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justinmclean

Apache Health MCP

by justinmclean

get_window_metrics

Retrieve specific metrics for Apache Incubator podlings within defined time windows to analyze project health and track progress.

Instructions

Return metrics for a single podling/window combination.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden but only states what the tool returns without behavioral details. It doesn't disclose whether this is a read-only operation, potential errors, rate limits, or authentication needs, leaving significant gaps for a tool that likely queries metrics.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that directly states the tool's purpose with no wasted words. It is appropriately sized and front-loaded, making it easy to understand quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 0 parameters and no output schema, the description is minimally adequate but lacks completeness. It doesn't explain what metrics are returned, their format, or error handling, which are important for a metrics query tool with no structured output documentation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description adds value by specifying that metrics are for a 'single podling/window combination', which clarifies the scope beyond what the empty schema provides, justifying a score above the baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Return' and the resource 'metrics for a single podling/window combination', making the purpose specific and understandable. It doesn't explicitly distinguish from siblings like 'list_metrics' or 'query_metric_rankings', but the focus on a single combination provides some implicit differentiation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. The description implies it's for a specific podling/window pair, but it doesn't mention prerequisites, when not to use it, or refer to sibling tools like 'list_metrics' for broader queries.

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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