CGM quickstart

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

No annotations provided, so description carries full burden. It implies read-only behavior (returns a walkthrough), but does not explicitly state side effects, authentication needs, or data implications. Adequate but could be more explicit.

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?

Single sentence with concise, front-loaded description. Every word adds value, no redundancy.

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 simple tool with one optional parameter and no output schema, the description covers when to call and what it returns. However, missing parameter explanation and lack of output details leave some gaps, making it minimally complete.

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 0% and the tool description does not explain the 'client' parameter or how it personalizes the walkthrough. With only an enum list, the agent lacks guidance on parameter usage.

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 'returns' and the specific resource 'personalized 3-step walkthrough' with context 'mock mode to live mode'. It explicitly ties to user intent 'how do I connect my CGM', distinguishing it from sibling tools like cgm_authorize_url or cgm_glucose_now.

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 explicit instruction 'Call this first when the user asks...', giving clear usage context. While it doesn't mention when not to use or alternatives, the guidance is strong for an entry-point tool.

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