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skill-installer

Install Codex skills into the canonical git source tree from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).

58

Quality

67%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

The risk profile of this skill

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tessl review fix ./Plugins/skill-factory/fixtures/budget-archive/2026-04-19/skills/infrastructure_ops/infrastructure_ops/skill-installer/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

35%Scale 1-3

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

The skill provides reasonable structure and safety-conscious guidance for installing skills, with good progressive disclosure signposting and a clear workflow outline. However, it critically lacks actionability — there are no concrete commands, code examples, or executable instructions, making it more of an abstract policy document than a usable skill. The redundancy between Anti-Patterns and Constraints also wastes tokens.

Suggestions

Add concrete, executable commands for the core workflow steps — especially step 3 ('Run minimal installer helper command') and step 4 ('Verify resulting filesystem state'). Include the actual CLI invocations or tool calls Claude should use.

Provide a concrete example of the required output contract with actual field values, not just field names (e.g., a JSON block showing schema_version, mode, source, destination, validation_evidence, restart_required with sample values).

Merge 'Anti-Patterns to Avoid' into 'Constraints' to eliminate redundancy and save tokens.

Add an error recovery step to the workflow (e.g., 'If verification fails in step 4, check troubleshooting.md and retry') to create an explicit feedback loop.

DimensionReasoningScore

Conciseness

Mostly efficient but has some redundancy — the 'Anti-Patterns to Avoid' and 'Constraints' sections largely duplicate each other (e.g., overwriting without confirmation, untrusted inputs). The 'Core Philosophy' section is somewhat abstract and could be folded into the workflow or constraints.

2 / 3

Actionability

No concrete commands, code examples, or executable steps are provided. The workflow is described abstractly ('Run minimal installer helper command') without specifying what that command is, what arguments it takes, or what the output looks like. The 'required output contract' lists field names but gives no example values or schema.

1 / 3

Workflow Clarity

Steps are listed in sequence and include a verification step (step 4), which is good. However, there are no concrete validation commands, no error recovery/feedback loop if verification fails, and the steps are too abstract to be reliably followed (e.g., 'Run minimal installer helper command' — what command?).

2 / 3

Progressive Disclosure

References to install-flows.md, troubleshooting.md, and contract.yaml are well-signaled with clear 'read when' conditions. However, no bundle files were provided, so we cannot verify these references actually exist. The skill also references other skills (skill-creator, skill-builder) for routing, which is good practice, but the main content could benefit from a quick-start section before the references.

2 / 3

Total

7

/

12

Passed

Description

100%Scale 1-3

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

This is a strong skill description that clearly communicates what the skill does and when to use it. It uses third person voice, lists specific actions, includes natural trigger terms, and has an explicit 'Use when' clause with multiple trigger scenarios. The description is concise yet comprehensive, and its specificity to Codex skill installation makes it highly distinctive.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'Install Codex skills into the canonical git source tree', 'list installable skills', 'install a curated skill', 'install a skill from another repo (including private repos)'. These are clear, actionable capabilities.

3 / 3

Completeness

Clearly answers both 'what' (install Codex skills from curated list or GitHub repo path) and 'when' (explicit 'Use when' clause covering listing skills, installing curated skills, and installing from repos). The trigger guidance is explicit and well-structured.

3 / 3

Trigger Term Quality

Includes natural keywords users would say: 'install', 'skills', 'curated list', 'GitHub repo', 'private repos', 'list installable skills'. These cover the main ways a user would phrase requests related to this functionality.

3 / 3

Distinctiveness Conflict Risk

Highly distinctive with a clear niche: installing Codex skills from specific sources. The terms 'Codex skills', 'canonical git source tree', 'curated list', and 'GitHub repo path' create a very specific domain unlikely to conflict with other skills.

3 / 3

Total

12

/

12

Passed

Validation

90%

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

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

10

/

11

Passed

Repository
jscraik/Agent-Skills
Reviewed

Table of Contents

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