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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds genuinely new context by describing what the payload contains — verbatim pricing-page fees, published scope/deliverables/timeline, and a booking link — which is the kind of detail annotations cannot express.

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 content scope is front-loaded and the trigger sentence is placed last, which is good ordering. However, the phrase 'PPC, social media ads, display and retargeting, Google Ad Grant management' appears twice in near-identical form, which is wasted space in an otherwise single-paragraph description.

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?

There is no output schema, so the description must convey the return shape — and it does, listing fees, service page, booking link, and published scope/timeline. For a zero-argument read tool with full annotation coverage, this is close to sufficient, missing only a note on freshness or source of the fee data.

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?

The tool takes zero parameters, so there is nothing for the schema to document and no parameter semantics to add. Baseline 4 applies; the description correctly implies no inputs are needed to get the full offer.

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 names a specific resource (TESSA's online advertising/SEM offer) and enumerates its contents — management fees, service page, booking link — with enough specificity to separate it from get_seo_offer or get_web_ai_development_offer. It does not name any sibling explicitly, so differentiation is inferred from topic keywords rather than stated.

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?

It gives an explicit when-to-use trigger: questions about Google Ads, PPC, SEM, social media ads, display/retargeting, or Google Ad Grants. It offers no when-not guidance and never names the closest alternatives (e.g. get_pricing, get_seo_offer) to route the agent.

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