managing-api-cache
Implement intelligent API response caching with Redis, Memcached, and CDN integration. Use when optimizing API performance with caching. Trigger with phrases like "add caching", "optimize API performance", or "implement cache layer".
71
66%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./plugins/api-development/api-cache-manager/skills/managing-api-cache/SKILL.mdQuality
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 description that clearly communicates its purpose and provides explicit trigger guidance. Its main weakness is that the 'what' portion could be more specific about the concrete actions performed beyond just 'implement' — listing specific capabilities like cache invalidation strategies, TTL management, or cache-aside patterns would strengthen it. The trigger terms and 'Use when' clause are well-constructed.
Suggestions
Expand the capability list with more specific actions, e.g., 'Implement cache invalidation, configure TTL policies, set up cache-aside patterns' to improve specificity.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (API response caching) and specific technologies (Redis, Memcached, CDN), but the actions are limited to just 'implement' — it doesn't list multiple concrete actions like cache invalidation, TTL configuration, cache-aside patterns, etc. | 2 / 3 |
Completeness | Clearly answers both 'what' (implement API response caching with Redis, Memcached, CDN) and 'when' (explicit 'Use when' clause and 'Trigger with phrases' providing concrete trigger guidance). | 3 / 3 |
Trigger Term Quality | Includes natural trigger phrases users would say: 'add caching', 'optimize API performance', 'implement cache layer', plus technology names like Redis, Memcached, and CDN. These cover common variations of how users would request this functionality. | 3 / 3 |
Distinctiveness Conflict Risk | The combination of API caching, specific technologies (Redis, Memcached, CDN), and performance optimization creates a clear niche that is unlikely to conflict with other skills. The triggers are specific enough to distinguish from general performance or general caching skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
42%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The skill is well-organized with good progressive disclosure and a comprehensive error handling table, but critically lacks actionable, executable code—all implementation details are deferred to a reference file. The instructions read as a high-level design document rather than concrete guidance Claude can execute, and the workflow lacks validation checkpoints for what is a complex multi-step implementation.
Suggestions
Add at least one executable code example for the core cache-aside middleware pattern (e.g., a complete Express/Fastify middleware with Redis) instead of deferring everything to implementation.md.
Include concrete cache key generation code showing the deterministic key construction from method, path, sorted query params, and header hashing.
Add explicit validation checkpoints in the workflow, such as 'Verify cache hit/miss with a test request before proceeding to invalidation implementation' or 'Confirm Redis connectivity and key storage before building the full middleware chain.'
Replace the conceptual examples with executable snippets showing actual cache headers, Redis commands, or middleware configuration.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is moderately efficient but includes some unnecessary elaboration. The overview restates what the instructions cover, the prerequisites explain obvious things (e.g., 'required for multi-instance deployments'), and the examples section describes scenarios at a conceptual level rather than providing executable code. Some tightening is possible. | 2 / 3 |
Actionability | Despite listing 9 steps, the instructions are entirely descriptive and abstract—no executable code, no concrete commands, no copy-paste-ready snippets. The actual implementation is deferred to a reference file. Phrases like 'implement cache key generation middleware' and 'build a cache-aside middleware' describe what to do without showing how. | 1 / 3 |
Workflow Clarity | The steps are sequenced logically (analyze → implement key gen → middleware → TTL → invalidation → headers → stale-while-revalidate → warming → tests), but there are no explicit validation checkpoints or feedback loops. For a multi-step process involving cache invalidation and distributed systems, the absence of verification steps between stages is a notable gap. | 2 / 3 |
Progressive Disclosure | The skill is well-structured with clear sections (Overview, Prerequisites, Instructions, Output, Error Handling, Examples, Resources) and appropriately references external files (implementation.md, errors.md, examples.md) at one level deep with clear signaling. The output section clearly lists expected file artifacts. | 3 / 3 |
Total | 8 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
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