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

Annotations already declare destructiveHint=true and idempotentHint=true, so the overwrite/non-read behavior is signaled structurally. The description adds real value by naming exactly what is lost ('the current description'), which clarifies the blast radius beyond the annotation flag. It omits auth/permission needs and return behavior, but the annotated bar is lower here.

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?

Three tight sentences: purpose first, then a concrete example, then the downstream rationale. Every sentence carries information an agent needs, and the most important constraint (it overwrites) is stated up front.

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 write with no output schema and annotations covering safety, the description supplies purpose, format, example, and overwrite semantics. It is only marginally short of complete because it says nothing about the result of the call or confirmation behavior.

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 schema already specifies 'What you sell, 10 to 600 characters.' The description supplements this with an illustrative example and a 'sentence or two' length/tone cue that the schema's raw character cap does not convey.

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 concrete verb+resource (set/replace the offering description) and makes the effect unambiguous with 'It replaces the current description.' The example ('Payroll software for restaurant groups with 5 to 50 locations') makes the intended content type unmistakable, and none of the siblings overlap this action, so no differentiation is needed.

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 explains the downstream purpose ('We use it to decide which findings are worth your time') but gives no explicit when-to-call trigger, prerequisites, or alternative to prefer. Usage is only implied: call it when you want to declare your offering.

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