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

Annotations already provide readOnlyHint=true and destructiveHint=false, covering the safety profile. The description adds one useful behavioral nuance ('subscription-aware locked states') but does not explain what happens when the user is not subscribed or what 'open' returns. With annotations carrying the main safety burden, this is acceptable but not richly transparent.

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?

The description is a single, well-structured sentence that places the core action and resource first. There is no redundant phrasing or filler; every phrase adds meaning. This is an efficient and appropriately sized description.

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 simple tool with no required parameters and read-only annotations, the description covers the main purpose. However, it omits any explanation of the two parameters and does not clarify what the tool returns or how the subscription-aware states manifest. Given the low complexity, this is passable but has clear gaps.

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 explain what 'query' and 'uiLanguage' mean, but it does not mention either parameter at all. The agent is left with only default values and max lengths, which are insufficient to know how to populate these fields correctly.

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 clearly states the tool's action ('Open') and the resource ('interactive Poly-Glot template browser and prompt editor'), making the basic purpose evident. It also adds a distinguishing detail ('subscription-aware locked states') not present in the title. However, it does not explicitly differentiate this tool from siblings like get_template or build_prompt, so it falls just short of a 5.

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 guidance on when to use open_workspace versus alternatives such as get_template, search_templates, or build_prompt. The description implies a UI-opening use case, but it never states conditions, exclusions, or which sibling tools to prefer instead. This leaves the agent to infer the appropriate context.

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