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

With no annotations, the description carries the full burden and does fairly well: it discloses the access is read-only, time-bounded to 1–72 hours, contingent on explicit owner/admin approval, and that the reason is visible to those approvers. It leaves out what the call returns, whether duplicate or overlapping requests are allowed, and what happens on denial.

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?

Four short sentences, audience and scope front-loaded, no filler. The only weak spot is 'Requires support', which is terse to the point of ambiguity about what prerequisite it refers to.

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 3-parameter, no-output-schema, no-annotation mutation-adjacent tool, the description covers the essentials an agent needs: authorization model, approval gate, duration bounds, and the visibility of the reason. It stops short of describing the outcome (request ID, pending state) or interaction with platform_access_list and platform_access_end.

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 0%, so the schema supplies types and constraints (1–72, default 4, UUID pattern, 500-char reason) but no semantics. The description adds real meaning for two of three parameters — 'hours' is the access duration and 'reason' is shown to the approving owners/admins — but says nothing about workspaceId and omits the 4-hour default.

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 action on a specific resource: asking a workspace's owner/admins for read-only support access for 1–72 hours. That is enough to separate it from platform_access_end (releasing access), platform_access_list, and support_approve/deny, though it never names those siblings explicitly.

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 gives preconditions ('Platform staff only (account session)', 'Requires support') and the gating rule ('Nothing is accessible until they approve'), which implies the request must precede any access. But it never states when NOT to use it or how it relates to platform_access_end or support_approve, so the routing guidance is only implied.

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