Add Host

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

Annotations are absent, so the description bears the full behavioral burden for a mutation tool. It does not state whether adding an already-existing host fails, whether verification is subsequently required, what permissions are needed, or what the return confirms.

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 front-loaded sentence with zero padding. It is efficient, though arguably too terse to be maximally useful.

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?

With only two well-documented parameters and no parameters requiring complex semantics, the definition is minimally adequate. However, for a mutation tool with no annotations, the absence of guidance on duplicate handling, verification flow, or permissions leaves meaningful 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 100%, with both user_id and host_url documented and an example URL given, so the baseline is 3. The description adds no meaning beyond the schema and does not map 'site' explicitly to host_url.

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?

Specific verb 'Add' plus resource 'new site' (host) makes the operation clear, even though it uses 'site' for the host_url parameter. It does not distinguish itself from siblings like delete_host, verify_host, or add_sitemap, but the core action is unambiguous.

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?

No when-to-use guidance, no prerequisites (e.g. ownership/verification requirements), and no mention of alternatives such as verify_host. The agent must infer entirely from the tool name and sibling list.

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