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

Annotations already declare destructiveHint=true, but the description adds concrete consequences the agent can't get from structured fields: codes stop working immediately, operation is irreversible, and user approval is a hard prerequisite. It also discloses the underlying GET-then-DELETE sequence, which explains latency/validation behavior.

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 dense sentences with the destructive warning front-loaded and the approval workflow immediately after. The trailing 'GET /coupons/{id}, then DELETE /coupons/{id}' is implementation-level noise that doesn't help the agent decide or invoke, slightly diluting an otherwise tight definition.

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 destructive two-parameter mutation with no output schema, the description covers everything needed: what is destroyed, irreversibility, the approval gate, the required confirm flag, and the read-before-write sibling. Nothing essential 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?

Schema coverage is 100% and the schema already documents confirm as a const-true approval flag and coupon_id as a positive integer. The description reinforces confirm: true but adds no new format or semantic detail beyond what the schema provides, so baseline 3 applies.

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+resource ('permanently delete a coupon'), names the target system scope ('live TicketSpice account'), and flags it as WRITE. Clearly distinguishable from its read-only siblings like ticketspice_get_coupon and ticketspice_list_coupons.

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 prescribes the precondition sequence: fetch with ticketspice_get_coupon, obtain user approval, then call with confirm: true. This names the sibling to use first and the gate that selects invocation, leaving nothing to inference.

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