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

Annotations already declare readOnly=false, idempotent=true and destructive=false; the description adds the important operator-facing constraints that were not encoded anywhere else: the required permission scope, the rights-confirmation attestation, and the negative scope ('no payment, procurement or outreach'). It does not explain what visible state change results or whether the publication is reversible, which would have pushed this higher.

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?

The permission and rights preconditions are front-loaded, and every clause carries weight (permission, attestation, capability boundary, negative scope). The telegraphic phrasing makes it dense to parse, but there is no filler.

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 six-parameter, nested-object, non-idempotent-looking mutation with no output schema, the prerequisites are well covered but the call mechanics are not. An agent still lacks guidance on the confirm flag, idempotency semantics, and audience shape, which are the highest-risk parts of invoking this correctly.

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 0% across six parameters, including a nested audience object with mode and buyer_public_ids. The description only loosely gestures at rights_confirmed ('confirmed content rights') and expected_version ('this exact ... version'); it says nothing about confirm, idempotency_key, or the audience/restricted-buyer mechanism, leaving the agent to infer required fields from the schema alone.

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 specific verb-plus-resource ('Publish this exact owner product version') and draws a clear boundary against adjacent capabilities ('publication is distinct from available payment/supply capability'). It is identifiable against siblings like evuun_set_business_product_price or evuun_update_business_product, though the reference to 'inspect published_readiness' is not a listed sibling, so the routing hint is somewhat opaque.

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?

It states real preconditions: products:publish permission, confirmed content rights, and independently confirmed current terms. It also warns that publishing does not imply payment or supply capability, which steers the agent not to conflate these workflows. It stops short of naming an explicit alternative tool or when not to publish at all.

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