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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, and destructiveHint=false. The description adds meaningful context beyond those annotations: the deck is sent to Fulin Labs, the resulting link is publicly readable by anyone with it, and repeating the call may create another deck.

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 four sentences, front-loads the usage condition, and every sentence adds useful information about when to call, what happens, and what to avoid. There is no redundant or filler text.

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?

Given the rich input schema, output schema, and annotations, the description is complete enough for correct invocation. It covers usage conditions, public-link behavior, and duplicate-call risk, leaving no critical gap for an agent deciding whether to call it.

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 the schema already documents the title, cards, and language parameters in detail. The description does not add parameter-level syntax or constraints beyond what the schema provides, so the baseline of 3 is appropriate.

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 action and resource: it sends a supplied deck to Fulin Labs and creates a persistent shareable deck link. It distinguishes this from previewing or studying a deck, but it does not explicitly differentiate from the sibling create_flashcard_deck tool.

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?

It gives clear triggering conditions: the user explicitly asks to save/share on the website, or chooses Learn on website in the study widget. It also gives a clear when-not condition: do not call merely to preview or study a deck. It does not name an alternative sibling tool for non-website deck creation.

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