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

With no annotations, the description carries the full burden. It clearly discloses that the action is destructive and identifies what is destroyed ('uploaded app file' on 'the server'). However, it does not state whether deletion is permanent, whether there are side effects, or what a successful/unsuccessful call returns.

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 short sentences, both useful: the first states the operation and target, the second tells the agent how to obtain the required parameter. No filler or repetition.

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 one-parameter, no-output-schema delete operation, the description plus schema provide enough for an agent to call it correctly. It could mention irreversibility or success/error behavior, but the low complexity keeps the gap minor.

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%: the schema already says 'File ID from app_list'. The description's 'Use app_list to get the file ID' reinforces that source but adds no new semantic information beyond the schema.

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 ('Delete') with a clear resource ('uploaded app file') and location ('from the server'), and it points to app_list for IDs. This distinguishes it from sibling operations like app_upload, app_install, or device_uninstall_app.

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?

It provides one guideline: use app_list to obtain the file ID before calling. It does not explicitly state when to choose this over other app-related tools nor mention exclusions (e.g., this is not for uninstalling an installed app from a device). The context is implied rather than fully specified.

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