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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds useful behavioral context by disclosing that it returns signed image-library URLs, but it omits whether those URLs expire, auth requirements, or error behavior on a missing/invalid id.

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?

A single efficient sentence with the verb front-loaded and no filler. It is appropriately sized, though 'signed image-library URLs' is slightly cryptic without further elaboration.

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 return values; it names the influencer plus signed image-library URLs, which is a reasonable partial account. However, it leaves key details (URL expiry, full returned shape, error cases) unstated for a single-param fetch tool.

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 0% for the single required influencerId parameter, and the description adds no meaning about it — it never explains the id, its format (UUID), or how to obtain it. With the description carrying the full burden and failing to do so, it falls below the schema-documented baseline.

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 (get) and resource (one reusable AI influencer) and notes it returns signed image-library URLs. The word 'one' implicitly distinguishes it from list_influencers, and the resource differs from create_/delete_/regenerate_influencer. It stops short of naming any sibling explicitly, so it's clear but not maximally differentiated.

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?

There is no explicit when-to-use guidance or mention of alternatives. The singular 'one' weakly implies fetching a single record by id versus listing, but the agent must infer the selection condition entirely from the name.

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