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

Annotations already establish readOnlyHint=true and destructiveHint=false. The description adds useful scope (account-level, Slack/Discord) and return-surface detail (webhook + enabled state), but does not cover pagination, rate limits, or auth expectations. No contradiction with annotations.

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?

A single sentence that front-loads the verb, scope, and output fields with no filler or redundant restatement of the title.

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 parameterless, read-only list operation with an output schema present, the description gives enough context: what is listed, at what scope, and which details are exposed. No additional operational guidance is needed to make the call.

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 has zero parameters with 100% schema coverage, so the description has no parameter burden to carry. The baseline of 4 for a parameterless tool applies; no parameter semantics are needed.

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?

Description uses the imperative 'List' with a specific resource, 'the account's configured Slack/Discord notification channels', and names the key returned aspects ('webhook + enabled state'). This clearly differentiates it from mutation siblings like set_notification_channel/delete_notification_channel and from list_notifications, which concerns notification messages.

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?

No explicit when-to-use or when-not-to-use guidance is given. The phrase 'configured notification channels' implies a read-before-configuring context, but the description does not name alternatives or state when this should be chosen over get_notification_preferences or set_notification_channel.

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