get_account_details

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

Annotations already establish readOnlyHint=true and openWorldHint=true, so safety is covered. The description's real contribution is listing what comes back, which matters because there is no output schema — but the trailing 'etc.' undercuts that by leaving the return set open-ended, so it adds partial rather than solid value.

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?

One compact sentence with the resource stated first and the field list following, so nothing is buried. The only blemish is the 'etc.' terminator, which adds no information and slightly weakens an otherwise tight enumeration.

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 zero-parameter, read-only tool with no output schema, the description needs to convey roughly what comes back, and the field list does that at a useful granularity. The open-ended 'etc.' is the sole gap and is minor against a tool with no required inputs and clear annotations.

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 baseline applies and there is nothing for the description to disambiguate. It correctly spends no words on inputs, which is the right call here.

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?

Specific verb ('Get') plus a named resource ('account details') followed by an enumeration of the fields returned (username, plan/subscription, bandwidth, default alias domain/format, limits). An agent can tell this is account-level metadata rather than alias- or domain-level data, though the description never names a sibling such as get_username to sharpen the boundary.

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?

Usage is only implied: the enumerated fields suggest reaching for this when you need account-level settings. There is no explicit when-to-use statement, no exclusion against get_username, get_api_token_details or get_account_notifications, and no prerequisite notes.

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