textual-builder

Build Text User Interface (TUI) applications using the Textual Python framework (v0.86.0+). Use when creating terminal-based applications, prototyping card games or interactive CLIs, or when the user mentions Textual, TUI, or terminal UI. Includes comprehensive reference documentation, card game starter template, and styling guides.

1.35x

Quality

78%

Does it follow best practices?

Impact

87%

1.35x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Fix and improve this skill with Tessl

tessl review fix ./textual-builder/SKILL.md

Quality

Content

57%

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

The skill's strongest aspect is its progressive disclosure structure, with excellent signposting to reference files including clear triggers for when to read each one. However, the workflows lack concrete validation steps and executable detail, and the content includes some unnecessary verbosity and generic advice that Claude doesn't need. The quick start code is good but the rest of the actionable content is thin.

Suggestions

Add concrete, executable code snippets to the Common Workflows sections instead of abstract step descriptions (e.g., show actual widget composition code for 'Add widgets' step)

Remove or significantly trim the Best Practices section - items like 'use type hints' and 'start simple' are things Claude already knows

Add a validation/testing step to workflows, such as running `textual run --dev app.py` to verify the app works after each major change

Trim the overview paragraph to remove explanatory content about what Textual is - Claude already knows this

Dimension	Reasoning	Score
Conciseness	The skill includes some unnecessary explanation (e.g., 'This skill helps you build sophisticated Text User Interfaces...', 'a Python framework for creating terminal and browser-based applications with a modern web-inspired API') and the best practices section states things Claude already knows (progressive development, type hints). However, the reference navigation section is useful and the quick start is reasonably lean.	2 / 3
Actionability	The quick start provides executable code and the card game template has concrete copy commands. However, the common workflows sections are vague step lists without concrete code (e.g., 'Design layout', 'Add widgets'), and the best practices are generic advice rather than specific, actionable guidance with examples.	2 / 3
Workflow Clarity	Workflows are listed as numbered steps but lack validation checkpoints, concrete commands at each step, and error recovery guidance. The 'Creating a New TUI App' workflow is essentially just 'read these reference files in order' rather than a true workflow with verification steps.	2 / 3
Progressive Disclosure	The skill excels at progressive disclosure with a clear overview, concise quick start, and well-signaled one-level-deep references to specific files (references/basics.md, widgets.md, etc.) with clear 'Read when' triggers and topic coverage summaries. Navigation is intuitive and content is appropriately split.	3 / 3
	Total	9 / 12 Passed

Description

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 identifies the specific technology (Textual Python framework v0.86.0+), lists concrete use cases, and includes an explicit 'Use when' clause with natural trigger terms. It is well-scoped, distinctive, and provides enough detail for Claude to confidently select it from a large pool of skills.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions and artifacts: 'Build Text User Interface (TUI) applications', 'prototyping card games or interactive CLIs', 'comprehensive reference documentation, card game starter template, and styling guides'. It names the specific framework (Textual), version, and included resources.	3 / 3
Completeness	Clearly answers both 'what' (build TUI applications using Textual Python framework, includes reference docs, card game template, styling guides) and 'when' (explicit 'Use when' clause covering terminal-based apps, card games, interactive CLIs, and specific trigger terms like Textual/TUI/terminal UI).	3 / 3
Trigger Term Quality	Includes strong natural trigger terms users would say: 'TUI', 'terminal-based applications', 'Textual', 'terminal UI', 'interactive CLIs', 'card games'. These cover multiple natural phrasings a user might use when requesting this type of work.	3 / 3
Distinctiveness Conflict Risk	Highly distinctive with a clear niche: Textual framework specifically, TUI applications, terminal UI. Unlikely to conflict with general Python skills or web UI skills due to the specific framework name, version, and terminal-focused domain.	3 / 3
	Total	12 / 12 Passed

Validation

100%

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 — 11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository: YPares/agent-skills
Commit: bc4c2ce

Reviewed: 9 days ago

Table of Contents

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