threatfox_get_recent_iocs

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

With no annotations, the description carries the full burden of behavioral disclosure. It does state that the tool returns all IOCs submitted in the selected lookback window, which is useful, but it does not mention output format, pagination, rate limits, or how large the feed might be. This is adequate for a simple read-only retrieval but leaves some behavioral details unspecified.

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?

The description is two sentences with no filler. The primary action and resource are front-loaded, and the parameter behavior is stated compactly. Every word 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?

For a single-parameter feed retrieval tool, the description provides enough information to select and invoke it correctly: what it retrieves, the time windows, and the intended use case. It lacks an explicit output schema or return-format description, but the absence is less critical for a simple feed endpoint and the description still covers the essential invocation details.

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 schema already fully documents the single parameter 'days' with an enum of 1, 7, or 30 and a description. The tool description simply restates the same lookback windows ('last 1, 7, or 30 days') without adding new semantic detail, so it meets the baseline but does not go beyond the 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?

The description uses a specific verb ('Retrieve') and a specific resource ('ThreatFox recent IOC feed'), and clarifies the scope by saying it returns all IOCs submitted in the last 1, 7, or 30 days. This clearly distinguishes it from the sibling search tools like threatfox_search_ioc, which are for targeted lookups rather than feed retrieval.

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 phrase 'for ambient threat intel sync' gives a clear intended use case: background or continuous synchronization rather than a one-off targeted search. It does not explicitly name alternatives or state when not to use it, but the context is clear enough for an agent to route appropriately.

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