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, health checks, batch processing, or any task that should run every N seconds, minutes, hours, or on a weekly/monthly calendar.
80
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 an excellent skill description that clearly communicates what the skill does (registers cron triggers with 7-field expressions), when to use it (with an explicit and comprehensive 'Use when...' clause), and includes a rich set of natural trigger terms spanning both technical and user-friendly language. It occupies a clear, distinct niche that minimizes conflict risk with other skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists concrete actions: 'Registers cron triggers with 7-field expressions to run functions on recurring schedules.' It specifies the mechanism (cron triggers, 7-field expressions) and enumerates multiple use cases (cleanup routines, report generation, health checks, 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 scheduling periodic jobs, timed automation, crontab replacements, and several other trigger scenarios). | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: 'cron', 'scheduling', 'periodic jobs', 'timed automation', 'crontab', 'cleanup routines', 'report generation', 'health checks', 'batch processing', 'every N seconds/minutes/hours', 'weekly/monthly'. These are highly natural keywords spanning both technical and colloquial phrasing. | 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 like general automation or task management. | 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.
The skill is well-structured with clear sections, good use of references, and appropriate pattern boundaries. Its main weaknesses are the lack of inline executable code (relying entirely on external references that can't be verified), missing validation/verification steps for cron expression correctness, and some unnecessary meta-sections that pad the content without adding value.
Suggestions
Add a complete, inline executable code example (quick-start) showing a minimal cron job registration rather than deferring all code to reference files.
Add a validation step: how to verify a cron expression is correct and that the trigger registered successfully (e.g., expected log output or a test command).
Remove or significantly trim the 'When to Use' and 'Boundaries' sections — these are generic meta-instructions that don't add skill-specific value and waste tokens.
Include at least a small table of common cron expression examples (every minute, hourly, daily at 9am, weekly) to make the 7-field format immediately actionable.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient but includes some unnecessary sections like 'When to Use' and 'Boundaries' that repeat obvious meta-instructions Claude doesn't need. The 'Key Concepts' section has some filler (e.g., explaining that overlapping schedules fire independently). The ASCII architecture diagram is a nice touch but the overall content could be tightened. | 2 / 3 |
Actionability | The skill provides API patterns and common code snippets (registerFunction, registerTrigger, etc.) but lacks complete executable code examples inline — it defers entirely to reference files. The 'Common Patterns' section lists function signatures but doesn't show a complete, copy-paste-ready implementation. Without bundle files to verify, the referenced implementations can't compensate. | 2 / 3 |
Workflow Clarity | The architecture diagram provides a clear sequence, and the 'Adapting This Pattern' section gives useful guidance. However, there are no explicit validation checkpoints — no step to verify the cron expression is valid, no verification that the trigger registered successfully, and no error recovery guidance. For a scheduling system where misconfigured expressions could silently fail, this is a gap. | 2 / 3 |
Progressive Disclosure | References to external files (JS, Python, Rust implementations, config YAML) are clearly signaled and one level deep, which is good. However, no bundle files were provided, so we cannot verify these references actually exist. The inline content is reasonably structured with clear sections, but the 'Common Patterns' section contains detail that might belong in a reference file, while the main file lacks the executable quick-start example that should be inline. | 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
d51a06d
- Reviewed
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