Name: extensions-review
Rating: 68.8 (1 reviews)
Author: dotnet

extensions-review

Guidance for writing and modifying Microsoft.Extensions.* and System.IO.Compression code in dotnet/runtime. Covers DI lifetime management, configuration binding, options validation, logging provider patterns, caching semantics, compression format compliance, and host lifecycle. For full code review, delegates to the @extensions-reviewer agent. Trigger words: Microsoft.Extensions, IServiceCollection, IConfiguration, ILogger, IHost, IMemoryCache, IOptions, ZipArchive, HttpClientFactory, IFileProvider, IChangeToken.

Quality

82%

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Securityby

Passed

No findings from the security scan

Quality

Content

65%Weight 40%Scale 1-3

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

A highly actionable, concept-free reference packed with executable C# and decision trees, but it is a monolithic single-file skill that would benefit from offloading detailed examples into reference files and adding explicit validation feedback loops.

Suggestions

Move full code examples (e.g. the captive-dependency and archive-extraction blocks) into files under references/ and keep SKILL.md as a concise overview with one-level-deep links, improving progressive_disclosure and conciseness.

Add an explicit validate→fix→retry feedback loop for the riskier operations (e.g. a checklist around compression format compliance or background-service disposal) to raise workflow_clarity.

Trim the body by replacing some inline WRONG/CORRECT pairs with compact rules, retaining only one representative example per pattern.

Dimension	Reasoning	Score
Conciseness	The body is dense and free of concept padding Claude already knows, but at ~250 lines it is substantial and several full code examples could be offloaded to reference files to tighten the overview.	2 / 3
Actionability	Every section ships executable, copy-paste-ready C# with explicit WRONG/CORRECT contrasts and concrete APIs (TryAddSingleton, HybridCache.GetOrCreateAsync, BrotliStream), fully matching the executable-code anchor.	3 / 3
Workflow Clarity	Decision trees sequence choices clearly and the testing section adds validation/disposal checkpoints, but the body reads as a reference catalog rather than a workflow and lacks an explicit validate→fix→retry feedback loop for risky operations.	2 / 3
Progressive Disclosure	No bundle files exist (references/, scripts/, assets/ are absent) and all guidance is inline in SKILL.md; sections are well-organized but content that should be split into separate files is kept inline, matching the mid-tier anchor.	2 / 3
	Total	9 / 12 Passed

Description

100%Weight 40%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.

A precise, third-person description that cleanly answers both what the skill covers and when to use it, with concrete symbol-level triggers tied to a well-scoped niche. Only minor nit is the mechanical "Trigger words:" framing.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete capability areas — "DI lifetime management, configuration binding, options validation, logging provider patterns, caching semantics, compression format compliance, and host lifecycle" — matching the anchor for naming several specific actions.	3 / 3
Completeness	It states both what the skill does ("Guidance for writing and modifying Microsoft.Extensions.* and System.IO.Compression code") and when to use it via an explicit "Trigger words:" list and a delegation note, satisfying the explicit-trigger requirement.	3 / 3
Trigger Term Quality	The trigger words (IServiceCollection, IConfiguration, ILogger, IHost, IMemoryCache, IOptions, ZipArchive, HttpClientFactory) are precisely the symbols a developer names when touching this domain; coverage of natural domain terms is good, though the "Trigger words:" label is slightly mechanical.	3 / 3
Distinctiveness Conflict Risk	The niche is sharply bounded to Microsoft.Extensions.* and System.IO.Compression in dotnet/runtime with distinct symbol triggers, making it unlikely to fire for an unrelated skill.	3 / 3
	Total	12 / 12 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: dotnet/runtime
Path: .github/skills/extensions-review/SKILL.md
Commit: ba10a6e

Reviewed: 8 days ago

Table of Contents

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