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

"Requires API key" adds authentication context not present in the annotations, which is genuine value. However, annotations already declare destructiveHint=true and readOnlyHint=false, and the description does not clarify what that destructiveness means for a ticket update — whether status transitions are reversible, whether changes notify the requester, or whether audit history is retained.

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, front-loaded with the verb and resource, with no filler. The second sentence packs usage and auth prerequisites compactly, though "on OTP" is jargon that costs a little clarity for its brevity.

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 five-parameter mutation tool with no output schema, the key unanswered question is whether this is a partial patch (only supplied fields change) or a full replace, plus what is returned on success. Annotations cover the safety profile and the schema covers params, but the patch semantics are left to inference.

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%, so each of the five parameters is already documented with enums for status and priority, making 3 the baseline. The description only echoes the schema by naming resolving issues, agent notes, and status, adding no format, interaction, or validation detail beyond it.

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 resource ("Update a ticket") and names concrete operations (resolve issues, add agent notes, change status). It is clearly distinguished from submit_ticket and list_tickets, though the acronym "OTP" is never expanded and the sibling set_issue_status shows there is a nearby status-mutation concept the description does not address.

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?

"Use to resolve issues, add agent notes, or change status" gives concrete when-to-use contexts rather than leaving usage implicit. It stops short of naming exclusions or pointing at alternatives (e.g., when to use set_issue_status or submit_ticket instead), so there is no full when-not guidance.

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