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

Annotations already declare destructiveHint=true and openWorldHint=true; the description supplements them usefully by stressing "envoi réel" (an actual dispatch, not a simulation) and by scoping the recipients to contacts subscribed to the project's bot, implying a broadcast rather than a single message. It stops short of saying the send is irreversible or how many recipients are affected.

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?

Two short sentences, the action and audience front-loaded and the prerequisite placed second. 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?

For a destructive outbound-send tool with no output schema, the definition omits the single most important detail an agent needs: what the required "id" refers to. The prerequisite and audience scope are covered, but the call cannot be constructed reliably from this description.

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?

There is one required parameter, "id", and schema description coverage is 0%, so the description must carry the meaning. It never says what the id identifies (a message draft, a campaign, a contact?), leaving the agent to guess.

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 concrete verb+resource: it launches the actual sending of a Telegram message to the contacts subscribed to the project's bot. The channel and audience are explicit, which separates it from send_sms, send_whatsapp and send_newsletter, though no sibling is named directly.

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?

"Connexion Telegram requise" is a real prerequisite that tells the agent a Telegram connection must exist first. Beyond that there is no when-to-use/when-not guidance and no mention of alternatives such as a draft or preview path.

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