List Ad Creatives

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the agent understands it is a safe read operation. The description adds that it returns creative IDs, names, and page post IDs, which is useful but does not elaborate on pagination behavior or other traits beyond the schema.

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 relatively concise and includes a structured Args list. However, it repeats information that could be more streamlined, and the Args block could be integrated more naturally.

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 tool's simplicity, annotations, and no output schema, the description adequately covers the return values and key parameters. It mentions pagination and the returned fields, which is sufficient for a list 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 coverage is only 25%, but the description compensates by listing and briefly describing three of four parameters (ad_account_id, limit, after). While descriptions are minimal, they add meaning beyond what the schema provides for those parameters.

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 clearly states the tool lists ad creatives for an ad account, using specific verb and resource. It distinguishes itself from sibling tools like meta_get_ad_creative (retrieve one) and meta_create_ad_creative (create).

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 provides no guidance on when to use this tool versus alternatives, such as when to use meta_get_ad_creative or other list tools. It simply states what it does without exclusions or context.

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