rails-engine-installers
Use when creating install generators, copied migrations, or initializer installers for Rails engines. Covers idempotent setup tasks, host-app onboarding, and route mount setup.
79
73%
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 ./rails-engine-installers/SKILL.mdQuality
Discovery
75%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description is well-structured with an explicit 'Use when' clause and covers a distinct niche (Rails engine install generators). Its main weakness is that the specific actions could be more concrete and the trigger terms could include more natural variations that developers might use. The technical terminology is appropriate for the audience but slightly limits accessibility.
Suggestions
Add more natural trigger term variations such as 'mountable engine', 'engine setup', 'gem install generator', or 'rails plugin installation'.
Make the capabilities more concrete by specifying actions like 'generates install rake tasks', 'copies migration files to host app', 'creates initializer configuration files'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Rails engines) and some actions (install generators, copied migrations, initializer installers, route mount setup), but the actions are somewhat jargon-heavy and could be more concrete about what specific operations are performed. | 2 / 3 |
Completeness | Explicitly answers both 'what' (creating install generators, copied migrations, initializer installers, idempotent setup tasks, host-app onboarding, route mount setup) and 'when' (starts with 'Use when...' clause with clear trigger conditions). | 3 / 3 |
Trigger Term Quality | Includes relevant technical terms like 'install generators', 'migrations', 'initializer', 'Rails engines', and 'route mount' that a Rails developer would use, but misses common variations like 'engine setup', 'gem installation', 'mountable engine', or 'rails plugin'. | 2 / 3 |
Distinctiveness Conflict Risk | Clearly scoped to Rails engine installation/setup generators, which is a distinct niche unlikely to conflict with general Rails development skills or other generator-related skills. | 3 / 3 |
Total | 10 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a solid, well-organized skill with strong actionability through executable code examples and clear tables. Its main weakness is redundancy across sections — idempotency and 'don't mutate at boot time' are repeated in Primary Goals, Rules, Common Mistakes, Red Flags, and the Generator Checklist. The workflow could benefit from explicit validation steps given that generators modify host applications.
Suggestions
Consolidate overlapping content: merge 'Primary Goals,' 'Rules,' 'Red Flags,' and 'Common Mistakes' into fewer sections to eliminate the 5+ repetitions of idempotency and boot-time mutation warnings.
Add an explicit validation workflow with feedback loop, e.g., 'Run generator → verify output files → if duplicates found, check idempotency guards → rerun to confirm safety.'
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient but has some redundancy — the 'Primary Goals,' 'Rules,' 'Red Flags,' and 'Common Mistakes' sections overlap significantly (e.g., idempotency is stated in at least 5 different places). The tables and checklist format help, but the repetition across sections inflates token count without adding new information. | 2 / 3 |
Actionability | The skill provides fully executable Ruby code for both the install generator and its test, with concrete patterns like `initializer_already_present?` checks and specific file paths. The generator checklist and output style section give clear, specific guidance on what to produce. | 3 / 3 |
Workflow Clarity | The 'Output Style' section provides a 3-step sequence, and the generator checklist covers verification points, but there are no explicit validation checkpoints or feedback loops for error recovery. For generators that modify host apps (a potentially destructive operation), the lack of a validate-then-proceed workflow is a gap. | 2 / 3 |
Progressive Disclosure | The content is well-structured with clear sections, tables for quick reference, and an Integration table pointing to related skills one level deep. The length is appropriate for inline content without needing external file references, and navigation is easy via section headers. | 3 / 3 |
Total | 10 / 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
- igmarin/rails-agent-skills
- Commit
ae8ea63
- Reviewed
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