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

The annotations already declare readOnlyHint=true and openWorldHint=true, and the description is consistent with a read-only listing operation. It adds useful behavioral context by calling this a 're-entry gate' that must be checked before redeem/post, but it does not describe return format, pagination, or other operational details.

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?

It is a single front-loaded sentence with no wasted text. The purpose, prerequisite timing, and gate metaphor are all conveyed efficiently.

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 simple read-only list tool with one fully documented parameter and annotations covering safety, the description gives enough context about when the tool matters. It does not explain the exact returned shape, but the overall complexity is low enough that this is a minor gap.

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?

There is only one parameter, and the schema fully documents it as the Trust session token, including its source and non-persistence. The description adds no parameter-specific semantics, so the schema does the heavy lifting and the baseline score of 3 applies.

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 gives a specific verb and resource: 'List the loop ratings you still owe.' It also adds scope via 'before your next loop redeem or loop post (the re-entry gate),' which helps distinguish it from sibling loop actions, though it does not name those sibling tools explicitly.

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 clearly states when to use the tool: before a next loop redeem or loop post, as the re-entry gate. It does not explicitly name alternatives such as desk_loop_attest or desk_loop_submitted, but the prerequisite context is clear.

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