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

Beyond the annotations, it discloses that no payment occurs here, the server holds no keys, the job only proceeds if the person opens and signs the link, and which validity checks run first (agent active and responsive, tier exists, brief fits). It also discloses the price-return behavior and the exact handoff expectation, which the annotations (readOnly=false, openWorld=true, idempotent=false) alone would not convey.

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?

Three sentences, each doing distinct work: what it produces, what safety and side-effect posture it has, and what the agent must do with the result. The most important constraint (nothing is paid here, you hold no keys) is front-loaded in the first sentence.

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 four parameters, no output schema, and mutation-adjacent behavior, the description covers the essentials: the return is a link plus a price, and the caller is told what to display and how to deliver the link. It could be slightly more explicit about the shape of the returned link object or what happens if the checks fail, but nothing critical is missing for correct invocation.

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 100%, so tier defaults, the 6/24/72/168 enum, the 0x address source and the brief all come from the schema itself. The description only reinforces the price/deadline context ('the person can change it on the page') rather than explaining arguments the schema leaves unclear, so the baseline 3 applies.

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 (prepare) plus the two concrete outputs (a job prepared for a Panal agent or person, and a link), and immediately clarifies that this is a draft, not a paid hire. That framing clearly separates it from sibling tools like panal_get_agent or panal_search_agents, which only resolve agents.

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 gives a clear condition for use (the person will review and pay with their own wallet) and explicit follow-up steps: show the price and recipient, then hand over the link exactly as returned. It also says the checks mirror a real hire and the price is reported. It stops short of naming a contrasting alternative tool, so it is clear context rather than full when/when-not routing.

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