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

With no annotations, the description carries the full burden and does well: it discloses that the provider builds and hosts the site, the TTL-based takedown and redeploy requirement, and hard limits (max 2000 files / 25 MB, UTF-8 text). It does not mention auth/permissions, but the operational constraints are unusually well covered.

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?

Four tight sentences, front-loaded with the action, then the input format, then runtime behavior and lifecycle. Nothing is redundant and each sentence adds callable 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?

For a two-param, no-output-schema tool with no annotations, the description covers input format, limits, hosting behavior, lifecycle, and where to fetch the resulting URL. Only the permission model is unaddressed, which is a minor gap given the otherwise thorough coverage.

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% so the baseline is 3, but the description adds value beyond the schema by specifying the exact files:[{path, content}] shape, UTF-8 encoding, and the 2000-file / 25 MB limits that the schema does not include. It reinforces rather than merely restates the parameter docs.

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 ('Deploy source files to a website') and implicitly contrasts with siblings by pointing to read_website for the live URL and by dealing with an existing website_id rather than create_website. An agent can distinguish this from create_website/list_websites without opening any 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 useful follow-up guidance ('poll read_website for the live URL') and lifecycle context ('redeploy to bring one back'), but never states when to choose this over alternative siblings or any prerequisites beyond the mechanics. Usage is implied rather than explicit.

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