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

Annotations cover readOnlyHint=false and openWorldHint=true, but the description adds real value beyond them: the linked-ticket propagation behavior, and the meaning of replay-sensitive codes filed_unrecorded and outcome_unknown (ticket may already exist) plus not_attempted. This is exactly the non-idempotent context an agent needs. It stops at 4 because permission/role requirements and ordering are not described.

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?

Front-loaded clause is tight, but the body is one long error-code dump of 21 identifiers that swamps the actual purpose and buries the three explanatory sentences at the end. The enumeration consumes the majority of the text and is not grouped or scannable.

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?

Covers the side effect and the ambiguous failure modes, which is genuine complexity for a mutation tool, but there is no output schema, no statement of return value, no auth/permission prerequisites, and params remain partly undocumented. Adequate but with clear gaps.

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 33%, so due_date is documented as YYYY-MM-DD, but threat_entry_id and assignee_member_id (including nullable semantics meaning 'unassign') are undocumented in both places. The description adds the meaning of the two fields being set but no per-parameter detail, so it does not compensate for the coverage gap.

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 ('Set the owner and due date of a threat entry') and adds a notable side-effect ('the linked ticket follows'). It does not differentiate from siblings like sync_threat_tickets or file_threat_tickets, so it stops short of a 5.

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?

No explicit when-to-use or when-to-avoid guidance, and no mention of alternatives such as sync_threat_tickets or file_threat_tickets. The error taxonomy implies context but never says when an agent should reach for this tool.

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