meta_ads_creatives_list

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

Discloses read-only nature and default/max limit. No annotations provided, so the description adds behavioral context beyond the schema. Could mention authentication or rate limits, but sufficient for a simple list tool.

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 concise sentences, each contributing valuable information. Front-loaded with purpose, no fluff.

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?

Covers purpose, usage, and key behavioral traits. Missing mention of pagination details (e.g., cursor), but acceptable for a list tool with limit/max noted. Complete enough given tool simplicity.

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%, so baseline 3. Description adds minimal extra: clarifies account_id fallback and 'act_' prefix, and limit default/max. Adequate but not exceptional.

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?

Clearly states it lists AdCreative resources, specifies returned fields (id, name, status, etc.), and distinguishes from sibling meta_ads_ads_list for listing ads that consume creatives.

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?

Explicitly states when to use: auditing creative inventory or finding creative_id for meta_ads_ads_create. Provides alternative tool for listing ads and notes limit behavior for large inventories.

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