Draw.io Diagram Server
Server Quality Checklist
Latest release: v1.0.1
- Disambiguation5/5
With only one tool, there is no possibility of confusion between tools. The tool's purpose is clearly defined as creating diagrams of various types.
Naming Consistency5/5The single tool name 'create_diagram' follows a clear verb_noun pattern. Consistency is inherent with one tool.
Tool Count2/5A single tool for diagram creation is too few; the scope implies needs like listing, editing, or exporting diagrams. This falls into the 'too few' category.
Completeness1/5Only creation is covered, with no tools for reading, updating, deleting, or managing diagrams. The surface is severely incomplete for a diagram server.
Average 3.3/5 across 1 of 1 tools scored.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 0 commits in the last 12 weeks
- Last stable release on
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
This repository is licensed under MIT License.
This repository includes a README.md file.
No tool usage detected in the last 30 days. Usage tracking helps demonstrate server value.
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How is the quality score calculated?
The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).
Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.
Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).
Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.
Tool Scores
- Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must fully convey behavioral traits. It only states 'create' and 'save to a file', but fails to disclose side effects (e.g., file overwrite behavior), required permissions, error handling, or success/failure indicators. This is insufficient for a write operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence that efficiently conveys the tool's purpose and key differentiator (various diagram types). No superfluous words; every part contributes to understanding.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (3 params, nested objects, no output schema), the description is somewhat lacking. It does not explain return values, error conditions, or whether the file is created/overwritten. However, the missing details are partially compensated by the schema descriptions. Overall adequate but not fully complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already describes each parameter adequately. The description adds little beyond grouping the concept, stating that data structure depends on type. This meets the baseline but does not significantly enhance understanding beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool creates various types of diagrams (flowchart, sequence, etc.) and saves to a file. It uses specific verb ('Create') and resource ('diagrams'), and includes examples of types. While it adequately conveys the purpose, it could be more explicit about the output file format, which is partially covered in the parameter schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use this tool versus alternatives (no siblings). The description implies usage for diagram creation, but lacks context such as when it is appropriate (e.g., generating visual documentation) and does not mention prerequisites or constraints.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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- Evaluate tool definition quality.
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