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

Annotations already cover the safety profile (readOnlyHint, openWorldHint), and the description adds a genuinely useful data-completeness caveat: older news stubs may have only a title and date, so the body can be empty. That tells the agent to expect partial records rather than treat an empty body as an error. It stops short of richer detail like pagination or auth, but the empty-body warning is meaningful added context.

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 tight sentences: purpose and return shape first, then the edge-case caveat. Every clause carries information and nothing is redundant or buried.

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?

For a one-parameter read tool with full schema coverage, existing output schema, and safety annotations, the description supplies exactly the missing pieces: what the resource is, what fields come back, and the partial-record caveat. Nothing an agent needs to call it correctly is absent.

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 description coverage is 100% and the single parameter is fully documented in the schema itself ('Newsroom slug from greystar_newsroom'). The description's 'by slug' phrasing adds nothing beyond the schema, so the baseline of 3 is appropriate.

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 ('Get') and a precisely scoped resource ('one Greystar newsroom release by slug'), which distinguishes it from the list-style sibling greystar_newsroom without needing to name it. An agent can immediately tell this is a single-item fetch keyed by slug.

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 only implied: the description says it fetches one release by slug, and the schema notes the slug comes from greystar_newsroom, so the retrieval flow is inferable. There is no explicit when-to-use statement or named alternative (e.g., greystar_articles vs greystar_newsroom) to disambiguate.

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