cloud_insts_imgs_upl

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

No annotations are provided, so the description must fully disclose behavioral traits. It fails to mention the return value, whether upload is synchronous or async, any failure modes, or authentication requirements. The note on project/region resolution is the only behavioral context, leaving significant gaps in understanding the tool's behavior.

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 lengthy (30+ lines) with a parameter list and usage note. It is structured with a clear intro, args section, and note, but some parameter descriptions are verbose and could be condensed. The front-loading is adequate but not optimal.

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 18 parameters, no output schema, and no annotations, the description covers parameter details and project/region resolution well. However, it omits critical context like the return value (e.g., image ID), completion behavior (sync/async), error handling, and permissions. Thus, it is not fully complete.

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%, but the tool's description provides detailed parameter explanations, including allowed values for enums (e.g., architecture, hw_firmware_type) and meanings (e.g., cow_format, tags). This adds substantial meaning beyond the bare schema. However, parameters like extra_headers, extra_query, extra_body remain vague.

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 'Upload an image from a URL,' which is a specific verb+resource. It distinguishes from sibling tools like cloud_insts_imgs_ls, cloud_insts_imgs_del, etc., which perform different actions on images. The title, though absent, is not needed for clarity.

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 includes a detailed note on how to resolve project_id and region_id from names or defaults, providing explicit guidance for using these required parameters. However, it does not specify when not to use this tool versus other image tools (e.g., cloud_insts_imgs_new_vol), but the purpose is clear enough.

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