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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=false, openWorldHint=true, so the safety profile is covered. The description adds non-obvious behavior the annotations do not: the default-assignee rule and the prerequisite ordering of xtiles_get_current_user, which materially changes how the agent calls the tool.

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, front-loaded with the action and scoping, then the prerequisite rule. No filler, no restatement of the name or schema.

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?

An output schema exists, so return values need not be explained, and all parameters are documented. The description covers creation scope and the assignee default. It does not mention the required 'title' on each task or any batch/partial-failure behavior, which is a minor gap for a multi-item create.

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 baseline is 3. The description adds meaning on top of the schema: projectId omission means personal tasks, and assignees default to the current user when unspecified. That is genuine semantic value beyond the field descriptions.

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+resource ('Create one or more tasks') and immediately scopes it (project vs. personal). This clearly distinguishes it from update_task/delete_tasks siblings, though it does not explicitly name any sibling. The core purpose is 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 concrete conditional guidance: include projectId for project tasks, omit for personal tasks, and when no assignees are supplied, call xtiles_get_current_user first and default to the current user as assignee. That is a real workflow rule. It stops short of naming alternative creation paths (e.g. create_tiles_from_markdown_*), so not a 5.

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