Code Review MCP

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

No annotations are provided, so the description carries full burden for behavioral disclosure. 'Run Playwright tests' gives no information about what happens during execution (e.g., whether it's destructive, requires specific permissions, has side effects, produces logs/reports, or handles errors). It fails to describe any behavioral traits beyond the basic action implied by the name.

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 extremely concise at just three words, with zero wasted language. It's front-loaded with the core action, though this brevity comes at the cost of being under-specified rather than truly informative.

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 complexity (testing execution with 2 parameters), absence of annotations, 0% schema description coverage, and no output schema, the description is completely inadequate. It doesn't explain what the tool returns, how parameters affect behavior, or any execution context, leaving critical gaps for an AI agent to understand and use the tool correctly.

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?

The input schema has 2 parameters (full, grep) with 0% description coverage, meaning the schema provides no semantic information. The description 'Run Playwright tests' adds no meaning about what these parameters do, their purposes, or how they affect test execution. It completely fails to compensate for the schema's lack of documentation.

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 'Run Playwright tests' is a tautology that essentially restates the tool name 'tests.run_playwright' and title 'Run Playwright'. It specifies the verb 'run' and resource 'Playwright tests', but doesn't distinguish this from potential sibling tools or provide any meaningful elaboration beyond what's already in the name/title.

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 no guidance on when to use this tool versus alternatives. It doesn't mention any context, prerequisites, or exclusions, nor does it reference any of the sibling tools (like analysis.run_static or security.run_semgrep) that might serve similar testing purposes. There's complete absence of usage direction.

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