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

No annotations are provided, so the description carries the full burden. It does disclose two key behaviors: it runs validate-only and defaults primary_for_goal to false. This adds useful context but does not mention side effects, whether anything is actually persisted, or how errors are reported. For a prepare step with no output schema, more behavioral disclosure would be expected, so a 3 is appropriate.

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 description is two concise sentences with no redundancy. The main purpose and key behavior (validate-only) are front-loaded, and every word adds value. It is efficiently structured for agent consumption.

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?

With 11 parameters, 3 enums, no output schema, and low schema coverage, this is a moderately complex tool. The description only covers the resource type and one default, leaving out what the tool returns (e.g., an ID or receipt), how validation results are communicated, and any guidance on prerequisites or relation to the confirm step. This is incomplete for an agent to use it effectively.

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 only 9%, with only customer_id described in the schema. The description adds meaning for one parameter (primary_for_goal default) and implicitly fixes type to WEBPAGE, but it does not explain the other 8 parameters (category, counting_type, default_value, etc.) or their allowed values. Given the low coverage, the description should compensate more than it does.

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 clearly states the verb 'Prepare' and the specific resource 'WEBPAGE conversion action', and distinguishes it from the sibling 'confirm' tools by indicating it is the preparation step with validate-only behavior. This an agent can differentiate from the many other prepare/confirm pairs in the sibling list.

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?

The description says it 'Runs validate-only', which implies it is for validation rather than final creation, and the name 'prepare' plus sibling 'confirm' suggests a two-step workflow. However, it does not explicitly name the confirm tool or state when to use this vs. that, nor does it mention any prerequisites or exclusions. The guidance is clear in context but not fully explicit.

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