Get Half Marathon Training Context

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

Annotations include readOnlyHint=true, and the description adds behavioral details: return is compact/information-dense, date derivation logic, and inclusion of inactive weeks for real gap streaks. No contradictions with annotations.

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 concise at two sentences and adequately explains functionality. However, it could be slightly more structured, e.g., separating purpose from date logic.

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 has no parameters and a readOnlyHint, the description covers all necessary context: what it returns, date derivation, and week behavior. No output schema exists, but the description sufficiently explains the return value.

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?

There are zero parameters, so the description is not required to add parameter semantics. The baseline for 0 parameters is 4.

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 it returns 'compact, information-dense run/walk training context for the current training cycle', which is a specific verb+resource. It distinguishes from sibling tools like getActivities or getAthleteContext by focusing on half marathon training context.

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 usage context (for current training cycle) and explains date logic, but does not explicitly state when to use or when not to use compared to alternatives. No exclusions or alternative references are provided.

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