list_ad_objects

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

No annotations provided, so the description carries full burden. It mentions 'Objects out of scope are included' without defining 'out of scope'. There is no disclosure of side effects, permissions, or read-only behavior. The timestamp behavior is also unclear.

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 very short (two sentences) but lacks punctuation and clarity. The sentence structure is run-on. While concise, it sacrifices informativeness.

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?

The description does not explain the return format, the meaning of 'ad-object', how the timestamp is determined, or what 'out of scope' means. Given no output schema and no annotations, the description is insufficient for complete understanding.

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 schema has no parameters, so baseline is 4. However, the description refers to a 'provided timestamp' that does not exist in the schema, creating confusion and reducing value. This contradicts the schema.

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 states 'Return the last state of every ad-object at the provided timestamp' but the input schema has no timestamp parameter, making the purpose unclear and misleading. It distinguishes from siblings like search_ad_objects but lacks specificity.

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 guidance on when to use this tool versus alternatives. Sibling tools include many list and get tools, but there is no mention of when list_ad_objects is appropriate or how it differs from search_ad_objects or get_ad_object_* tools.

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