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

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds that inputs are 'validated server-side' and the result is an 'audited deliverable', which gives some behavioral context. However, it does not describe output structure, potential errors, or any side effects beyond what the annotations cover. No contradiction with annotations.

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 description is three sentences and not overly long, but part of it is promotional ('Gapup agent-payable C-suite expertise (CMO)') and adds no operational value. The reference case and server-side validation note are useful, but the wording could be tightened to focus on what the tool does and when to use it.

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?

Given the absence of an output schema, low schema coverage, and nested required parameters, the description is insufficient. It fails to explain what the 'structured, audited deliverable' contains, how inputs map to the reference case, or what the agent should do with the result. The description is far from complete for a tool with this complexity.

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 only 17%, and the description does not compensate. It references 'documented case fields' but does not explain any parameter meanings. The schema only documents 'async' in detail; required nested objects like company, announcement, targetAudience, and targetMedia are left semantically opaque. The description adds nothing to clarify parameter semantics.

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 says 'Presse & influenceurs' and 'Returns a structured, audited deliverable', but never states a specific verb or resource. The reference case hints at a press/influencer outreach plan, but the core action is implied rather than explicit, making it vague and not clearly distinguishable from sibling tools like content_engine or brand_builder.

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?

No explicit guidance on when to use this tool versus alternatives. It does not mention any exclusion criteria or sibling tools. The reference case provides some context for the intended use, but no when-to-use or when-not-to-use instructions are given.

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