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

Annotations only declare readOnlyHint=false, so the description correctly signals a mutation and adds the non-obvious admin+ authorization requirement. It does not say what happens if no ban exists, whether the operation is idempotent, or what errors are returned.

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?

Two short sentences, action first then constraint, with zero filler. Appropriately sized for a trivial two-parameter mutation, though it could have used one more clause on behavior at no real cost.

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 simple mutation with full schema coverage and no output schema, the description covers action plus authorization. It is still thin on side effects and failure modes, which matter for an admin-level moderation action.

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% and both parameters document their UUID format and provenance (mIRC_list/mIRC_create, mDM_list_contacts), so the schema carries the load. The description adds nothing about the parameters, making baseline 3 correct.

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 and object ('Lift a ban'), which unambiguously identifies the inverse of the sibling mIRC_ban. It is clear without opening the schema, though it never names the sibling 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?

The prerequisite 'Requires admin+' is stated, which implies when the tool is callable, but there is no guidance on when to prefer it over alternatives (e.g. mIRC_update, mIRC_kick) or what preconditions must hold (an active ban on that identity).

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