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

Annotations already cover the safety profile (readOnlyHint true, destructiveHint false, openWorldHint false) and the description does not contradict them. Beyond that it discloses real behavioral context an agent would otherwise lack: the delegated-permission requirement, the mid-call sign-in interruption for members who have not connected Automate America, and that the response mirrors the public profile view.

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?

The identity of the tool and its return contents are front-loaded in the first two sentences, with prerequisites after. The trailing sentence about member-written text being data rather than instructions is a boilerplate caution that is at least on-topic here (the tool returns member-authored statements), but it is the one part that could be trimmed without losing tool-selection value.

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 and no parameters, the description carries the burden of describing the return, and it does so concretely (status, day-range of the dated statement, statement list with ids). Auth and the unconnected-member path are also covered, leaving only minor ambiguity in phrasing like 'the run of days their own statement covers'.

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?

The tool takes zero parameters, so the required baseline is 4; there is no argument meaning the description could add. The description instead spends its space on what the call returns, which is the more useful place given the empty schema.

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+resource ('Read your member's stated availability') and then enumerates exactly what that resource contains: current availability status, the dated statement with its covered day range and the day it was stated, and each statement with its id. 'Read' cleanly separates it from the sibling mutators set_my_availability and withdraw_my_availability without needing to name them.

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 states the situation the tool serves (checking whether the member is available now and what dated availability they stated) and adds two concrete preconditions: the caller acts for the member and needs the 'See your profile' (profile:read) permission, and an unconnected member will be prompted to sign in. What is missing is an explicit exclusion or pointer to set_my_availability for changing the value rather than reading it.

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