Highly actionable content with a clear validated workflow and PortOne-specific gotchas; its main gaps are repeated framing across sections and a monolithic structure that would benefit from splitting detailed material into referenced files.

Suggestions

Consolidate the repeated PortOne-vs-Bearer auth guidance into one authoritative section and reference it elsewhere instead of restating it.

Move the full webhook handler code and the MCP tool catalog into separate reference files (e.g., references/webhook.md, references/mcp-tools.md) and link to them one level deep to improve progressive disclosure.

Tighten the 'Critical: Do Not Trust Internal Knowledge' section so each rule is stated once rather than re-explained in Version Selection and Code Generation Guidelines.

Dimension	Reasoning	Score
Conciseness	Mostly efficient and PortOne-specific (not concepts Claude already knows), but the PortOne-vs-Bearer auth point and the 'do not trust internal knowledge' warning recur across several sections, so it could be tightened.	2 / 3
Actionability	Provides concrete MCP tool names with parameters and executable code for SDK loading, requestPayment, server-side verification, and webhook signature handling — copy-paste ready.	3 / 3
Workflow Clarity	The Integration Workflow is a clear numbered sequence (환경 파악 → 예시 코드 조회 → 코드 생성 → 웹훅 연동) with explicit validation checkpoints (integration-validator cross-checking schemas, server-side payment verification, webhook signature verification) and a 'mark 확인 필요' feedback rule.	3 / 3
Progressive Disclosure	The ~290-line body is well-sectioned but monolithic: detailed code blocks, the full webhook handler, and the MCP tool reference are all inline with no one-level-deep references to separate files, and no bundle files exist to offload them.	2 / 3
	Total	10 / 12 Passed

Description

90%

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 with explicit when/what structure and rich bilingual trigger terms; its only weakness is that the capability verbs are somewhat general rather than a list of concrete actions.

Dimension	Reasoning	Score
Specificity	Names the domain and some actions ('implementing payment functionality with PortOne', 'comprehensive guidance for V1 and V2 API integration') but does not enumerate multiple concrete actions like extract/fill/merge; the verbs remain general.	2 / 3
Completeness	Explicitly answers both what ('Provides comprehensive guidance for V1 and V2 API integration') and when ('This skill should be used when the user asks about ...'), with an explicit Use-when clause.	3 / 3
Trigger Term Quality	Strong coverage of natural user phrasing in both Korean and English ('포트원 연동', 'PortOne integration', '결제 연동', 'PG 연동', 'billing key', '빌링키', '정기결제', '웹훅', 'payment API'), matching terms a user would actually say.	3 / 3
Distinctiveness Conflict Risk	PortOne is a narrow, named niche with distinct bilingual triggers, making it unlikely to fire for the wrong skill.	3 / 3
	Total	11 / 12 Passed

Validation

93%

Warnings & errors only

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

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Reviewed

6 days ago

Table of Contents

Discovery Implementation Validation