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

The annotations mark this as a non-read-only, non-idempotent, open-world operation; the 'once for each link_id' clause usefully explains the non-idempotency. Because the annotations already cover the safety profile, the description still omits key behavior: what happens on a duplicate send, whether errors are returned, and what success looks like. It also mentions 'folder paths,' which do not appear in the schema and can confuse the agent about available inputs.

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 short sentences, with the core action and the essential-input statement front-loaded. The clause about folder paths is the only wasted or misleading content.

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 mutation tool with no output schema and no annotations explaining the outcome, the description should say what a successful send produces and how a repeat send for the same link_id behaves. The 'once per link_id' constraint hints at this but never states it, leaving the agent to infer failure behavior.

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 coverage is 100%, so all three parameters are already documented; this sets the baseline at 3. The description reinforces that share_link alone is sufficient and extra_links is optional, but that duplicates the schema. The 'folder paths' mention refers to input that does not exist and adds no real meaning.

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: sending the share link to Vari8ion. It clearly scopes the tool to the step of sending a link that was already set up through start_project_link. It does not explicitly contrast this tool with the sibling get_link_status, so initially it is unclear whether the link is sent or its status is checked.

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 can be sent once for each link_id' gives a usage constraint, and the schema-driven reference to link_id implies this follows start_project_link. However, the description never says when not to call this tool or what to do if a send was already attempted. The description only implies the context instead of stating it outright.

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