direct.create_adgroups

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

No annotations are provided, so the description carries the full behavioral burden, and it discloses almost nothing: it does not state that this is a write/mutation operation with side effects, whether calls are batch/bulk, what happens on partial failure, or what permissions or account context are required. For a creation tool with nested payloads this is a substantial gap.

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 single sentence is front-loaded, free of filler, and communicates the core action immediately. It is efficient but so short that it does no additional work.

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 a mutation tool with an array of nested objects, 4 parameters, no annotations, and no output schema, the description should explain item structure expectations, batching behavior, and error/response handling. None of that is present, leaving it under-specified for the tool's 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 100%, so every parameter (items, params, account_id, direct_client_login) is already documented in the schema. The description adds no syntax, item-shape, or defaulting information beyond that baseline, so a 3 is appropriate.

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 a specific verb and resource ('Create ad groups') in a named system (Yandex Direct), so the operation is unambiguous. However, it offers no differentiation from close siblings such as direct.hf.create_adgroup_simple or the bulk/vs-single distinctions an agent must choose between.

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 guidance on when to use this tool versus direct.hf.create_adgroup_simple, nor any note about prerequisites (campaign must exist), batching expectations, or how it relates to direct.update_adgroups. The agent is left to infer usage 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.