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

With readOnlyHint already declaring the safety profile, the description still adds real behavior: results are ordered newest first and capped at 100. It does not say whether the 100 is a hard truncation or what fields each request carries, but the added ordering and limit context is genuinely useful.

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?

A single short sentence with the resource, scope, ordering, and cap all front-loaded. No redundant or filler wording.

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 zero-parameter read-only list tool, the definition covers scope, ordering, and result cap, which is most of what an agent needs to call it. With no output schema, a brief note on what each listed request contains would close the remaining 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?

The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline applies. The parenthetical clarifies that no filtering or pagination options exist rather than leaving the agent to guess.

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 ('List ... approval requests') plus scope ('this account's'), so an agent knows exactly what it retrieves. It does not explicitly distinguish itself from siblings like approvalgate_get_request or approvalgate_export, though the list-vs-single/export distinction is strongly implied by the verb.

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: 'List' signals enumeration rather than fetching one request or exporting, which is enough for an agent to route correctly in most cases. There is no explicit statement of when to prefer this over the sibling tools or of any preconditions.

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