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

Annotations already declare readOnly, idempotent, non-destructive and open-world, so the safety profile is covered. The description adds that the read surfaces verification, routing and certificate data, which is useful context, but it says nothing about auth, rate limits, or the beon_* parameters.

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?

A single efficient sentence with no filler, and the key resource and facets are front-loaded. It is arguably too terse for a 9-parameter tool, but conciseness itself is fine.

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 tool with 9 parameters, 0% schema coverage, and no output schema, the description does too little. It doesn't explain the beon_* parameters or what the returned configuration looks like, leaving significant gaps that annotations cannot fill.

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 description coverage is 0% across 9 parameters, and the description explains none of them. Only the required 'domain' is self-evident; the eight beon_* parameters (including two enums) remain completely undocumented in both schema and description.

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 ('Inspect') and names the concrete facets returned: domain verification, routing, and certificate configuration. This distinguishes it from write-oriented siblings like verify_project_domain or add_project_domain, though it doesn't explicitly contrast with vercel_list_project_domains.

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 no guidance on when to pick this over alternatives such as vercel_list_project_domains or vercel_get_project. Usage is only implied by the word 'Inspect' and the listed facets; no when-not or prerequisite information is given.

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