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

The annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered structurally. The description adds a genuinely useful behavioral detail beyond that — the required 'vendors:write' scope — but says nothing about cascade effects, whether related records are removed, or whether the deletion is recoverable.

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 short sentences, front-loaded with the action and key, then the permission requirement. No filler, no redundancy.

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 destructive single-argument tool with annotations covering destructiveness and idempotency plus a stated auth scope, the definition is minimally serviceable. It still omits the consequences an agent should weigh before deleting a vendor — related-record handling and recoverability — which is the main remaining gap.

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 100% and there is a single required 'id' parameter already fully documented (UUID format/pattern). The phrase 'by ID' adds nothing the schema does not already state, so the baseline 3 applies.

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 states a specific verb and resource ('Delete a vendor') and adds the lookup key ('by ID'), so the agent knows exactly what the tool acts on. It does not distinguish itself from related siblings such as delete_vendor_site_assignment or update_vendor, but the name and verb make the distinction reasonably inferable.

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 use this tool versus alternatives: no mention of when deletion is appropriate, no warning about related records (e.g. vendor site assignments) that might need cleanup first, and no pointer to update_vendor for non-destructive changes. The reader gets only a definition, not a usage decision.

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