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

With no annotations, the description carries the full burden and largely succeeds: it discloses the owner/session prerequisite, the mandatory consent, and the non-retroactive scope ('calls queued after the change'). It stops short of stating whether the region can be changed again later or how to reverse a choice.

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 key constraint (owner-only, choose region, no calls until chosen) is front-loaded, but an entire legal statement is embedded verbatim, roughly half the text, which is heavy for an agent that only needs to know acceptResponsibility must be true.

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?

No output schema exists, and the description covers prerequisites, the consent requirement, and when the change takes effect, which is enough to invoke the tool correctly. Only reversibility/change-of-region behavior is unaddressed.

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 only 33%, so the description must compensate. It clarifies the two region values (eu=European Union, us=United States) and explains the consent behind acceptResponsibility, but workspaceId is left undocumented and the boolean's semantics come mostly from the schema itself.

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 action and resource: choose the processing region ('eu' or 'us') for the workspace's call audio and text. It is clearly distinguishable from siblings like workspaces_update, which have no region semantics.

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 strong context: owner-only, signed-in session required, no call starts until a region is chosen, and it applies to calls queued after the change. It does not explicitly name an alternative tool, but no sibling performs this function.

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