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calculator-design

Designing interactive calculators (ROI calculators, pricing estimators, savings projections, mortgage calculators, custom assessments) that deliver real decision-support value while serving as lead magnets and qualified-traffic generators. Honest about vanity-calculator (no real value), lead-trap (hides the answer behind email), and transparent-decision-tool (gives the result and earns the email through tiered value) patterns. Triggers on calculator, ROI calculator, pricing estimator, savings calculator, custom calculator, interactive tool, decision tool, financial calculator. Also triggers when an audience needs a calculation-driven lead magnet, when a vanity calculator is producing leads but no qualified ones, or when a calculator is being scoped for the first time.

Quality

86%

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SKILL.md
Quality
Evals
Security

Quality

Content

71%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A well-structured methodology skill: concrete patterns, a worked example, a sequenced audit framework, and exemplary one-level-deep reference navigation with all bundle files present. The main weakness is token efficiency — the intro and closing restate the frontmatter and the three keystone patterns are repeated across four sections.

Suggestions

Cut the opening section's restatement of the frontmatter description ('A senior growth practitioner's playbook for designing interactive calculators that deliver... ROI calculators, pricing estimators, savings projections, mortgage calculators, custom assessments.') down to one or two lines, since it duplicates the description verbatim.

State the vanity-calculator / lead-trap / transparent-decision-tool triad once in the keystone framing section and reference it by name in the email-capture, anti-patterns, and closing sections instead of re-describing the 'user inputs 8 fields, hits Calculate, sees enter-your-email' scenario multiple times.

Trim the rhetorical framing passages ('The calculators that work as compounding assets do something different...', 'That is the bar...') that restate the skill's thesis without adding actionable design guidance.

DimensionReasoningScore

Conciseness

Most sections carry genuine expert methodology Claude does not inherently know (tier design discipline, methodology disclosure options, failure diagnostics), but there is noticeable padding: the opening section ("A senior growth practitioner's playbook for designing interactive calculators that deliver real decision-support value while serving as lead magnets and qualified-traffic generators. ROI calculators, pricing estimators...") duplicates the frontmatter nearly verbatim, and the vanity/lead-trap/transparent framing is restated in the keystone section, the email-capture section ("The user inputs 8 fields, hits Calculate, sees 'enter your email'"), the anti-patterns section, and the closing. Not 2 because the bulk of each section delivers non-redundant, domain-specific guidance rather than filler.

3 / 5

Actionability

Concrete guidance throughout: named input types with when-to-use rules ("Numeric (revenue, customer count, monthly cost)... Slider (percentage estimates...)"), a worked inline formula example ("Your savings = (current cost x 12) - (our cost x 12) + implementation savings of $X"), a fully worked three-tier SaaS pricing example, a 12-item audit framework, and symptom-to-diagnosis failure modes. Not 5 because some checklist items remain abstract directives ("Distribution planned", "Update cadence defined") without how-to specifics, pushing them toward the references.

4 / 5

Workflow Clarity

The 12-consideration framework gives a clearly ordered sequence from the build decision (item 1) through design (2-8) to operational concerns and measurement (9-12), and litmus tests act as checkpoints ("After running the calculator, can a stranger in the target audience defend the result to a stakeholder?" and the closing two-question test). Not 5 because the checkpoints are evaluative heuristics rather than explicit validate-then-proceed steps with error-recovery loops; not 3 because validation-style checkpoints are present and the sequence is coherent.

4 / 5

Progressive Disclosure

The body is a structured overview with nine well-signaled, one-level-deep references, each linked inline ("Detail in [`references/...`](references/...)") and summarized again in a closing Reference files section with one-line descriptions; all nine linked files exist in the bundle and none reference further files. Not 4 because the split is appropriate — overview-level framing stays inline while detail is consistently pushed to references.

5 / 5

Total

16

/

20

Passed

Description

96%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong description: concrete capability list, comprehensive natural trigger terms, and an explicit when-to-use clause in third-person voice. The only weakness is that broad trigger terms like 'interactive tool' and 'decision tool' slightly overlap with adjacent growth-tooling skills.

DimensionReasoningScore

Specificity

The description lists multiple concrete calculator types ("ROI calculators, pricing estimators, savings projections, mortgage calculators, custom assessments") and specific functions — distinguishing vanity-calculator, lead-trap, and transparent-decision-tool patterns — giving comprehensive, concrete coverage of what the skill does. It is not below 5 because no capability area of the skill is left unmentioned in actionable terms.

5 / 5

Completeness

Both 'what' ("Designing interactive calculators ... that deliver real decision-support value while serving as lead magnets and qualified-traffic generators") and 'when' (explicit "Triggers on..." and "Also triggers when..." clauses) are clearly and explicitly stated with concrete trigger phrases. This matches the anchor-5 good example structure exactly; score 4 would require the 'when' to be less explicit, which it is not.

5 / 5

Trigger Term Quality

"Triggers on calculator, ROI calculator, pricing estimator, savings calculator, custom calculator, interactive tool, decision tool, financial calculator" plus situational triggers ("when a vanity calculator is producing leads but no qualified ones") gives comprehensive natural-term coverage with synonyms. Not 4 because essentially every phrasing a user would naturally use for this need is present.

5 / 5

Distinctiveness Conflict Risk

The niche (calculators as lead magnets) is clear and triggers like "ROI calculator" and "mortgage calculator" are distinct, but broad terms "interactive tool" and "decision tool" create minor overlap risk with closely related skills (e.g., quiz/assessment or general lead-magnet design). Not 5 because of that minor overlap; not 3 because the core triggers would not plausibly fire the wrong skill.

4 / 5

Total

19

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository

rampstackco/claude-skills

Path

skills/calculator-design/SKILL.md

Reviewed

Table of Contents

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