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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds real value by naming what comes back (member count, filters, member animals) since there is no output schema, but it doesn't clarify what 'filters' means or whether the member animal list is paginated or truncated.

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 short sentences, front-loaded with the payload description; the trailing REST path costs a few tokens but helps API-oriented agents map to the underlying endpoint. No redundancy.

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 single-parameter read-only getter with full schema coverage and no output schema, the description covers what it returns and what identifies the resource. Only the shape/size of the returned member animals is left unspecified.

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% and the single parameter group_id is fully documented in the schema, including its id-string format and pattern. The description adds only the phrase 'by id', so baseline 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+resource ('One livestock group by id') and discloses the payload shape (member count, filters, member animals), which separates it from farmbrite_list_livestock_groups. It stops short of naming the list sibling explicitly, so the agent must infer that this is the single-record fetch.

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?

'by id' implies the precondition of a known group_id, and the sibling list suggests this is the follow-up detail call. There is no explicit when-to-use statement, no exclusion, and no mention of when the list tool is preferable.

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