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create-package

Create a new monorepo package using the create-package CLI

69

1.31x
Quality

52%

Does it follow best practices?

Impact

100%

1.31x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./.claude/skills/create-package/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Discovery

32%

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 is concise and identifies a specific tool and action but is too minimal to be effective for skill selection. It lacks a 'Use when...' clause, which is critical for Claude to know when to select this skill. It also misses common trigger term variations that users might naturally use.

Suggestions

Add a 'Use when...' clause with explicit triggers, e.g., 'Use when the user wants to add a new package to the monorepo, scaffold a library, or mentions the create-package CLI.'

Include natural trigger term variations such as 'scaffold', 'new library', 'add workspace package', 'init package' to improve matching.

Expand the 'what' portion to mention any additional capabilities like configuring package settings, choosing templates, or setting up dependencies.

DimensionReasoningScore

Specificity

Names a specific action ('Create a new monorepo package') and a specific tool ('create-package CLI'), but only describes one action rather than listing multiple concrete capabilities.

2 / 3

Completeness

Describes what it does (create a monorepo package using a CLI) but completely lacks a 'Use when...' clause or any explicit trigger guidance, which per the rubric caps completeness at 2, and since the 'what' is also thin, this scores a 1.

1 / 3

Trigger Term Quality

Includes relevant terms like 'monorepo', 'package', and 'create-package CLI' that users might say, but misses common variations like 'new library', 'add package', 'scaffold', 'init package', or 'workspace package'.

2 / 3

Distinctiveness Conflict Risk

The mention of 'monorepo package' and 'create-package CLI' provides some specificity, but without more context it could overlap with general package creation or scaffolding skills.

2 / 3

Total

7

/

12

Passed

Implementation

72%

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

This is a solid, focused skill for a single-purpose CLI task. It provides actionable, executable examples and clear structure. The main weaknesses are minor verbosity in the overview/notes sections and the lack of a verification step after package creation.

Suggestions

Trim the Overview section to 1 line — the command's purpose is self-evident from its name and arguments

Add a verification step after creation, e.g., 'Verify: check that `packages/<name>/package.json` exists and `yarn workspaces list` includes the new package'

DimensionReasoningScore

Conciseness

The overview section explains what the CLI does (generating scaffolding, setting up structure, etc.) which is somewhat unnecessary since the command name and arguments already convey this. The Notes section repeats the prefix behavior already mentioned in Required Arguments. Could be tightened.

2 / 3

Actionability

Provides fully executable bash commands with concrete examples, including the create-package command, adding dependencies, and updating tsconfig references. The example is copy-paste ready with realistic package names.

3 / 3

Workflow Clarity

The 3-step usage pattern is clear and well-sequenced, but there's no validation checkpoint — no step to verify the package was created correctly (e.g., checking the generated files, running a build, or confirming the workspace is recognized). For a scaffolding operation this is acceptable but not ideal.

2 / 3

Progressive Disclosure

For a simple, single-purpose skill under 50 lines with no need for external references, the content is well-organized with clear sections (Overview, Required Arguments, Usage Pattern, Example, Notes). No bundle files are needed for this straightforward skill.

3 / 3

Total

10

/

12

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.

Validation11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository
MetaMask/ocap-kernel
Reviewed

Table of Contents

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