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

Annotations already establish readOnly, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds genuinely non-obvious semantics: connecting an account does not create a workspace, and the response omits customer emails and provider identifiers. It does not discuss latency, caching, or ordering, but nothing material is missing for a zero-argument read.

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?

Four short sentences, front-loaded with what the tool returns, followed by the empty-state behavior and two clarifying negatives. Nothing is padded or repeated from the title.

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 values need not be spelled out, yet the description still names the relevant empty-state fields (next_step, setup_url, summary_url) to guide follow-up. For a zero-argument, read-only listing tool this covers everything an agent needs to call it and act on the result.

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 no parameters, so the schema has nothing to document and the baseline is 4. The description correctly adds no pseudo-parameter detail, keeping semantics clean.

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 first sentence gives a specific verb and resource ('List SHVL workspaces') plus the key scope constraint ('available to the signed-in user'), so an agent knows exactly what comes back. It does not explicitly distinguish itself from the other tools in the set (all of which are case/report tools), but the domain difference is clear enough from the resource name.

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?

It gives concrete conditional guidance: if no workspaces exist, explain next_step and offer setup_url or the free summary_url. That is real when-to-use behavior an agent could not infer. It stops short of naming alternatives or saying explicitly when this tool should be called first in a flow (e.g., as a prerequisite to the credit-control tools).

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