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

Annotations already declare readOnly/idempotent/non-destructive, and the description adds non-obvious governance context: approvals are administrator-configurable but business workflow approvals always apply. That is genuine information an agent cannot get from the flags. It stops short of saying what the preview surfaces or whether it expires.

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?

Two tight sentences, front-loaded with the action and its purpose. The second sentence is governance context rather than filler, though 'configurable by the organization administrator' is slightly soft.

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?

With no params, a rich annotation set, and an output schema describing the preview payload, the description covers the decision-relevant surface. The only gap is the missing hand-off to the authorizing/sync tool, which an agent must find itself in a very large sibling list.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; baseline applies.

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?

States a specific verb (read the preview) and resource (incidentvault synchronization), and frames it as the step before authorizing external changes. It is not explicitly contrasted with sync_incidentvault_locations or the other preview_* siblings, so it is clear but not fully differentiated.

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?

'Read ... before authorizing external changes' implies the sequencing: preview first, then commit. However, it never names the follow-up tool (sync_incidentvault_locations / execute_approved_action) or says when the preview is unnecessary, leaving the agent to infer the workflow.

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