Upload and Attach File

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

Annotations already indicate a non-read-only operation. The description adds the 400 MiB size limit, which is useful, but does not disclose other behavioral traits like whether the attachment replaces an existing one, the confirmation flow via the 'confirm' parameter, or any 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 sentence with no filler. It front-loads the verb and resource, making it efficient and easy to scan.

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 has 4 parameters, no output schema, and relatively sparse annotations, the description is too minimal. It does not cover what happens after upload (e.g., return value), the purpose of the confirm parameter, or any potential destructive aspects, leaving the agent under-informed for invocation.

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 should compensate for the unnamed parameters. It vaguely aligns file_path with 'local file' and entry_id with 'entry', but does not explain bundle_id or the confirm parameter. The parameter names are somewhat self-explanatory, but the description adds little beyond the schema.

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 specific action: uploading a local file to account storage and attaching it to an entry. It distinguishes itself from sibling attachment tools (e.g., list/remove/delete) by focusing on the upload+attach operation.

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 implies the usage context (uploading local files and attaching to entries) but does not explicitly state when to avoid using it or mention alternatives. Since there are no direct overlapping tools, the clarity is sufficient.

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