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

With no annotations provided, the description carries the full behavioral burden. It discloses only that results are chronological and combine 'works and events'; it says nothing about ordering direction, how limit truncates results, pagination, or what the response contains.

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 tight sentences with the resource stated first and the name-format note second; no filler. It is efficient, though arguably too sparse for a tool with an undocumented limit parameter.

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?

No output schema and no annotations, so the description must explain return shape and behavior on its own. It omits the limit parameter's effect and any description of what a timeline entry looks like, leaving significant gaps for an agent to call it correctly.

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 adds real value for 'name' by noting Japanese or English names are accepted, but the 'limit' parameter (max 200) is never mentioned in the description or the schema, leaving half the parameters undocumented.

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 resource (chronological list of works and events) and the entity it is keyed to (a person), with examples of person types that clarify scope. It does not explicitly differentiate itself from siblings like get_entity or on_this_day, which keeps it below a 5.

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 parenthetical '(singer, director, actor, author, developer...)' implies when a person-timeline lookup is appropriate, but there is no explicit when-to-use guidance, no mention of when to prefer get_entity or search_chronodrawer, and no prerequisites stated.

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