trybiut_auth_register

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

No annotations are provided, so the description carries the full behavioral disclosure burden. It does state that the tool starts registration and returns a signup link plus steps, but it does not clarify whether an account is actually created, whether this is an external redirect flow, or whether repeated calls have side effects. This is adequate but not rich.

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 sentences deliver the purpose, outcome, and return value with no filler. The most important information is front-loaded, and every word earns its place.

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?

Given the tool's low complexity, one optional parameter, and no output schema, the description covers the essential points: what it initiates, why, and what the caller receives. It falls slightly short of a 5 because it does not mention that the actual account creation is likely completed outside the tool via the returned signup 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 input schema already documents the only parameter, email, with 100% coverage, including the important note that it is only echoed and never sent. The description adds no parameter-level detail, but with full schema coverage the baseline of 3 is appropriate.

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 clearly states a specific action ('Start registration') on a specific resource (trybiut.com) and explains why the user would do it ('so you can later use private tools'). It also names the expected result ('Returns the signup link + steps'), and it is easily distinguished from the sibling tools, none of which cover registration/auth.

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 gives clear context for when to use the tool: when the user needs to register in order to access private tools. It does not explicitly enumerate when not to use it or name alternative tools, but no sibling tool serves the same purpose, so the guidance is sufficient.

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