logging
Use when adding logs, debugging, or working with the Logger across the SDK and container runtime. Covers the constructor-injection pattern, child loggers, env-var configuration, and test mocking. (project)
76
95%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
89%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 solid skill description that clearly communicates when to use it and what it covers. The 'Use when...' clause is well-placed at the beginning with good trigger terms. The main weakness is that the capabilities are described more as topics covered rather than specific concrete actions the skill enables.
Suggestions
Rephrase topic coverage into concrete actions, e.g., 'Guides constructor-injection of Logger instances, creates child loggers, configures log levels via environment variables, and sets up test mocks' instead of just listing topics.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Logger, SDK, container runtime) and some actions (constructor-injection pattern, child loggers, env-var configuration, test mocking), but these are more like topics covered rather than concrete actions the skill performs. It doesn't list specific operations like 'create child loggers' or 'configure log levels via environment variables'. | 2 / 3 |
Completeness | Explicitly answers both 'what' (covers constructor-injection pattern, child loggers, env-var configuration, and test mocking) and 'when' (Use when adding logs, debugging, or working with the Logger across the SDK and container runtime). The 'Use when...' clause is present and clear. | 3 / 3 |
Trigger Term Quality | Includes strong natural trigger terms: 'logs', 'debugging', 'Logger', 'child loggers', 'env-var configuration', 'test mocking', 'constructor-injection'. These are terms a developer would naturally use when seeking help with logging in an SDK context. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly scoped to Logger functionality within a specific SDK and container runtime context. The combination of logging, constructor-injection, child loggers, and env-var configuration creates a distinct niche unlikely to conflict with other skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is an excellent, concise skill that covers logging patterns with actionable code examples, a clear configuration table, and practical test guidance. It respects Claude's intelligence by avoiding explanations of basic concepts while providing project-specific details that Claude wouldn't otherwise know. The structure is clean and each section serves a distinct purpose.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Every section is lean and purposeful. No unnecessary explanations of what logging is or how DI works. The child logger guidance and log-level table are compact yet informative. The only slightly verbose bit is the test section's second sentence, but it earns its place as a safety guardrail. | 3 / 3 |
Actionability | Provides executable TypeScript examples for the constructor injection pattern, child loggers, and test mocking with createNoOpLogger(). The env-var table gives exact variable names and allowed values. The log-level guidelines are specific and include a concrete example of structured error logging. | 3 / 3 |
Workflow Clarity | This is a pattern/reference skill rather than a multi-step destructive workflow, so explicit validation checkpoints aren't required. The content clearly sequences concerns: how to inject loggers → how to configure them → how to mock in tests → when to use each level. Each section is unambiguous. | 3 / 3 |
Progressive Disclosure | For a focused, single-purpose skill under 50 lines with no need for external references, the content is well-organized into clearly labeled sections (Pattern, Configuration, Tests, Guidelines). No monolithic walls of text or unnecessary nesting. | 3 / 3 |
Total | 12 / 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.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- cloudflare/sandbox-sdk
- Commit
3b58a22
- Reviewed
Table of Contents
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