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 adds little beyond that, and its 'edit it with chat' wording risks leading an agent to expect mutation from a read-only listing tool; it says nothing about pagination limits or what the library contains.

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 short sentence with no filler, which is appropriately sized, but it is under-specified rather than efficiently informative — the front-loaded clause spends its words on a vague 'open your library' framing instead of stating the concrete operation.

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?

An output schema exists so return values need not be explained, but for a 3-parameter tool with 33% schema coverage and numerous near-duplicate siblings, the definition leaves the agent without routing guidance, parameter meaning, or scope constraints. It is too thin for this tool's ambiguity.

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 only 33%: workspaceId is documented in the schema, but 'limit' and 'offset' carry no description anywhere. The description text adds no parameter meaning at all (no mention of paging or workspace scoping), so it fails to compensate for the coverage gap.

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?

It names a resource ('Carryo website library') and implies a browse/select action, but the phrasing 'open ... to select ... and edit it with chat' describes a UI workflow rather than a clear tool verb, so it is unclear whether this lists, retrieves, or launches an editor. It also never distinguishes itself from the very similar sibling 'website.list' or 'website.list_versions'.

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 statement of when to call this versus 'website.list', 'website.read', or 'website.list_versions', and no prerequisites or exclusions are given. The only usage hint is buried in the schema (workspaceId omission lists Personal sites), which the description does not surface.

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