send_dice

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

Annotations already declare readOnlyHint=false, idempotentHint=false, openWorldHint=true, and destructiveHint=false; the description's 'random value' only loosely explains the non-idempotence. It says nothing about permissions, what the resulting message looks like, whether it can be edited or deleted afterward, or behavior of the many optional delivery parameters.

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?

A single front-loaded sentence with no filler or redundancy. It is efficiently written, though the brevity comes at the cost of the missing semantics noted elsewhere rather than being genuinely complete.

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 12-parameter messaging tool with no output schema and low schema coverage, one sentence is far short of adequate. An agent cannot tell the supported emoji set, the default, or what any of the eight Telegram-specific delivery options do.

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 only 33% across 12 parameters — only chat_id is documented. The most important semantic, which values of 'emoji' are legal and what the default is, is absent from both schema and description, and nothing is said about reply_markup, protect_content, or thread targeting.

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?

Names a specific verb and resource ('Send an animated emoji') and states the distinguishing behavior ('displays a random value'), which separates it from send_sticker and send_message. It never says which emoji are supported (dice, dart, basketball, etc.), so the resource is only partially defined.

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?

There is no guidance on when to choose this over send_message, send_sticker, or send_poll, nor any mention of chat requirements or prerequisites. The agent must infer that this posts a message into a chat like its siblings.

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