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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=true, covering the safety profile. The description only restates an 'update' and adds a vague privacy-filtering note; it says nothing about what is overwritten, whether re-queuing replaces existing tasks, or how parentVersion conflicts are handled. With annotations present, added behavioral value is minimal.

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?

It is a single front-loaded sentence with no filler, which is structurally clean. However, given a 7-parameter mutation with a nested task array, one vague sentence is under-sized rather than genuinely concise.

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 complex mutation with no output schema, a nested tasks array, and only 71% parameter coverage, the description omits far too much: what a queue instruction task is, how it relates to parentTaskId/parentVersion, idempotency/retry behavior, and how it differs from sibling update tools. An agent cannot call this correctly from the definition alone.

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 71%, so several parameters are undocumented, and the description adds no parameter meaning at all. Notably it never explains the required nested tasks payload, parentVersion, or why idempotencyKey is required, leaving the coverage gap unaddressed.

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?

The description gives a verb ('Update') and a resource ('hosted queue instruction tasks'), so it is not tautological, but the resource is jargon that is never defined and the phrase 'using privacy-filtered project metadata' is ambiguous. It does nothing to distinguish this tool from close siblings such as update_queue_item, control_instruction_task, or submit_project_task.

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?

There is no guidance on when to use this tool, when not to, or which sibling it replaces. With siblings like update_queue_item and control_instruction_task in the set, the absence of any routing rule leaves the agent to guess.

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