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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds genuinely new behavioral content: the shape of the result (timeline + three named facts) and the tracking-coverage caveat 'Says how far it can see', which is real context an annotation cannot express.

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?

Short and front-loaded, with the payload contents enumerated tightly. Slight waste in the first sentence duplicating the title exactly, but the remaining two sentences each carry information.

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?

With no output schema, the description carries the return-value burden and does it reasonably well: timeline plus the three state facts plus a pointer to the `say` field for the human-readable summary. Only the relationship to sibling read tools remains unstated.

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 100% and the schema already documents application_id, including that it comes from prepare_application or list_applications. The description adds no constraint, format, or edge-case detail about the parameter, so baseline 3 applies.

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 the resource and what the tool exposes: a timeline plus three facts (submitted, received by the employer, replied). An agent knows this is an application-progress read. However, the opening sentence restates the title verbatim and the description never distinguishes it from near-siblings like get_application, get_tracker, or list_applications.

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?

There is no when-to-use or when-not-to-use guidance and no alternative is named. 'Says how far it can see' hints at a coverage boundary but does not tell the agent when to pick this over get_application or get_tracker for the same application.

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