Get Fitbit OAuth URL

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

The description is consistent with annotations (readOnlyHint=true, idempotentHint=true) but adds no behavioral context beyond what annotations already convey. Since annotations carry the transparency burden, the description meets the baseline without contradiction.

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 sentences, each serving a purpose: one states the action, the other gives usage guidance. There is no wasted text, making it concise and well-structured.

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 OAuth URL generation tool with an output schema and clear annotations, the description provides the essential starting point. It lacks details about the OAuth flow (e.g., user interaction), but the sibling tools and schema compensate for this simplicity.

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 67% (2 of 3 parameters have descriptions). The description does not add any additional parameter-level information, so it meets the baseline for high coverage without improvement.

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 'Generate' and the resource 'Fitbit OAuth authorization URL', making the action unambiguous. It also provides a usage hint 'Use this first when no local token exists', which helps distinguish this tool from downstream tools like fitbit_exchange_code.

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 explicitly says to use this tool first when no token exists, providing clear context. However, it does not explicitly state when not to use it (e.g., if a token already exists) or name alternative tools, though the sibling context implies the next step.

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