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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuinely useful context about the visibility scope ('the space they allowed this app to use') and the returned grid of names, products, last change and clickable thumbnails, but says nothing about pagination behavior, the default/max page size, or what an empty result looks like.

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?

One dense sentence with the ownership scope front-loaded and the return contents trailing; every clause carries information. It is slightly run-on when it describes the clickable 3D grid, but nothing is wasted.

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 no output schema, the description usefully enumerates the returned fields and the click-through behavior, and it states the access scope. What it lacks is paging/limit guidance for a tool that defaults to 12 and caps at 40, which an agent needs to retrieve all projects.

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 lang, limit and query are already documented with defaults and bounds. The description's 'Optional query: words of the name' merely restates the schema and omits the default limit of 12 and the maximum of 40.

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 gives a specific verb and resource ('List the signed-in person's own Drint projects') and scopes it to the app-permitted space, which separates it from list_dielines and search_mockups. It stops short of naming a sibling directly, so an agent must infer the boundary rather than read it.

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?

Usage is only implied: 'the signed-in person's own projects' signals the use case, and 'Optional query: words of the name' hints at the filtering path. There is no explicit when-to-use/when-not or pointer to a sibling for broader project searches.

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