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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered by structured data. The description adds only that the target must be a pre-existing asset; it says nothing about pagination, time-windowing, or the shape of the history, so it clears the lowered bar but adds little.

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 lean sentence with no redundancy, though the boilerplate opener 'This endpoint' is a small waste of the leading, most-scanned position.

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?

An output schema exists, so return values need not be described, and annotations cover safety. What is missing is disambiguation from the many live-asset and analytics siblings; for a read tool in a crowded namespace, this leaves a real selection gap.

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 100% for the single live_asset_id parameter, so the schema carries the meaning. The description reinforces that the id refers to a previously created asset but adds no format or syntax detail beyond it — baseline 3.

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 (retrieves) and resource (history of a live video asset), which is enough to distinguish from create_live_asset or delete_live_asset. However, it never contrasts itself with the closely related get_live_asset_status or live_usage_analytics, so an agent must infer what 'history' means versus 'status'.

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 a faint precondition ('previously been created'), implying the asset must already exist, but the description gives no explicit when-to-use guidance and names no alternative tool. Several siblings (get_live_asset_status, asset_analytics) plausibly overlap, and the agent is left to guess which to pick.

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