Prepare ReceiptCal chat message

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

Annotations already declare a write operation that is non-destructive and non-idempotent, so the safety profile is covered. The description adds useful context that 'some requests can create a meal plan,' but it omits the key behavioral fact that this only stages the action and likely requires later confirmation, and it says nothing about retry/duplication risk implied by idempotentHint=false.

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?

Two tight sentences, purpose front-loaded, with no wasted wording. The trailing sentence about meal plans is a little vague but does convey a real side effect.

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 chat-staging tool with no output schema and no annotation detail about the confirmation flow, the description is too thin. It leaves unanswered whether the message is actually sent, how the staging is completed (confirm_action?), and what the caller gets back.

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%, so the description must compensate for the single 'message' parameter. It does not: it never explains what content the message should carry, its format, or how it is interpreted, and the schema itself only conveys the string type and length bounds.

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 and resource: 'Stage sending and saving a message to the ReceiptCal planning assistant.' That is a clear statement of what the tool does. However, it does not distinguish it from nearby siblings such as prepare_save_voice_transcript or list_chat, so an agent still has to infer the boundary.

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?

There is no guidance on when to use this tool versus alternatives. Given the presence of confirm_action and cancel_action siblings, the staging/confirmation workflow is never explained, and no conditions for use or non-use are stated.

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