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shopify-polaris-checkout-extensions

Build custom functionality that merchants can install at defined points in the checkout flow, including product information, shipping, payment, order summary, and Shop Pay. Checkout UI Extensions also supports scaffolding new checkout extensions using Shopify CLI commands.

63

Quality

73%

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SecuritybySnyk

Critical

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tessl review fix ./plugins/shopify/skills/shopify-polaris-checkout-extensions/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

77%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.

The body is highly actionable with a strong, well-validated workflow and copy-paste-ready examples. Its main weaknesses are redundant restatements of the search/validate mandate and a large inline reference catalog that would benefit from progressive disclosure into separate files.

Suggestions

Consolidate the three repeated search/validate sections into one canonical workflow block to remove redundancy and save tokens.

Move the ~90-line component catalog and the extension-target/API inventories into a reference file (e.g. references/components.md) and link to it from SKILL.md.

Place the version stamp ('version: 2026-01') in a dedicated section so time-sensitive info is isolated from stable guidance.

DimensionReasoningScore

Conciseness

Mostly efficient with concrete lists, but the search/validate workflow is restated three times ('Required Tool Calls', 'MANDATORY: Search Before Writing Code', 'MANDATORY: Validate Before Returning Code') and the ~90-line inline component catalog could be tightened or externalized.

3 / 5

Actionability

Fully executable guidance throughout: real CLI commands, exact script invocations with all flags, per-component code examples, import snippets, and ✅/❌ attribute rules that are copy-paste ready.

5 / 5

Workflow Clarity

Clear numbered sequence (search → write → validate → retry → return) with an explicit validation checkpoint and a feedback loop (read error, search the type, fix, re-validate, max 3 retries).

5 / 5

Progressive Disclosure

Has clear section headers and references real scripts (search_docs.mjs, validate.mjs), but the large inline component catalog, extension-target list, and API/guide inventories are content that would be better split into a reference file rather than inlined in SKILL.md.

3 / 5

Total

16

/

20

Passed

Description

70%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.

The description clearly conveys what the skill does and targets a distinct Shopify checkout niche, but it omits any explicit 'when to use' trigger guidance, which caps completeness. Trigger-term coverage is good though not exhaustive.

Suggestions

Add an explicit 'Use when...' clause, e.g. 'Use when building or scaffolding Shopify checkout UI extensions, customizing checkout flow points, or working with Shop Pay.'

Include common synonyms/file artifacts users might say (e.g. 'checkout UI extensions', 'shopify.extension.toml', 'extension targets') to broaden trigger-term coverage.

Use third-person trigger phrasing to pair the existing 'what' with a concrete 'when'.

DimensionReasoningScore

Specificity

Names the domain and several concrete install points ('product information, shipping, payment, order summary, and Shop Pay') plus a concrete action ('scaffolding new checkout extensions using Shopify CLI commands'), with only minor coverage gaps.

4 / 5

Completeness

Has a clear 'what' (build/scaffold checkout extensions at defined points) but no 'Use when...' clause or equivalent explicit trigger guidance, which caps completeness at 3 per the rubric.

3 / 5

Trigger Term Quality

Good coverage of natural terms a Shopify developer would say ('checkout', 'checkout extensions', 'Shop Pay', 'shipping', 'payment', 'Shopify CLI'), though a few common variations and an explicit trigger phrase are missing.

4 / 5

Distinctiveness Conflict Risk

Occupies a clear niche (Shopify checkout UI extensions, Shop Pay) with distinct triggers and minimal overlap risk with other skills.

5 / 5

Total

16

/

20

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
openai/plugins
Reviewed

Table of Contents

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