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

readOnlyHint=true and openWorldHint=true already declare the safety profile, so the description only needs to add context. It contributes the returned field set (name, address, head, employee ids), which is useful, but says nothing about not-found/error behavior or permissions.

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?

One front-loaded sentence with a compact payload summary and no filler. Nothing is wasted, though the parenthetical field list is the only added signal.

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 simple single-id lookup with annotations covering safety and no output schema, the description gives the return shape in outline. It is adequate but thin on edge cases such as a missing or invalid branch id.

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?

There is a single required parameter whose schema description is 100% covered ('The branch id.'). The description adds no format or type detail beyond that, 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 and resource ('Get one branch') and enumerates the returned fields, which distinguishes it from the plural sibling talenox_list_branches. It stops short of explicitly naming that sibling, but the singular scope is unambiguous.

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?

'Get one branch' implies the singular-lookup case versus listing, but the description never states when to use this tool over talenox_list_branches or what to do if the id is unknown. Usage is inferable, not stated.

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