sync_news

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

With no annotations, the description carries full disclosure responsibility. It mentions fetching and updating, which implies network access and mutation of stored data, but it does not clarify whether it is idempotent, whether existing entries are overwritten, what happens if feeds are not subscribed, or whether there are rate limits or authentication requirements.

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 a single, front-loaded sentence with an active verb and a clear object. It is efficient and avoids filler, though it is somewhat under-specified in terms of behavioral nuance.

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 tool with one optional parameter, no output schema, and no annotations, the description is too thin. It leaves unclear what feedUrls does, what action occurs when the parameter is absent, and what the return value or side effects are. An agent could call it without knowing key operational 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?

Schema description coverage is 0%, and the description does not explain the feedUrls parameter or how it interacts with the 'subscribed feeds' behavior. Though the parameter name and format are self-explanatory, the description adds no meaning about optionality, constraints, or what happens when feedUrls is omitted.

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 states an action (fetch) and its effect (update stored entries), clarifying the sync responsibility. It does not explicitly name or distinguish siblings, but the phrase 'update stored entries' separates it from fetch_news and preview_feed.

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 implied usage is to refresh stored news from subscribed RSS feeds, but there is no explicit guidance about when to use this instead of fetch_news or how it relates to subscriptions. Context is present but no exclusions or alternatives are named.

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