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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds real behavioral context beyond that: the shape of the URL returned, that deployment status is included, and that partition defaults to the user's home partition. It stops short of describing pagination or freshness/error behavior, but for a read tool this is solid.

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?

Three sentences, all front-loaded: purpose first, then the two workflow triggers, then the partition caveat. No filler and no repetition of schema-level detail that would waste the reader's attention.

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?

There is no output schema, so the description must convey return content, and it does (public URL, deployment status, configuration). Combined with the fully documented 4-parameter schema and readOnlyHint, an agent has everything needed to call this correctly.

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%, so the baseline is 3. The description's note about partition defaulting to the home partition and being visible in list_sites largely restates the schema's own wording, and it says nothing about siteId, llm_model, or conversation_id, which the schema already documents thoroughly.

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 ('Get full details of a specific Hostsmith site by ID') and enumerates what is returned: public URL, deployment status, and configuration. It explicitly names the sibling it follows (list_sites) and can be told apart from create_site/delete_site without opening a schema.

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 when-to-use conditions tied to concrete workflows: after list_sites to inspect one site, or after deploy_files/deploy_finalize to confirm the site is live and obtain the URL. It also states when to override the partition parameter and where that value comes from.

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