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

Annotations already declare readOnly, idempotent, non-destructive, non-open-world, so the safety profile is covered. The description adds genuine behavioral context beyond that: the recommended call ordering and the semantic reason (interpreting dates/currency in workspace terms). Return-format detail is legitimately omitted because an output schema exists.

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 tight sentences, front-loaded with the resource and its fields, followed by the usage directive and the sibling pointer. No filler, no redundancy.

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 zero-parameter, read-only context tool with a full output schema, the definition supplies everything an agent needs: what it returns, when to call it, and which sibling to use for people. Nothing material is 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 per the rubric baseline is 4. The enumerated fields in the description describe the response payload rather than inputs, which is useful orientation but not a parameter-semantics contribution.

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 (Get) and resource (the connected workspace) and enumerates the returned fields (name, slug, timezone, currency, country). It also explicitly carves out the sibling twelfth_list_workspace_members for the 'people' case, so an agent can distinguish it from adjacent tools without opening schemas.

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 ordering directive ('Call it first') with the reason (dates and money read in the workspace's own terms), and names the alternative tool for a different need. Both when-to-use and the sibling routing are spelled out.

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