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

With no annotations, the description carries the full burden of disclosing behavior. It does state a Bearer token is required, which is useful, but it fails to explain whether the update is partial or full, whether existing fields are overwritten, what happens to events when omitted, or what response/error behavior to expect. For a mutating tool, this is a significant transparency gap.

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 short and front-loads the core action, which is good, but the fragmented style ('Fleet/Platform. Requires Bearer.') reduces readability. It is concise without being elegantly structured, and several words are ambiguous rather than informative.

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 4-parameter mutation tool with no output schema and no annotations, this definition is incomplete. It omits required parameter semantics, update semantics, error behavior, and any guidance for distinguishing among six webhook-related sibling tools. An agent cannot reliably invoke this tool correctly based on the description alone.

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%, so the description must compensate, but it only repeats the property names 'url, events, or active' without explaining formats, allowed event values, or the role of the required 'id'. It adds no meaning beyond the raw schema and omits the only required parameter. This is insufficient for an agent to construct a correct request.

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 and resource, 'Update url, events, or active', clearly indicating this tool modifies an existing webhook. It is distinguishable from sibling tools like register_webhook, list_webhooks, and delete_webhook, though it does not explicitly name them. The 'Fleet/Platform' phrase adds mild context but does not hurt overall clarity.

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 provides only a terse hint ('Fleet/Platform. Requires Bearer.') and no guidance about when to choose this tool over alternatives. It does not mention the required id, prerequisites beyond Bearer auth, or relationship to register_webhook/delete_webhook/list_webhooks. An agent is left to infer when this update path is appropriate.

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