create_webhook

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

No annotations are provided, so the description carries the transparency burden. It discloses that the tool creates a disposable inbox and returns token, URL, email, and DNS, and it outlines the intended workflow. It omits persistence/cleanup details, but the core creation and return behavior are clearly conveyed.

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 compact and well-structured: the first sentence defines the tool, the second states when to use it, and the third gives the downstream workflow. Every sentence earns its place, with no filler or redundant schema 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 a zero-parameter creation tool with an output schema, the description provides complete operational context: purpose, trigger conditions, returned values, and recommended next steps. An agent can determine when to invoke create_webhook and how to proceed afterward without additional information.

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 has zero parameters, so there is no parameter-level semantics for the description to add. The description contributes value by explaining the returned fields (token, url, email, dns), which satisfies the baseline for a parameterless tool.

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 uses a specific verb ('Create') and resource ('disposable inbox'), and enumerates concrete capabilities: HTTP URL, temp email, and DNS. It clearly establishes that this is the default first step for sign-up/verification workflows, distinguishing it from more specialized siblings.

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 lists when to use the tool: signing up, receiving verification/magic-link/password-reset emails, catching webhook callbacks, or getting a one-off URL. It also provides the recommended follow-on sequence (wait_for_email, follow_email_link/OTP), but it does not explicitly contrast it with create_webhook_with_config or state when not to use it.

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