create_vendor

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

With no annotations, the description carries the full behavioral burden, and it only implies a mutation via "Create." It says nothing about permissions/auth needs, duplicate-name behavior, idempotency, or what the call returns on success or failure.

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?

Two tight sentences with the required field stated up front and optional fields summarized after; no filler. The grouping of optional fields is slightly lossy but nothing is wasted.

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 nested 15-field create tool with no annotations and no output schema, the description covers the essentials (required name, some optional groups) but leaves several fields unexplained and gives no post-call expectations (created vendor ID, validation failures). Adequate but with clear gaps.

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 reported at 0% and the single top-level parameter is an undescribed nested object, so the description must compensate. It usefully names the required displayName and groups the optional fields (contact, address, 1099 eligibility), but omits currencyCode, paymentTermsCode, and the givenName/familyName/companyName fields entirely.

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?

"Create a new vendor in KikoBooks" gives a specific verb and resource, and the create/update/delete vendor sibling set is trivially distinguished by the verb. It does not, however, differentiate itself from any other create_* tool beyond the resource name.

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?

The description states what is required versus optional but never says when to reach for create_vendor versus search_vendors, get_vendor, or update_vendor. No prerequisites or exclusions (e.g., duplicate handling, when to update instead) are given.

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