update_bill_booking

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

Annotations already indicate the tool is a write operation (readOnlyHint=false), idempotent, and non-destructive, but the description adds no additional behavioral context. It does not explain what happens when status changes (e.g., locking effects of BOOKED) or any business rules, leaving the agent with incomplete information about side effects.

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 a single short sentence, which is concise, but it merely restates the tool's purpose without adding meaningful information. It is not overlong, but the sentence does little to earn its place beyond the tool name.

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 simple two-parameter tool with a clear schema and annotations, the description is minimally sufficient. However, it lacks guidance on when to use this tool and any context about the bill booking workflow, leaving gaps for an agent to infer correct usage.

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%: both 'id' and 'status' have descriptions, and the enum for status is provided. The description adds no param information beyond the schema, so it stays at the baseline of 3 for fully documented parameters.

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 action ('Update') and the resource ('Bill status'), making it evident what the tool does. However, it does not distinguish itself from the sibling tool 'update_bill', which might also update bill fields, so it is specific but lacks sibling differentiation.

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 provides no explicit guidance on when to use this tool versus alternatives like 'update_bill' or 'create_bill_action'. The schema implies usage (to change a bill's status to DRAFT or BOOKED), but no clear context or exclusions are given.

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