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

Annotations already declare destructiveHint=true for the whole tool, so the description's explicit 'deleteUserTheme is destructive' adds per-action granularity — it clarifies that only the delete action is destructive rather than the entire write surface, which prevents over-caution on create/update. It does not cover auth requirements or reversibility beyond that.

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 framing sentence followed by a tight per-action bullet list; the destructive caveat is front-loaded in the first line. No filler.

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?

Covers all four operations and their required arguments, which is the bulk of what an agent needs for a tool with no output schema. It stops short of describing response shape or what a successful update/delete returns, a minor gap given the schema's generic params container.

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?

The schema only documents a generic action enum and an opaque 'params' object, so the description carries the real payload semantics: it maps each action to its path/body params and clarifies formats the schema omits, e.g. 'name: Unique per account' and the token being usable 'with or without the URL around it'.

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 opening sentence names a specific verb set (create/update/delete/import) against a specific resource (user's saved framework themes, plus shared snippet import). It also enumerates each concrete operation, so an agent can distinguish this write tool from the sibling AccountThemesReadTool without opening a 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?

Each action is spelled out with the parameters it needs, which tells the agent which operation to select for a given intent. It does not, however, state when to prefer this tool over AccountThemesReadTool or give prerequisites/exclusions.

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