m365_reply_email

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

No annotations are provided, so the description bears full responsibility for behavioral transparency. The description fails to disclose critical behavioral details, such as whether the reply creates a draft or sends immediately, permission requirements, or side effects (e.g., adding to sent items).

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, well-structured sentence that front-loads the key purpose and context. Every word contributes to understanding, with no unnecessary verbiage.

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?

Given the tool's simplicity (0 parameters, no output schema), the description partially covers the core action. However, it omits important behavioral details (e.g., reply behavior, attachment handling, draft vs. send) that would reduce ambiguity.

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?

The input schema has zero properties, and schema coverage is 100% (vacuously). The description references a 'message ID' implicitly, adding context, but does not formally document parameters. With 0 parameters, the baseline is 4, and no further parameter info is needed.

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 tool's action ('reply to a Microsoft 365 email') and identifies the necessary resource ('message ID from m365_list_emails'). It distinguishes itself from related tools like send_email and create_draft.

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 clear context for when to use the tool (when the user wants to reply to an email retrieved via m365_list_emails), but it does not explicitly state when not to use it or suggest alternatives among siblings.

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