Refresh Shop Cart

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only says 'refresh cart and checkout state' without stating whether it mutates server state, requires an active session, has side effects, or differs from a plain view. This is insufficient for an agent to anticipate the tool's behavior.

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 one short sentence with no filler; the key action and scope are front-loaded. 'Called from UI' adds useful context without bloating the text.

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 one-parameter tool with no annotations and a dense sibling set, the description omits when to use it, what refreshing entails, and how it relates to cart/checkout siblings. Although an output schema exists, the missing usage and behavior guidance make the definition incomplete.

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% and session_id has no schema-level description. The phrase 'for a session' loosely ties the parameter to a session concept, but the description does not explain the expected format, source, or semantics of session_id, leaving the agent to guess.

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 uses a specific verb ('refresh') and names the resource ('cart and checkout state') scoped to a session, making the core action clear. It does not explicitly contrast with sibling tools like shop_cart_view or checkout-session mutations, but the action and scope are unambiguous enough to identify the tool.

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 only contextual cue is 'called from UI,' which hints at invocation context but gives no when-to-use guidance, prerequisites, or exclusions versus the many refresh_* and checkout siblings. An agent cannot determine when to choose this over shop_cart_view or update_checkout_session.

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