TestRail MCP Server

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

No annotations are provided, so the description must carry the full burden. It fails to disclose pagination behavior (despite limit/offset parameters), filtering capabilities (statusId/defectsFilter), or error handling. It only states the basic retrieval action.

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?

Extremely concise with no wasted words. The English sentence is front-loaded with the verb and purpose. However, given the tool's complexity (5 parameters including pagination and filtering), it is arguably underspecified rather than efficiently concise.

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?

With no output schema and no annotations, the description should explain what constitutes a 'result', mention pagination support, or describe filtering behavior. The current single-sentence description is inadequate for a 5-parameter retrieval tool with filtering capabilities.

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 100%, establishing a baseline of 3. The description adds no explicit parameter semantics, but the phrase 'for a specific test' implicitly references the required testId parameter without adding syntax or usage details beyond the schema.

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?

States a specific action (Retrieves) and resource (test results) scoped to 'a specific test'. However, it does not explicitly distinguish from siblings like getResultsForCase or getResultsForRun, which also retrieve results but by different entity types.

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?

Provides no guidance on when to use this tool versus the related getResultsForCase or getResultsForRun tools, nor does it mention prerequisites like the testId requirement (though implied by 'specific test').

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