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

Annotations already declare readOnlyHint and closed-world, so the safety baseline is covered. The description adds genuinely new context: the workspace-membership requirement and a prompt-injection warning that memos are agent-written data, not instructions — valuable behavioral disclosure. It omits return format and pagination.

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, front-loading the resource and scope before the safety note. Every clause carries information with no filler.

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 full schema coverage and annotations covering the safety profile, the description is nearly complete, adding the injection warning and membership scope. Minor gaps around return shape/pagination remain, but no output schema means those aren't strictly required.

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 description coverage is 100%, so the schema already documents workspace_id, api_token, and the status parameter. The description restates the same status values with no added syntax or format meaning, so baseline 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 names a specific resource (payment requests) and scope (a workspace you're a member of), and lists the possible statuses. It doesn't explicitly distinguish itself from siblings like payment_status or request_payment, so it stops short of a 5.

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 states a membership precondition but gives no when-to-use guidance, no exclusions, and names no alternative among the many payment-related siblings (payment_status, request_payment, cancel_payment_request). Usage is only implied.

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