account_set_tax_default

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

With no annotations provided, the description must carry the full behavioral disclosure burden. It does reveal that calling the tool can either set or clear the default, but it omits details such as whether clearing is achieved by omitting the optional taxCode, whether the change is reversible. For a mutation tool with zero annotation coverage, this is a meaningful behavioral 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 description is one efficient sentence with no filler and the core operation is front-loaded. It is concise, though it sacrifices important behavioral and parameter details.

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 three parameters, no output schema, and no annotations, the description is not complete enough for an agent to call correctly. The main gap is the mechanism for clearing the default tax code: the schema marks taxCode optional, but the description never says that omitting taxCode clears the value. It is an adequate statement of purpose, not a complete operational definition.

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 0%, and the description adds only a general reference to the default tax code. It does not explain the taxCode parameter's role beyond implying it is the value to set, and it does not say how clearing is indicated given taxCode is optional. The schema properties are named clearly, but at 0% coverage the description does not compensate enough for undeclared semantics such as how clearing works.

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 uses a specific verb ('Set or clear) with a specific resource (an account's default tax code. This precisely states what the tool does and differentiates it from related but distinct tools such as update_account and set_vat_method. The scope is clear enough that an agent selecting among the tax and account siblings can identify it without inspecting the schema.

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 no when-to-use guidance about how to choose this tool over alternatives, and it does not mention alternatives such as set_vat_method or update_account. There is also no indication of when one should clear versus set a tax default rather than use another VAT configuration tool.

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