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

With no annotations, the description carries the full behavioral burden and does so thoroughly: it declares the operation permanent and irreversible, lists every destroyed resource class, states the exact confirmation requirement, explains refusal conditions, and notes backup expiry at about 31 days. It leaves little about consequences or authorization to inference.

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 description is dense but front-loaded with the most important facts: owner restriction and permanent deletion. Every sentence adds necessary operational detail without repetition or 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?

For a destructive, high-stakes operation with no annotations and no output schema, the description covers authorization, confirmation, side effects, refusal conditions, irreversibility, and backup expiry. An agent has enough context to invoke it safely.

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 only 50%; confirmName has a schema description and the tool text reinforces its exact-match requirement, but workspaceId is undocumented in both schema and description beyond the implied 'this workspace' context. The description adds useful meaning for confirmName but does not fully compensate for the missing workspaceId semantics.

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: 'permanently delete this workspace and everything in it,' and enumerates the owned resources that go with it. It clearly distinguishes this destructive workspace-level operation from siblings like workspaces_update or account_delete.

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 explicit prerequisites (owner only, signed-in session, confirmName must equal the workspace name) and explicit refusal conditions (active calls, existing Twilio line), including the remedy: delete the line first. This tells the agent both when it can call the tool and when it must not.

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