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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=true, so safety and idempotency are covered. The description adds that it is free and needs no wallet/payment/arguments, which is useful context beyond annotations, but it does not describe what the sample response actually contains.

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?

Single compact sentence that front-loads the free preview nature and the no-payment/no-argument conditions. No wasted words.

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 preview tool with no output schema, the description covers what it is and what it costs (free). It could mention that the returned data is a sample/stale rather than live OFAC deltas, but the preview label and 'sample response' phrasing largely convey this.

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?

Zero parameters, so baseline is 4. The description correctly states no arguments are needed, matching the empty schema.

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 it is a free preview of the OFAC sanctions change-tracking tool and that it returns a sample of the paid response shape. This distinguishes it from the paid sanctions_delta, though the phrasing 'sanctions_delta' could be clearer as 'the paid sanctions_delta tool'.

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?

Implies use when you want to see the response shape before paying. Does not explicitly say 'use the paid version for real data' or list alternatives, but the preview-vs-paid distinction is clear from the description and sibling naming.

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