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maintaining-binary-log-compatibility

Guides changes to MSBuild binary log infrastructure. Consult when modifying BinaryLogger or BinaryLogReplayEventSource, adding new BuildEventArgs types, changing event serialization/deserialization, modifying ProjectImportsCollector, adjusting message importance levels, or making changes that affect .binlog content. Also applies when verifying that behavioral changes are properly reflected in binary log output.

68

Quality

83%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

75%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 body with concrete file paths, a compatibility code pattern, tables, and a checklist. It is mostly lean and clearly sequenced, with only minor over-explanation and implicit rather than explicit validate-retry loops.

Suggestions

Make the round-trip and version-compatibility tests an explicit validate→fix→re-validate loop to strengthen workflow_clarity for risky format changes.

Replace the placeholder serialization snippet with a concrete, copy-paste-ready example using a real field to lift actionability.

Trim the opening framing paragraph that restates what a binary log is, since Claude already knows this.

DimensionReasoningScore

Conciseness

Generally efficient with tight tables, a lean code pattern, and a checklist; a few framing sentences ('The binary log is MSBuild's primary diagnostic format...') explain context Claude largely already knows and could be trimmed.

4 / 5

Actionability

Provides concrete file paths, a backward-compatible serialization code pattern, specific version-increment guidance, and a verification checklist; the code example uses placeholder names (newField/newFieldVersion/defaultValue) as a pattern rather than fully copy-paste-ready code.

4 / 5

Workflow Clarity

The 'Adding New Build Event Types' section gives a clear 5-step sequence and the Testing/Checklist sections supply validation checkpoints; the round-trip/version-compatibility tests are present but a full validate→fix→retry loop is only implicit rather than spelled out.

4 / 5

Progressive Disclosure

Well-organized into clear sections with a single clearly-signaled one-level reference (Binary-Log.md) and no bundle files present; most content is appropriately placed inline, though some tables could conceivably live in separate reference files.

4 / 5

Total

16

/

20

Passed

Description

92%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, specific description that clearly states both capability and trigger conditions with concrete MSBuild binary-log actions. Trigger phrasing leans somewhat technical (class names), slightly limiting natural-term coverage.

Suggestions

Add a few user-natural synonyms such as 'build log' or 'log replay' alongside the class names to broaden trigger matching.

Consider a trailing 'Use when...' clause that consolidates the triggers into a single scannable phrase.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — modifying BinaryLogger/BinaryLogReplayEventSource, adding BuildEventArgs types, changing serialization/deserialization, adjusting importance levels, affecting .binlog content — covering the domain comprehensively.

5 / 5

Completeness

Explicitly answers what ('Guides changes to MSBuild binary log infrastructure') and when ('Consult when modifying...', 'Also applies when verifying...') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Includes natural synonyms and the file extension ('binary log', '.binlog', 'binary log output', 'message importance', 'serialization'), though several triggers are technical class names rather than phrases a user would naturally say.

4 / 5

Distinctiveness Conflict Risk

Occupies a clear niche (MSBuild binary log infrastructure) with distinct, specific triggers and minimal overlap risk with other skills.

5 / 5

Total

19

/

20

Passed

Validation

87%

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

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

relative_links

Relative link issues: 1 suspicious

Warning

Total

14

/

16

Passed

Repository
dotnet/msbuild
Reviewed

Table of Contents

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