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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered. The description adds real context beyond that: the tool only deletes loops owned by the signed-in person, an authorization boundary an agent needs before calling it. It stops short of describing any recovery path or confirmation behavior.

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 short sentences, action first, prerequisite second. Every clause carries information and nothing is repeated from the schema or annotations.

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 one-parameter destructive tool with full annotation coverage and no output schema, the description supplies the ownership scope and the id source. Missing only irreversibility/permission specifics, which the annotations largely imply.

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 100% for the single required parameter, so the baseline is 3, but the description adds value by telling the agent where the loop_id comes from (list_loops), which the schema does not. It still gives no format hints (UUID, numeric string) beyond the schema's 'The loop id.'

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 and resource ('Delete ... loops') and adds an ownership scope ('signed-in person's'), which is more than the name conveys. It does not explicitly contrast with the other delete_* siblings (delete_flow, delete_folder, delete_organization, delete_portal), but the resource noun makes the distinction obvious.

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?

The second sentence gives a workflow prerequisite ('Get loop_id from list_loops'), which is genuinely useful for invocation ordering. However, it offers no when-not guidance, no mention of permissions or consequences, and no alternative to consider, so usage is only implied rather than framed.

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