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

Annotations already establish readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuinely new behavior: the initial view is capped at 'up to 100 items', which warns the agent the opening result is partial, and it reinforces the non-mutating nature.

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?

Three short, front-loaded sentences with no filler and the usage trigger stated first. The middle fragment 'Localization projects, strings and translations.' is slightly clipped but still reads as the content scope.

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 structure need not be described. For a zero-parameter, non-destructive UI-launch tool, the description covers trigger, scope, initial item cap and the mutation exclusion, leaving little an agent needs 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?

The tool takes zero parameters, so the baseline is 4; there is nothing for the description to clarify about argument semantics.

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 concrete action and resource: opening Multilocale to browse a workspace interactively, and clarifies the domain (localization projects, strings, translations). It distinguishes itself from the sibling CRUD/list tools by being an interactive launch rather than a data operation, though it does not name a specific sibling.

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?

Gives an explicit trigger ('when someone wants to open... and browse interactively') and an explicit exclusion ('Not for changing data'), which correctly routes mutation requests elsewhere. It stops short of naming the alternative sibling tools an agent should use for programmatic reads or writes.

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