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

With no annotations present, the description carries the burden and does so better than most: it discloses the exact credential (ORG_OWNER_KEY), the three accepted transport forms (Authorization: Bearer, X-API-Key, api_key), and the authorization failure mode. It stops short of stating idempotency or overwrite behavior for an existing note_date, which is the main remaining gap for a mutation.

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 dense sentences with no filler; the actor and action come first, followed by payload and then the auth constraint. Nothing is repeated from the schema or title.

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?

An output schema exists, so return values need not be explained. Still, for a 6-parameter write tool with zero schema descriptions, the definition leaves note_date format and department/author value expectations entirely unspecified, and says nothing about duplicate submission behavior.

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, and it partially does by clarifying that proposed_lessons is a JSON string containing a list of objects with title and body — resolving a real ambiguity given the schema types it as a plain string with default ''. However, department, author, and especially note_date (no date format given) remain undocumented in both places.

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 names a specific verb and resource ('files that department's daily note') and enumerates the payload fields, so the core action is unambiguous. It does not, however, distinguish this from similar write siblings such as submit_finding or submit_lesson, which an agent must choose between.

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?

It supplies a caller-eligibility precondition ('A department head files... Anyone other than that department's head is rejected'), which lets an agent self-check whether to call at all. But there is no guidance on when to prefer this over submit_finding/submit_lesson, nor on what to do if the note already exists.

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