Debugging MCP Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It successfully describes key behavioral traits: the auto-detection capability, the safety gate mechanism requiring confirmation, and the fact that it executes tests. It doesn't mention rate limits, authentication needs, or what happens on failure, but provides substantial 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 perfectly concise with just two sentences that each earn their place. The first sentence establishes the core purpose, and the second adds crucial safety information. No wasted words, and the most important information (the safety requirement) is appropriately emphasized.

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?

For a tool with 3 parameters, no annotations, and no output schema, the description provides adequate but incomplete context. It covers the main purpose and safety mechanism well, but doesn't explain what the tool returns, how errors are handled, or provide guidance on when to use command overrides versus auto-detection. Given the complexity, more completeness would be beneficial.

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?

With 100% schema description coverage, the baseline is 3. The description adds some value by emphasizing the critical safety requirement for the 'confirm' parameter ('MUST be set to true to actually execute'), but doesn't provide additional meaning beyond what's already documented in the schema descriptions for the other parameters.

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 specific action ('Executes') and resource ('workspace's test suite'), and distinguishes from siblings by specifying it's about running tests rather than debugging, connecting, or searching. It goes beyond just restating the name/title by adding context about auto-detection.

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?

The description provides clear context about when to use this tool (to run tests in the workspace) and includes an important safety requirement (confirm flag must be true). However, it doesn't explicitly state when NOT to use it or mention alternatives among the sibling tools, which prevents a perfect score.

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