Distinguish in-scope iteration from additional services and authorize the difference, so unbilled changes don't erode the fee. Reach for this when the design keeps changing.
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---
name: control-scope-creep
description: "Distinguish in-scope iteration from additional services and authorize the difference, so unbilled changes don't erode the fee. Reach for this when the design keeps changing."
---
# Skill: Control scope creep
Unbilled scope changes erode the fee silently.
## Step 1 — Define the baseline scope
What the fee covers, by phase (§3 #2).
## Step 2 — Flag the creep
Identify out-of-scope options and changes.
## Step 3 — Authorize additional services
Route the change to an additional-services authorization.
## Step 4 — Protect the gate
Don't advance phases without approval (§3 #6).
## Output
A scope baseline, flagged creep, an additional-services path, and a protected gate.
