MCP Python Server & Client
Server Quality Checklist
Latest release: v1.0.0
- Disambiguation5/5
Each tool has a unique domain: math, weather, and string operations. There is no overlap or ambiguity in their purposes.
Naming Consistency5/5All tools follow a consistent verb_noun pattern (calculate, get_weather, string_operation), making them predictable and easy to understand.
Tool Count4/5The server has only 3 tools, which is on the thin side but acceptable for a focused utility server. Each tool serves a distinct purpose.
Completeness4/5The tools cover basic math, weather, and string operations. Minor gaps exist (e.g., no advanced math or weather forecast details), but the set is sufficient for common tasks.
Average 4.1/5 across 3 of 3 tools scored.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 5 commits in the last 12 weeks
- No stable releases found
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
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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
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden. It mentions the return type (string) but does not disclose any behavioral traits like side effects, state changes, or error handling. As a pure string manipulation function, it is safe, but transparency is minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is structured as a docstring with Args and Returns sections, making it easy to parse. It is front-loaded with the purpose. Slightly verbose for the simple nature of the tool, but acceptable.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations and no schema descriptions, the description covers the purpose, all parameters, and return value. It is fairly complete for a pure function tool. Missing context: behavior with invalid operations and potential errors.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It explains the 'operation' parameter with enumerated values, 'text' as input, and 'extra' with usage for replace (replacement text) and truncate (max length). This adds significant meaning beyond the schema. However, it could clarify that 'extra' is ignored for other operations.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it performs string manipulation operations and lists specific operations like reverse, count_words, etc. It is a specific verb+resource that distinguishes from sibling tools (calculate, get_weather) which are unrelated.
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?
The description lists available operations and explains parameters, providing implied usage context. However, it does not explicitly state when to use this tool vs alternatives or provide conditions for use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It specifies operations, parameter roles (a, b, operation), and return type (string). Missing details on error handling or edge cases, but adequate for a calculator.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5Is the description appropriately sized, front-loaded, and free of redundancy?
Reasonably concise with clear docstring format. Each sentence adds value, though could be slightly more streamlined.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool is simple; description covers parameters and return. No output schema details needed as description already states return type. Adequate for its complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but the description compensates fully by explaining each parameter's role: operation as math operation, a as first number, b as second number (with note for sqrt). Adds meaning beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states it performs mathematical calculations, lists supported operations, and clearly distinguishes from siblings like get_weather and string_operation.
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 or when not to use it. Sibling tools are unrelated, but usage context is not addressed.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It states the return is a formatted string, but does not disclose potential side effects, required authentication, rate limits, or caching behavior. For a simple read operation this is acceptable but could be improved.
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 extremely concise with no wasted words. It uses a clear structure with Args and Returns sections, front-loading the core purpose. Every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple with two parameters and an existing output schema. The description covers the main functionality and return format. Minor omissions like units or timezone could be added, but the description is largely complete for an agent to use correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, but the description adds thorough meaning: 'city' is clearly defined as the city name, and 'forecast_days' includes its purpose, default behavior (0 for current weather), and maximum value (7). This exceeds what the schema provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states it gets current weather or forecast for a city, providing a specific verb and resource. It is clearly distinct from sibling tools (calculate, string_operation) which have no weather-related functionality.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description clearly indicates when to use the tool (to get weather information) and the parameters control current vs forecast. While it does not explicitly state when not to use it, the context is straightforward and alternatives are unnecessary given the distinct sibling tools.
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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