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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered upstream. The description adds one genuine behavioral note – that the call does not affect what the user sees in the app – which is useful side-effect context, but it omits anything about return payload scope or the cost of enabling sessions.

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 short sentences, front-loaded with the primary behavior and zero filler. The optional-sessions clause and the non-UI-impact note each carry information, though the second sentence is slightly oblique in wording.

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 read-only fetch with nested pagination and no output schema, the description covers the retrieval and the optional sessions flag but says nothing about what a workspace object contains or how this differs from fuzz_list_workspace_contents. Adequate but with a visible gap around return content and sibling routing.

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%, so all three parameters (including the nested pagination object) are already documented in the schema, including the nextCursor guidance and the chat:read requirement for includeSessions. The description adds no parameter-level meaning beyond that, so the baseline 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 ('Returns one workspace'), plus an optional expansion ('its resumable chat sessions'). It is clearly distinguishable from fuzz_list_workspaces by the singular object, but it never names a sibling or contrasts itself explicitly with alternatives like fuzz_list_workspace_contents.

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?

Usage is only implied: an agent can infer this is the by-ID single-fetch tool versus fuzz_list_workspaces, and that includeSessions is opt-in. There is no explicit when-to-use/when-not guidance, no stated prerequisites (e.g. needing an ID from fuzz_create_workspace), and no routing to related siblings such as fuzz_list_workspace_contents.

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