Day 2 morning move of a Foundation Sprint. Forces generation of 3 to 7 candidate approaches as one-page summaries before the team converges on a top bet. Use after Day 1 is signed and before Magic Lenses on Day 2 afternoon. Enforces a minimum of 3 approaches to prevent first-idea anchoring. Each approach summary names what it is, why it serves the differentiators, and includes a simple visual.
SkillScore95Maintained
Automatic
◆Product Management pack
Last verified 8/18/2026
What it changes
Passed 21 of 22 test cases with the skill, and 6 of 22 without it.
Without skill27%
With skill95%
Checks it passed that the model alone missed
The response rejects proceeding with only two approaches.
The response caps the maximum number of approaches at seven.
The response specifies a total time of 75 minutes for the sequence.
and 17 more in the full report
15 fixed6 passed either way1 still failing0 broke
Pass-rate lift
+68 pp
Tokens
+66%
Agent turns
0%
Response time
-39%
Model gemini-3.6-flashMeasured 8/18/2026v121 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 15 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 15
Prompt
How much time is allocated to Step 4 (writing the one-page summaries for each selected approach)?
What was checked, without and with the skill
Checked
Without skill
With skill
The response specifies 25 to 40 minutes for writing the one-page summaries.
Missed
Passed
case-18 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md112 lines3 files
Foundation Sprint Approach Options
Day 2 morning of a Foundation Sprint. The team forces itself to generate multiple plausible approaches before committing to one. The skill enforces a minimum of 3 approaches; anchoring on a single approach is the most common Day 2 failure mode.
Family contract: docs/reference/skill-families/foundation-sprint-skills-contract.md. This skill is a member of foundation-sprint-skills.
When to Use
Day 2 morning of a Foundation Sprint.
Day 1 is signed; the Mini Manifesto, decision principles, and differentiation chart are committed.
The team is ready to generate candidate approaches before evaluating them through Magic Lenses in the afternoon.
When NOT to Use
Day 1 is unresolved. Approach Options without differentiation context produces approaches that miss the strategic position.
The team has only one approach in mind and is unwilling to generate alternatives. The skill forces minimum 3; if the team refuses, the issue is sprint discipline, not tooling.
More than 7 approaches are emerging organically. The skill caps generation at 7; beyond that the team is generating features, not strategic approaches.
What This Skill Produces
A single bundled artifact containing:
3 to 7 one-page approach summaries, each with:
Name and label (color, letter, ID)
One-sentence "what it is"
"Why it's a good idea" rationale (1 short paragraph)
Simple doodle or textual visual description
How the approach serves the two chosen differentiators
Approach set summary table comparing all approaches at a glance (label, name, capture mechanism, recall mechanism, primary trade-off).
See references/TEMPLATE.md for the canonical structure and references/EXAMPLE.md for the Brainshelf example.
Sequence (75 minutes)
Step 1: Frame the approach space (5 min)
The facilitator restates the differentiation: "We are committing to [differentiator 1] and [differentiator 2]. Approaches that fail either of these are out of scope." This sets the boundary; the team generates inside it, not outside it.
Day 2 end capstone move of a Foundation Sprint. Compresses the sprint's full strategic frame into a single canonical sentence (the Founding Hypothesis) plus an assumption scorecard, why-we-believe, what-could-prove-us-wrong, and recommended next validation step. Use after Magic Lenses is signed. Strict canonical template; paraphrase is not accepted in v0.1.0. The Founding Hypothesis is the spine artifact the sprint exists to produce.