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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description adds domain-relevant behavior: the catalog is a fixed set of 136 vendors, requests are routed by channel, and some vendors can be handled automatically versus by hand.

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?

Front-loaded with the verb and the scope in the first clause, and there is no filler. The second sentence is long and packs multiple scenarios into one, but every clause carries usable routing information.

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?

No output schema exists, and the description does not describe the returned vendor fields or ordering, which is a minor gap for a list tool whose results are predictable. Everything needed to decide to call it and which filter to pass is present.

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% and both enum parameters are fully documented with allowed values and meanings. The description only paraphrases the two filter axes ('by category or by how the vendor accepts requests') without adding syntax or edge cases, so baseline 3 is correct.

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 ('List the 136 security vendors') and pins the scope ('this service can send removal requests to'), which clearly separates it from get_removal_guide and scan_domain. The vendor count and the filtering axes make the resource concrete rather than generic.

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 trigger scenarios: checking whether an antivirus, web filter or blocklist is 'covered', or determining which vendors a removal effort must reach. It doesn't name a sibling as the alternative for the 'what do I do about it' follow-up, which is the one gap.

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