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

With no annotations, the description carries the full burden. It usefully discloses two negative side effects (no account creation, no email sent), which is real behavioral context. It does not cover auth requirements, rate limits, or what success returns, so transparency is only partial.

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, front-loaded sentences with no waste. The core action is stated first and the side-effect caveat follows, which is efficient for a tool of this simplicity.

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 6-parameter tool with 0% schema coverage, no annotations, and no output schema, the description is far too thin. It omits the meaning of the optional fields (company, useCase, website) and any notion of what submitting produces.

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 description coverage is 0% across 6 parameters, so the description must compensate but does not. Only 'contact consent' loosely gestures at the consent field; name, email, company, useCase, and website are entirely unexplained.

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?

States a specific verb+resource: 'Request alpha participation' maps cleanly to joining a waitlist, and the name waitlist_join confirms it. It does not explicitly name sibling actions (waitlist_update, waitlist_delete), but the create/join intent is unambiguous.

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?

'Does not create an account or send email' implicitly routes the agent away from account_register for those goals, giving some usage context. However, there is no explicit when-to-use statement or named alternative (e.g. platform_access_request), so guidance is only implied.

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