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

Annotations already declare read-only, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds real value beyond that with the prompt-injection warning about untrusted CRM field values, which is not encoded anywhere in the structured fields. No return format or pagination notes, but the annotation coverage keeps the bar low.

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 core content description is front-loaded in the first sentence, followed by the downstream-usage pointer and then the safety note. No redundant restatement of the name or annotations, though the untrusted-content sentence reads slightly like boilerplate.

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 read-only catalogue tool with no output schema, the description adequately enumerates what comes back (objects, supported actions, five role actions) and flags the untrusted-input concern. It could note the expected size/format or whether custom objects require extra scope, but nothing critical for correct invocation is missing.

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?

Only one parameter (workspaceId) and schema description coverage is 100%, so the schema already explains the multi-workspace requirement. The description adds nothing about the parameter, which is the expected baseline-3 outcome when the schema does the heavy lifting.

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 ('Lists') and a precise resource: the objects a role or member rule can name, the actions each supports, and the five role actions. This is clearly distinguishable from a generic object listing, though it never explicitly contrasts itself with siblings like list_objects or describe_object.

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 routes the consumer: 'Use the object keys here in set_role_object_access and set_member_access_overrides.' That tells the agent why the output matters and where it feeds. It lacks any when-not or alternative-selection guidance against get_role/list_roles, so not a full 5.

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