Vibe Coder MCP

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

With no annotations provided, the description carries the full burden. It discloses that the tool retrieves summaries (implying read-only behavior) and specifies the scope (staged vs. unstaged changes). However, it lacks details on permissions, rate limits, or output format, leaving gaps in behavioral 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 two concise sentences with zero waste, front-loaded with the main purpose. Every word earns its place by clarifying the tool's function and parameter context efficiently.

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 low complexity (1 parameter, no output schema, no annotations), the description is adequate but incomplete. It covers the basic purpose and parameter scope, but lacks details on output format or behavioral traits like error handling, which could be important for an AI agent.

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 100% description coverage, so the schema already fully documents the 'staged' parameter. The description adds marginal value by mentioning 'staged or unstaged changes,' but doesn't provide additional syntax or format details beyond what the schema states.

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 verb ('retrieves') and resource ('summary of current Git changes'), specifying it's about diff information. It distinguishes between staged and unstaged changes, though it doesn't explicitly differentiate from sibling tools like 'generate-task-list' or 'process-request' which might also involve Git operations.

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 implies usage by mentioning 'staged or unstaged changes,' which suggests when to use it based on the type of changes needed. However, it doesn't provide explicit guidance on when to choose this tool over alternatives like 'generate-task-list' for Git-related tasks or any exclusions.

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