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

The description goes well beyond the annotations by explaining that runs which already processed the file retain their outputs, while the file's bytes and parsed contents are destroyed, and that the operation cannot be undone. This discloses important irreversible consequences that annotations alone do not convey.

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 compact, direct, and front-loaded with the core purpose. Every sentence adds value: the action, the preservation of run outputs, the irreversibility, and the operational instruction about llmContext guidance. No fluff 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 destructive single-resource operation with three fully documented required parameters and an output schema available, the description covers what an agent needs to know: scope, side effects, irreversibility, and a non-obvious follow-up instruction about llmContext. Nothing essential is 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?

The input schema already provides 100% coverage with detailed descriptions for all three parameters (fileId, environment, workspaceId). The description adds no additional parameter-level meaning, so the baseline score of 3 applies.

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 states a specific verb and resource: 'Permanently delete an uploaded file from Extend (files group).' This clearly distinguishes it from sibling tools that delete runs, webhooks, or subscriptions, and leaves no ambiguity about what action is performed.

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 makes the tool's purpose clear and implies it should be used when permanently removing an uploaded file is intended. It does not explicitly contrast with alternatives like get_file or list_files, but the file-specific deletion scope is enough to route an agent to the correct tool among the many delete_* siblings.

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