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

With no annotations present, the description carries the behavioral disclosure burden. It discloses that webhooks are HTTP POSTs, signed for verification, scoped to one URL per tenant, and that remove stops them. It does not mention permission requirements or response handling, but for a configuration tool these are the key behaviors and are covered.

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 concise and front-loaded with the primary action 'set' and its behavior. However, the trailing 'Record.' is an unclear fragment that seems to add no value and could confuse an agent. The overall structure is otherwise efficient, but this stray word costs clarity.

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?

While the schema covers parameters well, the description omits an explicit statement that 'set' requires a URL, which the schema implies but does not enforce (only action is required). The mystery 'Record.' suggests incomplete editing, and there is no information about the response or result of the operations. For a tool with no output schema, the description should clarify these 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 schema provides 100% description coverage for url, action, and secret, so the baseline is 3. The description adds the 'one URL per tenant' constraint and the signing detail, which are useful global context, but it does not add much parameter-specific meaning beyond the schema. The conditional requirement of url for set is mentioned in the schema, and the description doesn't reinforce it.

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 communicates a webhook configuration tool with two actions: set and remove. It specifies the event trigger (held/escalated actions) and the signing behavior, making the tool's purpose evident. It doesn't explicitly contrast with siblings, but none of the listed tools serve a similar webhook function, so differentiation is not needed.

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 implies usage context by explaining when webhooks fire (when an action is held or escalated), which tells an agent when to set one up. However, it offers no explicit guidance on when to choose this tool over alternatives, nor any exclusions or prerequisites. The instruction to use set vs. remove is clear, but broader decision guidance is absent.

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