confirm_assignment_submission

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

Beyond the annotations, the description adds concrete behavioral detail: the action must occur exactly once, group submissions affect the selected group, and retrying should be preceded by a history check. It also states the side effect of uploading files, which is important since readOnlyHint is 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?

Four focused sentences, each carrying useful information: the action, the precondition, the group side effect, and the retry heuristic. There is no filler and the core behavior is front-loaded.

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 two-parameter confirmation tool with no return schema, the description covers the important parts: what it does, when it is allowed, what side effects to expect, and how to handle uncertainty. It does not describe a successful response, but that is not critical for this action.

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 0%, so the description must compensate. It implicitly maps 'unexpired preview' to the confirmation token and 'student explicitly approves' to the confirmed flag, but it never names the parameters or explains where the token comes from. The parameter names are self-explanatory, but provenance is left to inference.

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 names a specific verb and resource: 'upload the unchanged files in an unexpired preview exactly once.' It clearly scopes the tool to confirming file-based assignment submission and distinguishes it from sibling tools like confirm_text_submission by emphasizing files and an unexpired preview.

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 gives an explicit precondition: 'Call only after the student explicitly approves that assignment, files, comments and any group effects.' It also provides a clear retry policy: inspect submission history if the outcome is uncertain. It does not name the sibling alternative tools explicitly, but the context alone is strong enough to avoid confusion.

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