get_watchlist

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description still adds real context: the watchlist must be 'owned' (an ownership/authorization constraint) and only 'visible' carrier IDs are returned, implying permission-based filtering of results. It omits failure behavior for non-owned or missing IDs and any result-size or pagination traits.

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?

A single front-loaded sentence with no filler; the resource and returned content come first. It is arguably over-compressed, since the brevity comes at the cost of the usage and ownership details noted above.

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 one-parameter read tool with no output schema and full annotation coverage, the description covers the essentials: what is read and roughly what comes back. It leaves ownership semantics and error behavior implicit, which is adequate but not thorough given the visibility-filtering behavior hinted at.

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%, so the description must carry the load for watchlist_id, and it only implies that the ID must reference an owned watchlist. The UUID format and pattern are documented in the schema itself, but nothing clarifies what happens with an unowned or nonexistent ID. With a single parameter this is a modest but real gap below the baseline.

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 and resource ('Read an owned watchlist') plus the payload it returns ('its visible carrier IDs'), which is enough to separate it from create_watchlist and list_watchlists. It never names those siblings explicitly, so differentiation is inferred from the singular ID-bound framing rather than stated.

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?

There is no explicit when-to-use guidance, no mention of when to prefer list_watchlists or get_watch_events instead, and no prerequisites spelled out. The word 'owned' hints that only the caller's own watchlists are readable, but that scoping condition is not framed as usage guidance.

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