putObjectSourceUrl

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool downloads and uploads a file, implying a write operation, but lacks details on permissions, error handling, rate limits, or what happens if the URL is invalid. This is a significant gap for a mutation tool with zero annotation coverage.

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, efficient sentence that front-loads the core functionality. There is no wasted text, and it directly conveys the tool's purpose without redundancy or unnecessary details.

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's complexity (a mutation operation with 3 parameters), lack of annotations, and no output schema, the description is incomplete. It does not explain return values, error conditions, or behavioral traits like whether the upload overwrites existing files, making it inadequate for safe and effective use by an AI agent.

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 100%, so the schema already documents all three parameters (sourceUrl, fileName, targetDir) with descriptions. The description does not add any meaning beyond the schema, such as URL format examples or directory path conventions, but the baseline is 3 when the schema does the heavy lifting.

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 tool's purpose: download a file from a URL and upload it to a storage bucket. It uses specific verbs ('download', 'upload') and identifies the resource ('file', 'storage bucket'). However, it does not explicitly differentiate from sibling tools like putObject, putBase64, or putBuffer, which may handle similar uploads with different input types.

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 versus alternatives. It does not mention sibling tools like putObject (which might handle direct uploads) or putBase64/putBuffer (for other data formats), nor does it specify prerequisites or exclusions, such as URL accessibility or file size limits.

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