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

With no annotations, the description carries the full burden, and it does disclose real behavior: it sits in the tier listed for every caller, find_operations reaches it but ranking is unreliable, and an onboarding-scoped API key exists solely for this job. It never explicitly states the tool is side-effect-free (implied by 'guide'), but the auth/discovery context is unusually rich.

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 purpose is front-loaded in the first sentence, but two of the four paragraphs are meta-commentary about discovery mechanics and tier listing that, while marginally useful in discouraging redundant search calls, is verbose for a zero-parameter guide. It could be tightened without losing the routing signal.

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 parameterless informational tool with no annotations and no output schema, the description covers what it is, when to read it, what it contains, and its discovery/auth context. It stops short of sketching the return shape, though the 'fifteen sections' framing implies it.

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?

Zero parameters, so the baseline is 4. The description's detail about 'fifteen sections' and which documents produce them describes the tool's content rather than adding parameter meaning, but there are no parameters whose semantics are left unexplained.

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?

States a specific verb and resource: 'How to onboard and create a NEW company,' and enumerates the scope ('what to ask the user for, which documents to request, and the order to run the setup in'). It partially differentiates from siblings by contrasting with find_operations and the create tool's schema, but never clarifies its relationship to plausible near-siblings like start_signup or collect_api_key.

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?

Gives explicit when-to-use guidance: 'Read this before you start a company setup, and before you tell a user that something cannot be done here.' It also explains the discovery condition that selects it over search. However, it offers no exclusion rules against the other onboarding-flavored siblings.

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