submit_assignment

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

With no annotations, the description must carry behavioral disclosure. It does reveal that drive_file_ids and link_urls are attached and that the submission is updated with state and timestamp, but it does not address whether the submission is final/irreversible, whether existing attachments are replaced, or any permission requirements. This leaves a meaningful transparency gap for a mutating action.

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 tight docstring: one purpose sentence, a flat list of five parameters, and a one-line Returns. There is no filler, no repetition of schema types, and each sentence earns its place.

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 5-parameter mutation tool with no annotations, the description covers all inputs and even describes the return shape, which is functional. However, it omits when-to-use guidance and behavioral caveats; with an output schema present, the Returns line is not essential, so the missing usage and side-effect context keeps this from being fully complete.

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 Args block must compensate, and it does. Every parameter gets a meaningful one-liner, including clarifying that submission_id is 'your student submission' and specifying the comma-separated formats and attachment intent for drive_file_ids and link_urls.

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 opens with 'Submit work to an assignment,' a specific verb-resource combination that clearly identifies the operation. It is also easily distinguished from sibling tools like list_submissions, upload_file, and update_doc, none of which finalize an assignment submission.

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 guidance on when to use this tool relative to alternatives, nor does it state preconditions or exclusions. An agent must infer from the name alone that this is the final submission step rather than a draft update or file upload.

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