set_eu_trader_status

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It honestly states the tool is not API-addressable, returns steps and a deep link, and is a Pro feature. This goes beyond the schema by explaining what the tool actually does (guidance) and its non-mutating nature, though it does not mention authentication or potential side effects.

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 two concise sentences that front-load the primary purpose and immediately provide key behavioral qualifiers. Every phrase earns its place, with no filler or redundant repetition of the tool name or schema.

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 one parameter, no output schema, and a simple guidance function, the description adequately covers the essential information: what it does, how it behaves (non-addressable, returns steps), and a prerequisite (Pro feature). It could benefit from a brief note on when one would need EU DSA trader status, but overall it is sufficiently complete.

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 schema fully describes the only parameter (app_id) with 100% coverage, so the description need not add parameter details. The description adds no additional semantic value for the parameter, which is acceptable given the schema coverage, but it does not enhance understanding 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?

The description uses the specific verb 'Declare' with the resource 'EU Digital Services Act trader status', which clearly identifies the tool's purpose. It also distinguishes this tool from siblings by its unique subject matter and explicitly notes it is not API-addressable, clarifying its role.

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 implies usage context by stating 'Not API-addressable; returns the exact steps + deep link' and 'Pro feature', which suggests it is for guidance rather than direct action. However, it does not explicitly state when to use this tool versus alternatives, nor does it name any sister tool as an alternative.

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