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

Annotations already declare readOnlyHint=false, idempotentHint=false and openWorldHint=true, but the description adds the async nature of the operation, the required polling loop, and the meaningful side effect that the new logo lands in the editor rather than live because of other unpublished edits. It does not mention cost/quota implications or whether the previous logo is retained anywhere, which keeps it from a 5.

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 action, the follow-up loop, and the publish caveat are ordered by priority and front-loaded with no filler. Sentences are dense and slightly run-on (the publish clause reads as a fragment), but every clause carries operational 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 non-idempotent async mutation with an output schema, the description covers the trigger, the polling contract, the terminal states, and the editor/publish edge case. Return values are covered by the output schema, so nothing an agent needs to invoke and follow up correctly is missing.

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 domain, logo_style and business_name are already fully documented in the input schema. The description adds no format, constraint, or default information beyond that, so the baseline 3 applies.

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 ('Make a new logo for the user's website') and immediately bounds the scope with 'without rebuilding the site', which separates it from create_website. The trigger condition ('when they don't like the current one') makes the intent 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?

Gives an explicit when-to-use condition, names the follow-up tool (get_website_status) and the loop condition (until logo_state is done or failed), and tells the agent what to do if the response message says to publish. This is a full usage protocol, not just a hint.

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