excalidraw

Generate hand-drawn style diagrams, flowcharts, and architecture diagrams as PNG images from Excalidraw JSON

Quality

77%

Does it follow best practices?

Impact

Pending

No eval scenarios have been run

Securityby

Passed

No known issues

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npx tessl skill review --optimize ./public/skills/a-anand-91119/excalidraw/SKILL.md

Quality

Discovery

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 clearly identifying the Excalidraw-based hand-drawn diagram generation capability. However, it lacks explicit trigger guidance ('Use when...') which limits Claude's ability to know when to select this skill, and could benefit from additional natural trigger terms users might use.

Suggestions

Add a 'Use when...' clause with trigger scenarios like 'Use when the user asks for hand-drawn diagrams, whiteboard-style visuals, or mentions Excalidraw'

Include additional natural trigger terms users might say: 'sketch', 'whiteboard', 'hand-drawn', '.excalidraw', 'rough diagram'

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions: 'hand-drawn style diagrams, flowcharts, and architecture diagrams' with specific output format 'PNG images' and input format 'Excalidraw JSON'.	3 / 3
Completeness	Clearly answers 'what' (generate diagrams as PNG from Excalidraw JSON) but lacks an explicit 'Use when...' clause to guide Claude on when to select this skill.	2 / 3
Trigger Term Quality	Includes good terms like 'diagrams', 'flowcharts', 'architecture diagrams', 'Excalidraw', and 'PNG', but missing common variations users might say like 'sketch', 'whiteboard style', 'visual', or file extensions like '.excalidraw'.	2 / 3
Distinctiveness Conflict Risk	Very distinct niche combining 'Excalidraw', 'hand-drawn style', and specific diagram types - unlikely to conflict with generic diagramming or image generation skills.	3 / 3
	Total	10 / 12 Passed

Implementation

87%

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

This is a well-crafted skill with excellent conciseness and actionability. The JSON templates and element reference tables are immediately usable. The main weakness is the workflow section, which lacks validation steps and error handling guidance for a multi-step process involving file generation and external script execution.

Suggestions

Add a validation step after rendering (e.g., 'Verify PNG was created: check file exists and size > 0')

Include error handling guidance: what to do if render.js fails, common JSON syntax errors to watch for

Consider adding a 'Troubleshooting' section for common issues like missing dependencies or malformed JSON

Dimension	Reasoning	Score
Conciseness	The content is lean and efficient, using tables and code blocks to convey information densely. No unnecessary explanations of concepts Claude would already know—it jumps straight to actionable specifications.	3 / 3
Actionability	Provides fully executable JSON examples, complete templates, and copy-paste ready code. The flowchart template is a complete working example that can be used immediately.	3 / 3
Workflow Clarity	The 4-step workflow is clearly listed, but lacks validation checkpoints. There's no guidance on what to do if rendering fails, no verification step to check the output PNG, and no error recovery instructions for a process that could fail at multiple points.	2 / 3
Progressive Disclosure	Content is well-organized with clear sections (Workflow, Quick Reference, Element Types, Templates, Guidelines, Tips). For a skill of this size, the single-file structure with logical sections is appropriate and easy to navigate.	3 / 3
	Total	11 / 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: Demerzels-lab/elsamultiskillagent
Commit: 45f9fac

Reviewed: 27 days ago

Table of Contents

Discovery Implementation Validation

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