Marketing Assumption Tester
Surfaces the unproven assumptions behind a plan, campaign, ICP, or channel bet, and rates how much you're actually staking on each one before you commit further.
Get This Skill
Run this command in your terminal, or paste it into Claude—or your favorite AI assistant—and ask it to install the skill for you.
What This Skill Does
Names what your plan is quietly assuming
Pulls out the ICP, channel, message, and execution assumptions a strategy rests on but never states out loud.
Separates load-bearing from cosmetic
Rates how much the plan's success actually depends on each assumption, not just whether it's true.
Rates evidence honestly
Distinguishes a real pattern you've seen from a hunch, without inventing a confidence score to fill the gap.
Flags exactly what's worth validating first
Surfaces the highest-dependency, lowest-evidence assumptions as the priority list.
Surfaces, never resolves
Tells you what to go test; running that test is still yours to do.
Best Used For
- Stress-testing an ICP, channel bet, or positioning choice before committing further budget
- Sorting out which assumptions actually matter if they turn out wrong
- Getting an honest read on how much of a strategy is real evidence versus instinct
- A gut check before doubling down on a plan that's mostly worked so far
How It Works
Every marketing plan rests on a handful of assumptions that quietly get treated as settled fact - this audience responds to this channel, this message resonates across every segment, a result that held at small scale will hold at double the volume. Most of these never get named out loud until one of them turns out to be wrong.
This skill takes a plan, campaign, ICP definition, channel choice, or strategy with no dollar figure or ROI claim attached, and extracts what it's actually resting on - across ICP, channel, message, and execution assumptions. Each one gets rated on two dimensions: how much the plan's success depends on it, and how much real evidence actually backs it up.
You walk away with a priority list of exactly what's worth validating before committing further - the assumptions the plan depends on most, with the least behind them. It names what to go test; it doesn't run the test or validate the assumption for you.
Get This Skill
Run this command in your terminal, or paste it into Claude—or your favorite AI assistant—and ask it to install the skill for you.
Want Marketing Assumption Tester Custom-Built for Your Team?
Marketri can adapt this skill to your brand, data, and workflows — or build a new one from scratch.
Common questions
No - it surfaces what the strategy assumes and how much evidence backs each assumption. Validating or disproving it is a separate step you take next.
Then Business Case Challenger is the better fit - it runs a fuller stress test including downside and alternatives for a costed initiative.
No - evidence is rated only from what you actually describe. If nothing real backs an assumption, it says so directly instead of estimating a number.
Not directly - this tests what one plan depends on. To rank two or more competing investments against each other, use Marketing Investment Triage.
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