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

Annotations already mark this as non-read-only, non-idempotent, non-destructive, and open-world. The description adds important behavior beyond that: membership is required, the ticket expires after 5 minutes, and a link is returned. It could say more about whether each call creates a new ticket, but the key behavioral traits are disclosed.

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?

The description is a single efficient sentence with the membership requirement and return value front-loaded. It is appropriately sized for a simple ticket-issuing tool, though the phrase 'a ticket valid 5 minutes' is slightly compressed.

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 two-parameter tool with no output schema, the description covers the return value (ticket and link), expiry, and authentication prerequisites. However, the required `space` argument is entirely unexplained, which is a notable gap given 0% schema description coverage.

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 0%, so the description must explain both parameters. It clarifies that `key` is an authentication alternative to sign-in, but it never defines the required `space` parameter, leaving the most important input undocumented in both schema and description.

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 identifies the resource precisely: a short-lived ticket plus the link that opens a board. It does not explicitly use a verb like 'issue' or name the sibling space_board_check, but the ticket-and-link framing distinguishes it from a simple access check.

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 gives prerequisites ('Members only', 'Needs key or sign-in') but does not say when to call this instead of space_board_check or other space tools. The usage context is implied rather than explicitly routed.

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