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

With no annotations provided, the description carries full behavioral burden. It thoroughly discloses the security properties (32 random bytes, ~256 bits entropy), public access implications, ability to revoke, required role, and the gating condition (FILES_SURFACE_ENABLED + per-user allowlist). These go well beyond a minimal description.

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, front-loaded, and every sentence adds meaningful information: security, revocation, permissions, feature gate, and usage context. No redundancy or filler.

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 tool's simplicity (2 parameters, no output schema), the description is remarkably complete. It covers the return value format, security implications, revocation path, required role, and feature gating. There are no annotations, so this description fully compensates and provides all necessary context for safe invocation.

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 100% for both parameters (slug and file_id), so the baseline is 3. The description does not add parameter-specific details beyond what the schema already explains, but this is acceptable since the schema descriptions are comprehensive and the purpose of each parameter is clear from the context.

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 opens with 'Mint a public share token for a file', a specific verb+resource statement that clearly identifies the tool's purpose. It further distinguishes from siblings like revoke_file_share and share_workspace by describing the exact output (a public URL) and the security model.

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?

Provides an explicit use case: 'Use when a workflow needs to hand the file off to an external system that can't authenticate.' It also names the complementary revocation tool ('Revoke later with revoke_file_share') and specifies the editor role requirement, giving clear context for when this tool should be chosen.

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