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

Annotations already declare the read-only, idempotent, open-world, non-destructive profile. The description adds useful behavioral context: results are newest first, each item includes its date, categories, and official page link, and the content spans several OFAC action types. It does not discuss rate limits, pagination, or the recency-window limitation, but the annotations lower the burden.

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 dense sentences: the first front-loads what the tool returns and how it is ordered, the second states the available filtering. There is no redundant or filler language.

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 listing tool with robust annotations and no output schema, the description does a good job explaining the returned item structure and ordering. The main omission is the limit parameter's default/max and how it interacts with pagination, though the schema supplies its numeric constraints.

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 description echoes the intent of the query and since parameters ('filter by date or words in the title'), while the schema provides the detailed syntax and limits. The limit parameter has no description in the schema and is not addressed by the tool description, so partial compensation for the 67% schema coverage is missing.

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 clearly states the resource: OFAC recent actions, ordered newest first, and enumerates the content types (designations, removals, licenses, FAQs, regulations, settlements). This is specific enough to distinguish it from siblings like search_federal_register or search_screening_lists, though it does not explicitly name those alternatives.

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?

The only usage-like statement is 'Filter by date or words in the title,' which describes parameters rather than when to choose this tool over alternatives. There is no explicit guidance on when to use it versus sibling search tools, nor any exclusions or prerequisites.

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