get_inprogress_virtual_challenges

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

With no annotations, the description carries the behavioral burden. It discloses pagination behavior (defaults and max limit) and a critical edge case: garminconnect 0.3.2 rejects start=0. It doesn't discuss authentication or rate limits, but for a simple read endpoint the provided behavioral details are substantive and useful.

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 tight and front-loaded: a one-line summary, a clarifying sentence, and a terse Args block. Every sentence earns its place, including the version-specific warning about start=0. No fluff or repetition.

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 read-only tool with two optional parameters and an output schema, the description is complete. It defines the resource scope, thoroughly documents both parameters, and surfaces a client-specific constraint. Nothing an agent needs to invoke it correctly is missing.

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%, so the description must compensate. It fully explains both parameters: 'start' as a pagination index with a minimum and a version-specific caveat, and 'limit' with a default and maximum. This adds far more meaning than the bare integer schema provides.

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 uses a specific verb ('Get') and a distinct resource ('in-progress virtual challenges/expeditions'), further clarified by the example of walking expeditions on famous trails. This clearly distinguishes it from sibling tools like get_badge_challenges or get_adhoc_challenges by focusing on the user's currently participating virtual challenges.

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 when to use it—when you need virtual challenges the user is currently participating in—but it does not explicitly contrast with alternatives or state when not to use it. An agent has to infer the routing from the resource name and definition rather than being told.

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