uploadAttachmentFromLocalFile

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

With no annotations, the description must carry the full burden. It discloses the core action (upload) and the output (upload token), but omits details such as required permissions, error behavior, or whether the file is modified locally. This is adequate but not rich.

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, tightly worded sentence that front-loads the action and includes no filler. Every word contributes to conveying the tool's function.

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 simple upload tool with one structured parameter and no output schema, the description provides the essential flow (local file → upload → token). However, it lacks context about the token's subsequent use or the optional filename behavior, which are relevant for full understanding. It is adequate but leaves room for improvement.

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% per the context signals, and the description provides no parameter-level information. It does not explain filePath or filename, leaving the schema's own property descriptions (if any) as the only source. The description adds no meaning beyond the tool's name for parameters.

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 uses a specific verb ('upload'), names the resource ('attachment file'), and specifies both the source ('local file system') and destination ('Redmine'), plus the outcome ('get upload token'). This clearly distinguishes it from sibling tools like uploadAttachmentFromBase64Content (different source) and downloadAttachmentToLocalFile (opposite direction).

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 phrase 'from local file system' clearly establishes the intended context for using this tool rather than base64-based upload variants. However, it does not explicitly mention alternatives or exclusions, though the context itself is unambiguous enough for basic decision-making.

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