create_sb_targets

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

Without annotations, the description discloses that it is an '[Ads / guarded write]' and a 'local stdio server is an introspection stub', which are key behavioral traits. It does not detail the consequences of invoking the stub or the exact behavior of 'guarded write', but the disclosure is substantial.

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 a single, efficient sentence that front-loads the core purpose and includes essential context about the stub nature. No wasted words.

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?

For a tool with 5 optional parameters, no required ones, and no output schema, the description is insufficient. It does not explain what the stub returns, what format the 'changes' parameter expects, or how the preview vs create logic works. Additional context is needed for effective use.

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 is 3. The description adds no significant meaning beyond the schema descriptions for parameters like preview, dry_run, changes, etc. It does not clarify interactions between 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's purpose: 'Preview or create Sponsored Brands targets.' It also notes it is a stub, which differentiates from functional tools. However, it does not explicitly distinguish from sibling create tools like create_sb_negative_targets or create_sb_ad_groups, though the resource 'targets' is reasonably distinct.

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 preview vs create, nor when to prefer this tool over alternatives (e.g., create_sb_targets vs create_sb_negative_targets). The stub nature is noted, but usage context is missing.

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