iii-cron-scheduling
Registers cron triggers with 7-field expressions to run functions on recurring schedules. Use when scheduling periodic jobs, timed automation, crontab replacements, cleanup routines, report generation, batch processing, or calendar-based work that is genuinely time-driven.
64
75%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/iii-cron-scheduling/SKILL.mdQuality
Discovery
100%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 (registers cron triggers with 7-field expressions), when to use it (with an explicit 'Use when...' clause covering multiple natural trigger scenarios), and includes a helpful boundary qualifier ('genuinely time-driven') to reduce false matches. The description is concise, uses third person voice, and provides excellent trigger term coverage.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists specific concrete actions: 'Registers cron triggers with 7-field expressions to run functions on recurring schedules.' Also enumerates concrete use cases like cleanup routines, report generation, batch processing. | 3 / 3 |
Completeness | Clearly answers both 'what' (registers cron triggers with 7-field expressions to run functions on recurring schedules) and 'when' (explicit 'Use when...' clause listing multiple trigger scenarios). The qualifier 'genuinely time-driven' further clarifies when to use it. | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: 'cron', 'scheduling', 'periodic jobs', 'timed automation', 'crontab', 'cleanup routines', 'report generation', 'batch processing', 'calendar-based'. These are terms users would naturally use when needing this functionality. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with a clear niche: cron-based scheduling with 7-field expressions. The specificity of 'cron triggers', '7-field expressions', and 'crontab replacements' makes it very unlikely to conflict with other skills. The 'genuinely time-driven' qualifier further narrows scope. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
50%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill provides a reasonable overview of cron scheduling with the iii engine, with good structural elements like the primitives table, architecture diagram, and pattern boundaries. However, it lacks inline executable code examples (delegating entirely to missing reference files), has no explicit step-by-step setup workflow with validation, and includes some redundant boilerplate sections that consume tokens without adding value.
Suggestions
Add a minimal inline code example (e.g., a 10-line working cron job) so the skill is actionable even without the reference files.
Replace the implicit architecture diagram with an explicit numbered workflow: 1) Install iii-cron, 2) Define handler with registerFunction, 3) Bind schedule with registerTrigger, 4) Verify with a test run or log check.
Remove or consolidate the 'When to Use' and 'Boundaries' sections — these are generic boilerplate that Claude doesn't need repeated in the body.
Provide the referenced bundle files (cron-scheduling.js, etc.) or inline the essential code so the skill is self-contained.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is mostly efficient but includes some redundancy — the 'When to Use' and 'Boundaries' sections at the bottom repeat generic boilerplate that doesn't add value. The 'Common Patterns' section partially duplicates the 'iii Primitives Used' table. The ASCII architecture diagram is a nice touch but the overall content could be tightened. | 2 / 3 |
Actionability | The skill provides concrete API patterns and a primitives table, but delegates all executable code to reference files rather than including inline examples. There's no copy-paste-ready code snippet showing a minimal working cron job — just API signatures and references to external files that weren't provided in the bundle. | 2 / 3 |
Workflow Clarity | The architecture diagram shows the flow and the 'Adapting This Pattern' section gives useful guidance, but there's no explicit step-by-step workflow for setting up a cron job (install → define handler → register trigger → verify it fires). No validation or verification steps are mentioned for confirming the cron is working correctly. | 2 / 3 |
Progressive Disclosure | References to external files (cron-scheduling.js, .py, .rs, iii-config.yaml) are well-signaled and one level deep, which is good structure. However, no bundle files were provided, so the references point to non-existent resources. The SKILL.md itself also includes content that could be more concisely organized — the Pattern Boundaries and Boundaries sections feel like they belong in metadata rather than the body. | 2 / 3 |
Total | 8 / 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
- iii-hq/iii
- Commit
a7ebbbb
- Reviewed
Table of Contents
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