catalog_create_or_update

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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false, and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that: it does not say whether an existing branding is fully overwritten, what permissions are needed, which organization is targeted, or what the response contains. Note the mild tension between the 'creates or updates' upsert framing and idempotentHint=false, but this is not a direct contradiction.

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 short lines with the action front-loaded. The trailing 'POST /notification/api/scenario-branding' restates what the annotation title already carries, so it is mild redundancy rather than value.

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 single-body-parameter tool with a fully described schema this is nearly sufficient, but the description says the branding belongs to 'an organization' without indicating how that organization is identified (presumably from the authenticated session) and gives no hint about the returned payload since there is no output schema.

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 coverage is 100%: footer and header are documented in the schema and the body wrapper is described. The description adds no meaning beyond the schema (e.g. format, length limits, or the effect of the undocumented 'customized' flag), so the baseline 3 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?

The description states a specific verb pair and resource: it creates or updates the notification scenario branding of an organization, and the upsert semantic is explicit. It does not name the closely related siblings (catalog_delete_scenario_branding, catalog_get_scenario, catalog_preview_notification_config), so the agent must infer the boundary from the resource name alone.

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 guidance on when to call this versus catalog_delete_scenario_branding or catalog_preview_notification_config, no statement of prerequisites, and no explanation of how the create-vs-update branch is selected (existing branding vs. none). The agent is left to infer everything about context of use.

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