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

Beyond the annotations, the description adds meaningful behavior: only passed fields change, updates apply to the draft, calls cost $0.001, and failed calls are free. It also explains that analytics_site expects a site_id from analytics_add_site and that chat places the account's widget on every page. It still omits details like null-clearing behavior and how draft changes become live.

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?

The description is dense and every clause contributes new information, but it is structured as one long run-on sentence with semicolons and parentheticals. It is information-rich but less readable than a short front-loaded summary followed by field groups.

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 10-parameter nested mutation with very low schema description coverage and no output schema, the description is quite complete: it explains what most fields control, the analytics dependency, draft scope, and billing behavior. It lacks explicit treatment of null/clearing semantics and the relationship to publishing/rollback, which are relevant for a settings mutation.

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?

With only 10% schema description coverage, the description carries most of the semantic burden and does so for almost every property: title, description, language, footer contents, header button, blog title/menu label, show_name, analytics_site, and chat. Remaining gaps include explicit meaning for the required 'site' parameter and how passing null behaves for nullable fields like header_button and analytics_site.

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 ('Change a website's settings') and then enumerates the exact settings it controls, from title and footer to blog labels and analytics/chat switches. This clearly distinguishes it from sibling tools such as website_save_page, website_create, and website_publish.

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?

The usage is implied: it is the tool for changing site-level settings, and the mention that changes apply to the draft hints at a publish workflow. However, the description does not explicitly say when to use this versus alternatives like website_save_page or website_publish, nor does it state prerequisites or exclusions.

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