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

There are no annotations, so the description carries the full burden. It does disclose useful response content (recalls, rule changes, each with a source URL), but it omits behavioral details such as limit/pagination behavior, ordering, whether the timestamp cutoff is inclusive, and what an empty result looks like.

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?

A single focused sentence front-loads the core action and required timestamp, then clarifies the output contents. There is no filler, no redundant restatement of the tool name, and every phrase 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 simple list call, the core is covered: required timestamp, optional limit, and returned entities with source URLs. However, there is no output schema and no description of the return envelope, pagination, or limit semantics, leaving an agent to guess when handling large result sets.

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%, so the description must compensate. It does add real value for `since` by specifying ISO-8601 and providing an example. However, `limit` is left entirely to its schema metadata (integer, default 100), with no explanation of what it caps or how pagination works, so compensation is incomplete.

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 opens with a specific verb ('List') and a distinct resource ('ground-truth changes since an ISO-8601 timestamp'), then adds what is included (newly published recalls, rule changes, source URLs). This clearly separates it from sibling tools like search_recalls and get_requirement, which are about finding or fetching individual records rather than consuming a time-based changelog.

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 description clearly establishes when to use the tool: to list ground-truth changes after a given timestamp. It does not explicitly state when not to use it or name sibling alternatives, so it falls just short of full guidance, but the intended use case is unambiguous.

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