sinatra-project-starter

Scaffold a production-ready Sinatra 4.x API with Ruby 3.3+, modular application style, Rack middleware, Sequel for database access, Puma web server, and structured project layout.

Quality

72%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Advisory

Suggest reviewing before use

Fix and improve this skill with Tessl

tessl review fix ./backend-ruby/sinatra-project-starter/SKILL.md

Quality

Content

77%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is a strong, highly actionable skill for scaffolding Sinatra APIs with complete, executable code examples covering all major components. The workflow is clear and the structure is logical. However, the skill is verbose for a SKILL.md file and would benefit from splitting detailed patterns into separate reference files, keeping the main skill as a concise overview with links.

Suggestions

Extract the Essential Patterns section (middleware, routes, models, services, serializers) into a separate PATTERNS.md file and reference it from the main skill

Trim explanatory comments in code blocks (e.g., '# PostgreSQL adapter', '# Service objects') that Claude can infer from context

Move Integration Notes to a separate INTEGRATIONS.md file, keeping only the most critical notes inline

Dimension	Reasoning	Score
Conciseness	The skill is comprehensive but includes some unnecessary verbosity. Comments like '# PostgreSQL adapter' and explanations of why Sequel is preferred over ActiveRecord could be trimmed. The Integration Notes section contains some redundant context Claude would already know.	2 / 3
Actionability	Excellent actionability with fully executable, copy-paste ready code throughout. Every component (routes, models, middleware, services, serializers, migrations) has complete, working examples. Commands are specific and immediately usable.	3 / 3
Workflow Clarity	Clear sequential workflow in 'First Steps After Scaffold' section with numbered steps. The scaffold command section provides explicit ordering. Common Commands section provides clear reference for ongoing operations. Validation is implicit through the health check step.	3 / 3
Progressive Disclosure	Content is well-organized with clear sections, but the skill is monolithic at ~400 lines. The Essential Patterns section could be split into separate reference files. No external file references are provided for advanced topics like testing setup or Docker configuration.	2 / 3
	Total	10 / 12 Passed

Description

67%

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 excels at specificity and distinctiveness by naming exact technologies and versions, making it clearly identifiable for Sinatra API scaffolding tasks. However, it lacks an explicit 'Use when...' clause and could benefit from more natural trigger terms that users might say when requesting this type of project setup.

Suggestions

Add a 'Use when...' clause with trigger phrases like 'Use when creating a new Sinatra project, setting up a Ruby API, or scaffolding a lightweight web service.'

Include natural language variations users might say: 'Ruby web app', 'REST API', 'microservice', 'lightweight backend', 'new Sinatra app'.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions and technologies: 'Scaffold a production-ready Sinatra 4.x API' with specific components including 'Ruby 3.3+, modular application style, Rack middleware, Sequel for database access, Puma web server, and structured project layout.'	3 / 3
Completeness	Clearly answers 'what' (scaffold a Sinatra API with specific stack), but lacks an explicit 'Use when...' clause or trigger guidance. The 'when' is only implied by the action verb 'Scaffold'.	2 / 3
Trigger Term Quality	Includes relevant technical terms like 'Sinatra', 'Ruby', 'API', 'Puma', 'Sequel', 'Rack middleware' that developers would use, but missing common variations like 'web app', 'REST API', 'backend', or 'microservice' that users might naturally say.	2 / 3
Distinctiveness Conflict Risk	Highly distinctive with specific technology stack (Sinatra 4.x, Ruby 3.3+, Sequel, Puma). Unlikely to conflict with Rails, Flask, or other web framework skills due to explicit Sinatra focus.	3 / 3
	Total	10 / 12 Passed

Validation

81%

Warnings & errors only

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
skill_md_line_count	SKILL.md is long (515 lines); consider splitting into references/ and linking	Warning
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	9 / 11 Passed

Repository: achreftlili/deep-dev-skills
Commit: 181fcbc

Reviewed: 4 months ago

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