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

Annotations already declare readOnlyHint=true, openWorldHint=true, destructiveHint=false, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the concrete return payload and the fact that the id is the workspace_id input for other tools, plus the underlying endpoint GET /v1/workspaces.

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?

Front-loaded with the core action and result fields, followed by two short, purposeful sentences about downstream use and the endpoint. Slight density in the field enumeration but no wasted filler.

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?

There is no output schema, so the description correctly compensates by naming the returned fields and explaining how to reuse the id. Combined with annotations covering safety, an agent has everything needed to call it, though pagination or result-size behavior is not addressed.

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 coverage is 100% and the sole parameter 'roles' is fully documented in the schema, so the baseline is 3. The description never mentions the roles filter and adds no syntax or semantics beyond the schema, so it does not exceed 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 ('List the Clockify workspaces you belong to') and enumerates the concrete fields returned (id, name, plan, subdomain, currencies, rates). An agent can distinguish this from sibling list tools (clients, projects, tags) without opening any schema.

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?

Explicitly tells the agent how to consume the result: 'Use the id as workspace_id in other tools,' which is the key cross-tool routing information. There is no competing sibling for listing workspaces, so no exclusion guidance is needed, but no usage conditions (e.g. when to filter by role) are stated.

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