upload_manual_entry_file_file

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

The description adds no behavioral context beyond the annotations. It does not disclose whether the file is attached to the header or line item, whether existing files are replaced, how uploads are processed, or any side effects. The annotations (readOnlyHint=false, destructiveHint=false) already indicate a non-read, non-destructive mutation, but the description contributes nothing further.

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, front-loaded sentence with no filler. However, it is slightly under-specified, so while concise, it could be improved by adding a few words to clarify the operation without becoming wordy.

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 tool with three parameters and no output schema, the description is too sparse to be contextually complete. It does not explain what the endpoint returns, how the manual_entry_id and entry_id relate to the 'manual entry line', or what the expected behavior is after adding the file. The schema covers parameters but the overall operational context is missing.

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 100% description coverage for its three parameters, so the heavy lifting is done there. The description does not add any parameter-level meaning beyond the schema, so a baseline of 3 is appropriate.

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 'Add file to manual entry line' uses a specific verb (Add) and resource (file) and identifies the target (manual entry line). It is clear but does not differentiate from the similarly named sibling tool 'upload_manual_compound_entry_file_file', which suggests a related but distinct 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?

There is no guidance on when to use this tool versus alternatives. It does not mention when to prefer this over upload_manual_compound_entry_file_file or create_file_file, nor does it provide context on prerequisites or expected usage scenarios.

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