create-cowork-plugin

Guide users through creating a new plugin from scratch in a cowork session. Use when users want to create a plugin, build a plugin, make a new plugin, develop a plugin, scaffold a plugin, start a plugin from scratch, or design a plugin. This skill requires Cowork mode with access to the outputs directory for delivering the final .plugin file.

Quality

93%

Does it follow best practices?

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Securityby

Passed

No findings from the security scan

Quality

Content

92%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, actionable skill body: a clear five-phase workflow with validation feedback loops, copy-paste-ready commands, and clean one-level-deep references. Only minor conciseness trim opportunities around basic-format explanations.

Suggestions

Trim explanations of widely-known conventions (kebab-case naming, semver MAJOR.MINOR.PATCH) to a one-line reminder to move conciseness to the top anchor.

Dimension	Reasoning	Score
Conciseness	Mostly efficient and Cowork-specific (directory layout, manifest JSON, packaging command), with minor over-explanation of concepts Claude already knows (kebab-case rules, semver format) that could be trimmed.	4 / 5
Actionability	Copy-paste-ready plugin.json, packaging bash command, and `claude plugin validate` plus a manual validation checklist; the design-phase guidance consists of specific, actionable questions appropriate for a guided-conversation skill.	5 / 5
Workflow Clarity	Five phases are explicitly sequenced each with a Goal and Output, and Phase 5 includes an explicit validation step with a feedback loop ("Fix any errors before proceeding") and a manual checklist fallback.	5 / 5
Progressive Disclosure	Clear overview with a summary table delegating detailed formats to two real one-level-deep references (references/component-schemas.md, references/example-plugins.md), both well-signaled in-line and in an Additional Resources section.	5 / 5
	Total	19 / 20 Passed

Description

90%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 with explicit what/when structure, third-person voice, and comprehensive natural trigger synonyms. Its only weakness is specificity: it lists many synonyms for a single action rather than multiple distinct concrete capabilities.

Suggestions

Add one or two distinct concrete actions beyond 'create' (e.g., 'design plugin components, generate the .plugin package, and validate plugin structure') to lift specificity toward the top anchor.

Dimension	Reasoning	Score
Specificity	Names the domain and one concrete action ("creating a new plugin from scratch") but the remaining phrases are synonyms of that single action rather than multiple distinct concrete actions.	3 / 5
Completeness	Explicitly answers both what ("Guide users through creating a new plugin from scratch in a cowork session") and when ("Use when users want to create a plugin...") with concrete trigger phrases.	5 / 5
Trigger Term Quality	Comprehensive coverage of natural phrasings users would actually say ("create a plugin, build a plugin, make a new plugin, develop a plugin, scaffold a plugin, start a plugin from scratch, or design a plugin").	5 / 5
Distinctiveness Conflict Risk	A clear niche (creating plugins from scratch in Cowork) with distinct, narrowly-scoped triggers and minimal overlap risk with other skills.	5 / 5
	Total	18 / 20 Passed

Validation

100%

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 — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository: anthropics/knowledge-work-plugins
Path: cowork-plugin-management/skills/create-cowork-plugin/SKILL.md
Commit: 8444efc

Reviewed: 6 days ago

Table of Contents

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