Log Analyzer MCP

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

No annotations are provided, so the description carries the full burden. It mentions analyzing failures but doesn't disclose behavioral traits such as whether this is a read-only operation, if it requires specific permissions, what happens if no test run exists, or how results are structured. The description is minimal and lacks critical operational context.

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

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

The description is appropriately sized and front-loaded: the first sentence states the core purpose, followed by a brief parameter explanation. There's minimal waste, though it could be slightly more structured (e.g., separating usage notes).

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

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

Given the tool's moderate complexity (analyzing test runs), no annotations, and an output schema (which reduces need to explain return values), the description is partially complete. It covers the basic purpose and parameter but lacks context on when to use it, behavioral details, and differentiation from siblings, making it adequate but with clear gaps.

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

Does 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 adds meaning for the single parameter 'summary_only' by explaining it controls whether to 'return only a summary of the test results,' which clarifies its purpose beyond the schema's title. However, it doesn't cover other potential aspects like default behavior or interactions, leaving some gaps.

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

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

The description clearly states the tool's purpose: 'Analyze the most recent test run and provide detailed information about failures.' It specifies the verb ('analyze'), resource ('most recent test run'), and output focus ('detailed information about failures'). However, it doesn't explicitly differentiate from siblings like 'run_tests_*' tools, which might perform tests rather than analyze results.

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

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 doesn't mention prerequisites (e.g., whether a test run must exist), exclusions, or comparisons to sibling tools like 'create_coverage_report' or 'run_tests_*'. Usage is implied but not explicitly stated.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.