presign_add_upload

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

No annotations are present, so the description carries the full burden of behavioral disclosure. It states the outcome—presigned URLs for direct upload—but does not mention side effects, expiration behavior, required cloud credentials or permissions, or whether any storage resources are created. This leaves significant behavioral uncertainty for a tool that likely interacts with external storage.

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 or redundant content; it is concise and front-loaded with the verb. The phrase 'direct upload with presigned URLs' is slightly awkward, but as a compact definition it is efficient.

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?

With no output schema, limited parameter documentation, no annotations, and no sibling routing, an agent lacks enough context to invoke the tool confidently. The description does not clarify return format, authentication expectations, URL expiry, or how this fits into a presigned-upload workflow. For a tool with only two parameters, this is under-specified.

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 50%, with only 'directory' documented as 'Project directory'; 'api_key' has no schema description and is not explained in the tool description. The description adds no parameter-level meaning, such as how 'directory' maps to an upload path or why 'api_key' is needed. At 50% coverage, the description should compensate for the undocumented parameter, but it does not.

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 concrete action ('Generate') and a resource ('direct upload with presigned URLs'), so it is not a tautology and gives a basic sense of the tool's role. It is somewhat distinguishable from siblings like presign_generate_system and presign_add_expiry by focusing on the upload action, though the phrasing is terse and does not explicitly highlight those distinctions.

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 instead of related siblings such as presign_generate_system or presign_add_expiry. No alternatives, exclusions, prerequisites, or context cues are provided beyond the generic verb 'Generate.' An agent must infer usage from the tool name and a one-line description.

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