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

Annotations already declare destructiveHint=true, idempotentHint=true, and openWorldHint=false, so the safety profile is covered by structured data. The description adds one genuinely useful piece of context an annotation cannot carry — that the call is free — but says nothing about partial failures, unknown company identifiers, or what happens when the last company is removed.

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 short sentences with the operation front-loaded and no wasted prose. The fragment 'Free.' is a bit abrupt, but it is information-bearing rather than filler.

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 2-parameter destructive mutation with no output schema, the description is minimally viable: annotations supply the danger/idempotency profile and the schema supplies all parameter detail. Still missing is any statement of response or error behavior when an identifier cannot be resolved, which matters for a batch remove of up to 200 companies.

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 100%: 'id' and 'companies' (including the four accepted identifier formats and the 1–200 bounds) are fully documented in the schema. The description adds no syntax, format, or constraint detail beyond that, so the baseline of 3 applies.

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?

States a specific verb (remove) and resource (companies from a watchlist), which matches the intent of the tool precisely. It does not explicitly differentiate itself from add_to_watchlist or get_watchlist, so it falls short of a 5, but an agent can still identify the operation without opening 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 offers no when-to-use guidance, no prerequisites (e.g. the watchlist must already exist), and never names a sibling alternative. The only extra sentence, 'Free.', is pricing context rather than usage direction.

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