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

Annotations already declare destructiveHint=true and idempotentHint=false, so the bar is lower, yet the description still adds real value: irreversibility ('Cannot be undone') and an authorization prerequisite for team files. It does not cover side effects on references or shared links, keeping it below a 5.

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?

Three short sentences, zero filler, with the destructive consequence front-loaded ahead of the conditional permission note. Every sentence carries information an agent needs.

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 single-parameter destructive tool with full annotation coverage and no output schema, the description supplies the two facts that matter most: irreversibility and role requirements. Minor gaps remain — no mention of what happens to dependent resources or whether deletion is soft/hard.

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% for the single file_id parameter, so the baseline of 3 applies. The description adds no format, source, or lookup guidance for obtaining a valid file_id, so it contributes nothing 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 verb+resource pair ('Delete a file') is specific and unambiguous, and the scope note about team files clarifies the operation's breadth. However, it never names or contrasts with siblings such as file_write or file_read, so an agent gets no explicit routing help beyond the obvious verb difference.

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?

Usage is only implied by the verb, plus one precondition ('For team files: requires owner/admin role'). There is no statement of when to prefer this over file_write/update paths, nor any warning about when deletion should be avoided — guidance is adequate but thin.

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