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

The annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description still adds genuinely new behavioral context by stating the tool opens nothing by itself and that its output is a step-by-step walkthrough of screens, buttons and fields. It loses a point for not hinting at output length or whether a browser session must already exist.

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 core is two tight, front-loaded sentences that put the return value first and the follow-up action second. However, the closing fragment 'Ashby's official API: Yes.' is unexplained boilerplate that adds no actionable meaning and forces the agent to guess at its intent.

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 parameters and no output schema, the description carries the burden of explaining what comes back, and it does: a step-by-step Ashby walkthrough rather than a performed action. It also names the downstream tools to use. It is only slightly incomplete in not stating session prerequisites or roughly what the returned guide contains.

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 schema has zero parameters, so there is no parameter meaning to convey and the baseline of 4 applies. Nothing in the description misleads about inputs. The one implied input, the user's Ashby account/context, is mentioned but not elaborated.

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 makes clear this is a guide/instruction generator, not an executor: it 'Returns how to do it in Ashby step by step (screens, buttons, fields) and opens nothing by itself.' That resolves the tension with the name 'schedule_interview' and tells an agent what it actually gets. It stops short of a 5 because it never contrasts itself with the sibling guide tool cotlet_app_guide.

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?

There is real workflow guidance: call this, then perform the steps 'with the cotlet_browser_* tools in the user's Ashby Cloud Browser.' That establishes sequencing, which is useful. But there is no when-not guidance, no prerequisite check (e.g., an open Ashby Cloud Browser session), and the trailing 'Ashby's official API: Yes' is too ambiguous to route an agent between this tool and any API-based alternative.

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