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

With no annotations, the description carries the burden of disclosing behavior. It does reveal that the URL is public and that webhooks are buffered, but it omits key traits such as retention limits, expiry, authentication requirements, or what happens to uncollected webhooks.

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?

A single sentence that efficiently conveys the tool's purpose without filler. 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?

For a simple tool with optional parameters and no annotations, the description provides a basic understanding but lacks important context such as return value (the URL) and lifecycle details. Given the low complexity, this is adequate but leaves gaps.

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 description does not mention either the 'days' or 'label' parameters, leaving the schema's incomplete descriptions (especially label's empty description) unaddressed. With 50% schema coverage, the tool description should compensate but doesn't.

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 explains the tool creates a public URL that buffers inbound webhooks, which conveys its core function. It is specific about the resource and action, but it does not explicitly contrast with sibling tools like collect_messages or create_queue, so it stops short of full differentiation.

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?

No guidance is given on when to use this tool instead of alternatives such as create_queue or create_frontdoor, nor are any prerequisites or exclusions mentioned. The intended use case is only implicit from the phrase 'until you collect them.'

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