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

Annotations only supply destructiveHint=true, so the description carries most of the behavioral burden. It adds useful context beyond annotations: 'Visible to staff immediately' discloses the side effect timing and the confirm-read option has a stated default. However, it says nothing about authoring permissions, whether memos can be edited/deleted afterwards, or rate behavior.

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?

It is a single packed sentence with the core action front-loaded, followed by a terse endpoint reference. The trailing 'Deputy: PUT /api/v1/...' adds little for an agent but does not bloat the text.

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 5-parameter mutation tool with no output schema and thin annotations, the description covers the key behaviors (visibility timing, targeting, confirmation). It is reasonably complete, though it omits return information and permission requirements.

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%, so all five parameters are already documented in the schema. The description mirrors the targeting concepts (specific locations or users, confirm read) but adds no syntax, format, or edge-case detail beyond what the schema provides. Baseline 3 is appropriate.

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 a specific verb and resource ('Post a memo to a location's news feed') with clear scope, plus the targetable dimensions. No sibling tool competes with it, and an agent can distinguish it from the shift/leave/timesheet tools immediately.

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 explains the targeting options and the confirm-read flag, but gives no when-to-use guidance or alternatives context, nor any prerequisites (e.g., what permissions are needed to post a memo). Usage is only inferable from the parameter mention.

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