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

Annotations already declare destructiveHint=true, so the safety bar is lower, yet the description still adds real value beyond them: it discloses the cascade (fences the subscription, requests cancellation of the active Task) and what survives (existing Space knowledge is preserved). What it omits is whether the removal is a hard delete or a soft/archival state, and whether the task cancellation can fail.

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 with the destructive cascade front-loaded and the preservation guarantee last. 'Fence its subscription' is internal jargon that costs a little clarity but does not pad the text.

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 explained, and annotations cover the destructive profile. For a single-parameter destructive tool the description is nearly sufficient, with the only real gap being irreversibility and what happens if the tool is called on a setup with no active Task.

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?

One required setup_id at 0% schema description coverage, so the description must carry the load; it only implies the parameter's meaning via 'one owned saved configuration' and adds nothing about the uuid form or where the id comes from (presumably private_agent_setup_list). Marginal compensation for the coverage gap.

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?

Specific verb+resource: 'Remove one owned saved configuration', with the ownership qualifier making the scope precise. It doesn't name the sibling families (private_agent_setup_configure / _list / _follow) so the differentiation is implied by the verb rather than stated.

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?

Usage is only implied by the verb and the phrase 'request ordinary cancellation of its active Task', which hints that agent_task_cancel is the standalone alternative but never says so. No when-not-to-use, no warning that this is irreversible, no prerequisite/ownership check guidance.

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