regenerate_mp4

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

Annotations only indicate non-readOnly, non-destructive, non-idempotent. Description adds asynchronicity and recommended wait time, which is valuable behavioral context beyond annotations. Could mention error handling or side effects, but sufficient for a simple trigger.

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?

Three sentences, no redundancy. Purpose first, then usage condition, then post-action steps. Every sentence earns 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?

Given the tool's simplicity, annotations, and presence of output schema, the description covers the essential workflow. Could mention what happens if the video doesn't exist or regeneration fails, but it's adequate for effective use.

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% for the single parameter 'video_id', so baseline is 3. Description adds no additional meaning beyond what the schema already provides ('The Loom video ID').

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 clearly states the action ('Trigger MP4 regeneration') and the resource ('for a Loom video'), and distinguishes from siblings like get_download_url by specifying the condition for use.

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?

Explicitly states when to use the tool ('when get_download_url reports that no URL is available') and provides post-trigger guidance (asynchronous, wait 30s, retry). No explicit exclusions, but the context is clear.

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