List latest cycling activities

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

With no annotations, the description carries the burden and uses it well: it explicitly declares the operation read-only and discloses two behaviors—deduplicating Intervals summaries and optionally flagging multisport parents. It does not describe output shape or pagination, but the safety/side-effect profile is clear.

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?

Two compact sentences with the main verb first, no filler. Each clause adds useful information: source, dedupe behavior, multisport option, safety, and prerequisite.

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?

Complete enough for a read-only listing tool, but gaps remain: no output schema, no explanation of what 'latest' means or how startDate/endDate interact with it, and no stated default limit behavior. The explicit read-only and prerequisite help, but an agent still has to guess some invocation semantics.

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 description adds meaning for athleteId (must come from list_athletes) and includeMultisport (flag multisport parent records), but gives no explicit semantics for limit, startDate, or endDate. With 0% schema description coverage this is a clear gap, though the remaining parameter names are reasonably self-explanatory.

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 names a concrete verb and resource ('List Garmin cycling source records') and adds distinguishing details: it excludes duplicate Intervals summaries and can flag multisport parent records. This separates it from generic activity-search siblings like find_activities and cycling_progress_report.

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?

It states clear usage context and a prerequisite ('Read-only. Requires athleteId from list_athletes'), telling the agent to obtain an athlete ID first. It does not explicitly name when-not-to-use or alternative tools, so it stops short of full routing guidance.

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