Signal 05 of 09 · Nebula Diagnostic Spec v1.0.0

CTA Clarity

Is the next step obvious and proportionate to visitor intent?

Decision rule

One primary action must dominate. A run flags pages offering several competing equal-weight actions, vague action labels, or asks disproportionate to intent (for example demanding account creation before delivering any value).

What the engine inspects

  • ·button label text
  • ·count and relative weight of distinct actions
  • ·ask placement relative to value shown

How to check it yourself

  1. Count the distinct equal-weight actions visible in the first viewport.
  2. Read each button label aloud: a strong label names the specific outcome ("Run my free audit"), not a category ("Submit").
  3. Several competing asks, vague labels, or an oversized ask relative to delivered value fail the signal.

The engine automates this inspection and attaches measured evidence to every failing condition. A manual pass is not a substitute for the recorded evidence trail, but it should agree with it.

Pass / fail examples

Pass

Single high-contrast "Run my free audit" button; secondary links are visually subordinate. Clear.

Fail

Four equal-weight buttons ("Book a call", "Sign up", "Learn more", "Follow us") compete in the first viewport. Flagged.