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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds genuine value beyond that by explaining why it is read-only ('opens nothing by itself') and what is actually returned (screens, buttons, fields), which an agent needs in order to chain into the browser tools. It omits auth/session requirements and whether the returned steps vary by user configuration.

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 operational content is front-loaded and the 'opens nothing by itself' clause is well placed, but the trailing sentence about Teamleader's public API v2 and the absence of an official MCP server (with a check date) is justification for the tool's existence rather than instruction the calling agent can act on. It costs tokens without changing how the tool is invoked.

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 guidance tool with no output schema, the description covers what is returned and what to do next, which is most of the job. It leaves open whether a Cloud Browser tab must already be open on Teamleader and what the step-by-step output looks like structurally, so an agent cannot fully plan the chain in advance.

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 input schema is empty with additionalProperties false and 100% coverage, so there are no parameters whose meaning needs elaboration. Baseline 4 applies; the description neither misleads nor adds anything parameter-related, and nothing is missing.

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 that this is not an executor but a step-by-step guide generator: it 'Returns how to do it in Teamleader step by step (screens, buttons, fields) and opens nothing by itself.' This usefully disambiguates a name ('create_task') that would otherwise suggest a write. It stops short of a crisp one-line statement of purpose, burying the key point after the setup clause.

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 gives the follow-up path explicitly ('then do it with the cotlet_browser_* tools in the user's Teamleader Cloud Browser'), which is real routing guidance. However, it never states prerequisites (must a Cloud Browser session or Teamleader login already exist?) nor distinguishes itself from the sibling cotlet_app_guide, which appears to serve a similar instructional role.

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