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

The description adds substantial context beyond the read-only annotations: it discloses sorting by views, lifetime counters, saved watch metrics, capture/check times, availability, lineage, and what includeDetails adds. It also clearly scopes out write-like behaviors like importing data or starting monitoring.

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 dense but front-loaded: it states the core read operation first, then filters, return content, includeDetails behavior, and exclusions. Every sentence carries relevant information, though the phrase 'bounded existing provider-reported engagement' is slightly jargon-heavy.

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 rich annotations and an output schema, and the description covers the return shape, lineage, and non-goals well. The remaining gap is that several required filter and pagination parameters are not semantically explained in the description.

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?

With 0% schema description coverage across 9 required parameters, the description compensates for some filters: format, account, publication window, workspace selection, and includeDetails behavior. However, it leaves platform, search, limit, and offset unexplained, which are meaningful gaps for an agent constructing a request.

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 states a specific verb and resource: reading existing provider-reported engagement in a selected workspace, sorted by views. It clearly establishes the scope as published content performance rather than content creation, import, or monitoring.

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 gives useful exclusions: it does not import new data, start monitoring, or infer attributable leads, sales, or revenue. It does not name a specific alternative tool, so the routing guidance is clear but not fully explicit.

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