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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the mutation/safety profile is covered. The description adds the confirmation gating step, but the mechanics of that flow (action_summary + token, second call with same args) live entirely in the schema's confirmation_token description, so the prose adds little beyond what structured fields give.

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, zero padding, with the action and its precondition front-loaded. Every sentence earns its place.

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 two-parameter destructive tool with full schema coverage and clear annotations, the description plus structured fields cover what an agent needs: what it does, that it mutates the watchlist, and that confirmation is required. The reversible/irreversible consequence of removal is left implicit, but nothing essential to correct invocation 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?

Schema description coverage is 100% — the 'listing' identifier formats (slug, name, FL ID, profile URL) and the two-step 'confirmation_token' protocol are fully documented in the schema. The description adds no parameter meaning 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?

The description states a specific verb and resource ('Remove a company from the user's watchlist'), which is unambiguous on its own. It does not explicitly differentiate against the obvious sibling watchlist_add or the related request_listing_removal, but the purpose is crystal clear.

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?

It specifies that the action 'Requires the user's confirmation', which is a genuine usage precondition, but gives no guidance on when to reach for this tool versus siblings like watchlist_add or request_listing_removal, nor any exclusions. Usage is implied rather than stated.

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