get_training_readiness

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so 'read-only' adds nothing new. The description says nothing about what happens for dates with no readiness data (error vs empty), whether historical dates are supported, or any rate/account requirements — despite openWorldHint=true implying live remote calls.

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?

Front-loaded with purpose in the first clause, which is good, but the three-word date format is restated twice more ('YYYY-MM-DD' and 'Dates are YYYY-MM-DD'), so the parenthetical is largely waste rather than value.

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?

The tool has one required parameter and an output schema, so return-shape explanation is unnecessary. The description covers purpose, source, and input format adequately; only the relationship to sibling readiness/status tools is left unaddressed.

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 coverage is 0%, so the description must carry the parameter — and it does supply the essential YYYY-MM-DD format for 'cdate'. However it repeats the format three times while omitting equally useful details such as timezone handling or whether the date may be in the future.

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?

States a specific verb ('Return') and a specific resource ('training readiness data'), and the parenthetical identifies the data source (Garmin Connect). It is distinguishable from siblings like get_training_status or get_max_metrics by the resource name, though it never draws that contrast explicitly.

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?

There is no when-to-use guidance and no mention of the adjacent tools (get_training_status, get_max_metrics, get_race_predictions) that an agent might confuse this with. The only implied context is that a single date is queried.

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