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

The description discloses single-use, expiry, and chat binding, and notes that opening the link grants the full review experience; these are meaningful behaviors beyond the annotations. It does not describe the response payload, but for a low-risk link-creation tool this is not a major omission.

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?

Four sentences, all relevant: the purpose is front-loaded, the user experience is summarized, the delivery_configure pairing is stated, and the expiry behavior is closed with an action. No filler or repetition.

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 two parameters with 100% schema coverage and no output schema, the description explains the workflow, the single-use/expiry behavior, and the integration point with delivery_configure. The only minor gap is not explicitly stating the return value, but this is implied by 'mint a link' and 'hand the link.'

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 already documents both parameters with descriptions and bounds (brand slug, ttl_minutes default/max/min), so the description does not need to repeat them. It adds only general advice about expiry and minting another link, which reinforces rather than extends the parameter documentation.

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 opens with 'Mint a single-use link that connects a human's Telegram chat to this brand, so they can review and approve content in chat,' which uses a specific verb and resource and clearly distinguishes it from siblings like social_connect_link and delivery_configure. It precisely states the purpose and the review/approval workflow.

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?

The description explicitly tells the agent to pair this with delivery_configure approval_mode 'gate' to require approval before content is delivered, and notes when to mint a replacement if the link goes unused. It does not explicitly list exclusions or alternative tools, but the pairing condition provides clear contextual guidance.

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