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

Beyond the annotations (write, non-destructive), the description discloses a lot an agent cannot infer: required entitlements, branding always coming from the owning account, transcription off unless requested, the 5-minute owner reminder behavior, no calendar sync/invites, and requestId reuse to avoid duplicates. The requestId dedup is a nuance against idempotentHint=false, but it is a client-supplied key rather than a claim that repeated calls are inherently idempotent, so it is additive rather than contradictory.

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?

The purpose is front-loaded, but the body runs to roughly eleven sentences and mixes invocation guidance with output-presentation instructions (guestUrl/hostJoinUrl labels, 'do not call it a control panel'). Several defaults are restated from the schema, so the definition is information-dense rather than tight.

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?

There is no output schema, and the description compensates by describing the two returned links, their labels and language handling. Combined with prerequisites, defaults, reminder behavior, and CRM-linkage edge cases, an agent has everything needed to call this correctly and report the result.

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 67%, and the description covers most parameters contextually: explicit timezone-resolved startsAt, default 60-minute duration, transcription off by default, host reminder semantics, and the customer-vs-leadId resolution/ambiguity rule. Some content (duration default, transcription default) merely repeats schema defaults, and locale is only referenced obliquely via 'in the user's language'.

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 opening sentence gives a specific verb, resource and scope: 'Create a branded oriiion video meeting in the authenticated user's My business workspace.' It further sharpens the boundary with 'This only creates the room: it does not invite anyone, sync calendars, start recording or join the meeting,' which cleanly separates it from siblings like prepare_meeting_link, get_meeting and list_meetings.

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?

It states prerequisites (Business Suite, a customer instance, the Meetings grant), routes the agent between 'customer' and 'leadId' with a verification rule (leadId 'already verified with get_website_leads'), and instructs clarification on ambiguous matches. It stops short of explicitly naming the adjacent alternatives (e.g. prepare_meeting_link, link_meeting_customer), so the when-not-vs-sibling routing is only implied.

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