Show Media Stats by Date

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

Annotations already establish read-only, idempotent, open-world, non-destructive behavior, so the bar is lower. The description adds real value beyond them by disclosing the required API token permission ('Read detailed stats') and the delegation-scope alternative. It still omits return format and any pagination/limit behavior.

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 core behavior is front-loaded in the first sentence, then the auth requirements are grouped into a clearly demarcated block. There is minor redundancy (the 'Read-only account operation' trailing line) and a typo ('paramater'), but no wasted bulk.

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?

With no output schema and no description of the returned stats shape (visitor counts, plays, engagement?), the agent cannot anticipate the response. Annotations and the auth block cover safety and permissions, but return-value context is the notable gap.

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 100%, so the baseline is 3, and the description earns an extra point by documenting default semantics for start_date/end_date (defaults to yesterday and today) that the schema does not state. The 'account' parameter's credential-selection behavior is left entirely to the schema.

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 gives a specific verb+resource+scope: retrieve stats for a media, organized by day, within an inclusive start/end range. That is enough to distinguish it from aggregate siblings like get_media_stats, but it never names or contrasts with those siblings 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?

Usage is implied by the 'by day' framing and the default window ('defaults to yesterday and today'), which tells the agent what happens when dates are omitted. However, there is no explicit when-to-use-this vs get_media_stats / get_media_stats_stats_media guidance despite many near-neighbor stats tools.

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