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

Annotations already declare readOnlyHint=false, destructiveHint=true, and idempotentHint=true, so "[write, destructive]" just repeats structured data and earns no credit. The description doesn't add whether deletion is permanent/recoverable or whether confirmation is expected — meaningful gaps for a destructive operation, though the annotation bar is already met.

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?

Two compact sentences, front-loaded with the destructive marker and the action, then the parameter guidance. No filler; every clause carries information the schema does not.

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 3-parameter, single-file delete with no output schema and rich destructive annotations, the description covers the required parameter, the path source, and the account identifier options — enough to invoke correctly. Only irreversibility and sibling disambiguation are 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?

Schema coverage is 0%, so the description must compensate, and it does: it explains that the account may be identified by either storages_account_id or storages_account_uuid, and defines file_path as the full in-zone path sourced from list_storage_files `path`. Only the mutual exclusivity/priority of the two account identifiers is left unstated.

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?

Specific verb + resource + scope: "Delete one file from a storage account" tells the agent this is single-file deletion, implicitly distinct from the sibling delete_storage_folder. It stops short of naming that sibling explicitly, so the differentiation is inferential rather than stated.

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 note that file_path comes from list_storage_files `path` implies the list-then-delete workflow, which is genuinely useful. However, there is no explicit when-to-use guidance and no mention of delete_storage_folder as the alternative for directory removal.

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