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

Annotations already declare readOnlyHint=false, idempotentHint=true, non-destructive, closed-world. The description adds nothing beyond them: it does not say what accepting entails (mutual friendship, notification, effect of a stale/unknown friendship_id), nor what an error looks like. For a mutation tool this is a real gap, though annotations carry the safety profile.

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 short sentence with no wasted words, but the brevity comes from under-specification rather than disciplined writing; nothing is front-loaded beyond the restated title.

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?

The tool is simple (one required ID, no output schema) and annotations cover safety, but the description still omits the outcome of accepting, what constitutes success or failure, and the idempotent behavior the agent should rely on when retrying.

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?

Only one parameter with 100% schema coverage, and the schema description already points to dandori_list_friends for obtaining the ID. The description adds no further meaning, which is acceptable at full schema coverage but no more than baseline.

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 verb and resource ('Accepter une demande d'ami reçue'), so the action is identifiable, but it is essentially a restatement of the title 'Accepter une demande d'ami' and gives no scope or differentiation from any sibling 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?

There is no guidance on when to use this versus alternatives, no prerequisite that a pending request must exist, and no mention of what happens on the requester's side. The agent must infer all usage context.

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