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

Annotations already establish readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the safety bar is low, but the description adds nothing on top of them. Critically, real destructive-ish behaviors live only in the schema (an empty callback.url removes the webhook, and rotate_callback_secret invalidates the old signing secret) and are never surfaced in the description.

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 text is short, but it is not concise so much as under-specified: the single sentence duplicates the title and carries no additional payload, so it earns little of 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 mutation tool with a nested callback object, an enum-bearing events list, secret rotation, four optional parameters and no output schema, this one-line description leaves out update semantics, partial-update behavior, and the destructive effects of emptying the callback or rotating the secret.

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 only 25%: callback.url and rotate_callback_secret are documented, but callback.type, callback.events, interests and capabilities have no descriptions in either the schema or the description. The description merely names three of the four parameter groups without explaining accepted formats or semantics, so it fails to compensate for the coverage gap.

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?

Tautological: description restates name/title.

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?

There is no when-to-use guidance at all: nothing about when an agent should call update_me versus get_me to inspect its profile, no prerequisites, and no note that this is a partial-update (all four fields optional).

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