Google Chat MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool gets an IP address but doesn't explain how it works (e.g., via an API call to outian.net), what the response format is, potential rate limits, or error handling. This leaves significant gaps in understanding the tool's behavior and reliability.

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 with a single sentence, 'Get IP address from outian.net', which is front-loaded and wastes no words. It efficiently communicates the core function without unnecessary details, making it easy to scan and understand quickly.

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 (simple but with an undocumented parameter), lack of annotations, no output schema, and low schema coverage, the description is incomplete. It doesn't explain what the tool returns, how the parameter affects the result, or any behavioral aspects, making it inadequate for effective use without additional guesswork or documentation.

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 1 parameter ('city') with 0% description coverage, and the tool description doesn't mention any parameters. This fails to compensate for the lack of schema documentation, leaving the parameter's purpose (e.g., whether it filters by city or something else) unexplained and potentially confusing for users.

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 states the tool's purpose as 'Get IP address from outian.net', which includes a verb ('Get') and resource ('IP address'), but is vague about what specific IP address is retrieved (e.g., user's current IP, IP for a city). It doesn't distinguish from sibling tools like 'fetch_weather' or 'get_chat_spaces', which are unrelated, but the purpose is clear enough to understand the basic function.

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 any context, prerequisites, or exclusions, such as whether it's for geolocation, network diagnostics, or other use cases. Without this, users must infer usage from the tool name and parameters alone.

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