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), so the description earns credit for what it adds beyond them: the returned link is one-time and valid only 15 minutes, and it is the page where scheduler keys are entered. That timeout and single-use constraint is exactly the kind of operational detail the annotations cannot convey.

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 safety qualifier is front-loaded as 'Read-only.', then a single sentence enumerates the returned resources and the link's constraints; nearly every clause carries new information. It is dense but readable, with only mild nesting of the projectId parenthetical.

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 burden of describing returns, and it does so by listing projects, scheduler accounts, channels and the time-limited link. It stops short of describing the response's structure or ordering, a minor gap for a zero-parameter read.

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, which sets the baseline at 4 per the rubric, and the description does not need to explain any inputs. It correctly signals an account-scoped, argument-free call, so an agent will not hunt for a required account id.

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 concrete resources it returns: the user's projects (with the projectId that list_queue, send_post_now and insights consume), linked scheduler accounts and channels, plus a one-time account-page link. That inventory, combined with the 'Read-only' opener, lets an agent distinguish show_account from mutation siblings like delete_linked_account without opening the schema.

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 implied clearly rather than stated as a rule: by calling out that the returned ids are 'the projectId for list_queue, send_post_now and insights', it signals this is the prerequisite/discovery call before those tools. There is no explicit when-not-to-use or exclusion, which keeps it short of a 5.

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