear, and describe what changes in your threat model when you do.
Module quiz.
Take it once the lessons are done.