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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered structurally. The description usefully adds the required purchase_orders:write scope, but says nothing about what exactly is unlinked, whether the link record is recoverable, or side effects on the parent purchase order.

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, zero filler, with the action front-loaded and the authorization requirement as a follow-on constraint. Nothing could be trimmed without losing content.

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 single-parameter, fully annotated delete with no output schema, the description covers purpose and the auth scope an agent needs. Minor gap: no statement about irreversibility or whether linked data elsewhere is affected.

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% (the single id parameter is fully documented as a UUID "Purchase order link ID"), so the baseline is 3. The description adds no further information about the identifier beyond what the schema provides.

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 states a specific verb and resource ("Remove a purchase order link"), which is clearly distinguishable from delete_purchase_order and delete_purchase_order_line by the resource noun. It does not, however, explicitly contrast itself with those near-identical siblings.

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 when-to-use or when-not-to-use guidance, and no mention of alternatives (e.g., using delete_purchase_order when the whole order should go). The only contextual note is the required scope, which is an authorization fact rather than usage guidance.

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