apple_set_price

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

No annotations are provided, so the description must disclose behavioral traits. It states 'Set app price', implying a mutation operation, but does not elaborate on side effects (e.g., pricing effective immediately, need for app review), permissions required, or any other behavioral details beyond the basic action.

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, no unnecessary words. The main verb and resource are front-loaded, and the additional instruction is placed after. Perfectly concise for the information provided.

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?

With no output schema and no annotations, the description is too sparse. It does not mention that startDate is optional, what happens after setting (e.g., requires submission), or any implications like pricing effective dates. For a pricing tool, critical context is missing.

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 input schema already has 100% coverage with descriptions for each parameter. The description adds 'Use price tier ID from Apple price points', which reinforces but does not significantly extend the schema's guidance. Baseline 3 is appropriate as the schema carries the burden.

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 verb 'Set' and the resource 'app price', with additional detail that it can be free or paid. It also instructs to use price tier ID from Apple price points. While it doesn't explicitly differentiate from siblings like apple_get_pricing, the purpose is specific and unambiguous.

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 gives implicit guidance by mentioning 'Use price tier ID from Apple price points', but does not state when to use this tool versus alternatives, nor does it provide any exclusions or prerequisites. Usage context is partially clear.

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