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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety and scope are covered structurally. The description adds the nature of returned content (entity list updates, rule changes, sanctions programs) but says nothing about ordering, freshness, pagination, or truncation behavior beyond the limit param. With annotations carrying the safety profile, a 3 is appropriate.

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?

Front-loads the one-line purpose, then a content list, then compact examples with inline comments. Nothing is redundant and each block earns its place.

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?

With an output schema present, the description needn't explain return values, and annotations cover read-only/open-world semantics while the schema covers all five parameters. The definition is essentially complete for a read-only filtered feed; only freshness/ordering context is absent.

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 every parameter is already documented in the schema (ranges, enums-as-strings, defaults). The description only illustrates parameter combinations through examples, adding no syntax or constraint detail beyond what the schema provides. 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?

States a specific verb and resource (get recent US regulatory changes from BIS and OFAC) and enumerates the content returned (entity list updates, rule changes, country policy shifts, new sanctions programs). This clearly separates it from sibling screening tools like sanctions_screen or export_controls_screen, though it never names a sibling 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?

Three concrete invocation examples plus an explicit use case ('Any new entity list additions affecting China?') give clear context for when to reach for this tool. It stops short of stating when NOT to use it or naming an alternative (e.g. sanctions_screen for checking a specific party).

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