Create AdMob app

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

Annotations indicate readOnlyHint false, openWorldHint true, and destructiveHint true. The description states 'Create a new app', which aligns with a write operation but does not mention destructive behavior. The allowlisting and dryRun features add some behavioral context, but the destructiveHint contradiction reduces clarity.

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?

Two sentences, front-loaded with the core purpose, no unnecessary words. Every sentence provides critical information.

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?

No output schema; the description does not state what the tool returns (likely the created app). Given the destructiveHint annotation, more context about side effects or irreversibility would be beneficial. The description covers inputs well but lacks output and side-effect details.

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 parameters are well documented. The description adds value by explaining the dryRun parameter's purpose (preview request) and mentioning default publisherId from environment, going beyond 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?

Title and description clearly state 'Create a new app under an AdMob account', specifying the verb 'create' and resource 'app'. This distinguishes it from sibling tools that create ad units, mediation groups, etc.

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 explicit guidance on when the tool can be used: it is allowlisted, so a 403 indicates lack of access. It also mentions using dryRun to preview requests. However, it does not explicitly state when not to use or list alternatives.

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