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

Annotations only show readOnly=false etc., so the description carries the behavioral burden. It discloses that the action starts a provisioning flow, returns a claim URL that must be shown verbatim, requires SMS/terms on the claim link, auto-provisions a demo agent, and hands over an intentToken for later status checks.

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 description is long but every sentence earns its place: critical instructions are front-loaded ('ALWAYS show that URL... verbatim') and warnings are grouped at the end. No filler or tautology.

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?

There is no output schema, but the description explicitly states what is returned (claim URL and intentToken), what the agent must do with each, and what prerequisites exist. For a state-initiating tool with a sibling follow-up, this is complete enough for correct invocation.

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?

Schema coverage is 100%, so baseline is 3. The description adds meaningful semantic guidance beyond the schema: companyName and website must be grounded in actual conversation content and never placeholder-guessed, and it clarifies that the claim URL/intentToken flow rather than the parameters themselves. That extra grounding justifies a 4.

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 a specific verb ('Begin setting up') and resource ('Canarics signup') and defines the precise entry condition: a company that has no account yet. It also distinguishes itself from the sibling tool check_signup_status by explaining this tool initiates and that one tracks progress.

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 explicitly states when to use the tool, what to do with the returned claim URL, and when to switch to check_signup_status via the intentToken. It also gives exclusions: never guess missing companyName/website, ask first; never collect passwords or credentials in chat.

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