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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds genuinely useful non-annotation context: the auth requirement ("Requires the organization API key") and the default sort order (newest first), which the schema does not express.

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, zero filler, with the resource and ordering front-loaded. Nothing to trim, though it is terse to the point of omitting useful routing detail.

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 read-only list tool with no output schema, the description covers purpose, ordering, and auth. It leaves return shape, pagination/limits, and scoping (organization-only vs. personal) unspecified, which an agent may need.

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% and the single optional status parameter already enumerates its accepted values (pending, approved, denied, expired or cancelled). The description adds nothing about the filter, so the baseline 3 is appropriate.

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?

"Your organization's approval requests, newest first" states a clear resource (approval requests) plus ordering, and the tool name supplies the list verb. It does not, however, differentiate itself from the sibling approval_status or approval_wait, which an agent could plausibly confuse with a listing call.

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?

No when-to-use guidance and no mention of alternatives. With approval_status and approval_wait in the sibling set, the agent gets no signal about which one to reach for when it wants approvals versus a single request's state.

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