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

Annotations already declare the safe read/idempotent profile, so the bar is lower. The description usefully adds that the link contains a secret in its fragment and must not be shared publicly, which is genuine behavioral context not present in annotations. It doesn't mention expiration or link lifetime, 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?

Two tight sentences, front-loaded with the action and followed by the critical security constraint. Every sentence earns its place with no redundancy.

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 low-complexity 2-parameter tool with annotations covering safety and no output schema, the description covers purpose, scope, and the key security caveat. It does not explain the returned link's form or lifetime, which is a minor gap but not disqualifying.

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 50%: workspaceToken is well-documented in the schema, but fileId has no description in either schema or description. The description doesn't compensate for the undocumented fileId or explain accepted file/artifact identifiers, so the baseline 3 holds.

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 (Create) and resource (a private browser download link) and scopes it to uploaded files or generated artifacts in this workspace. An agent can immediately tell what the tool produces. It doesn't differentiate from siblings like fetch or get_rendered_table, but the resource is unambiguous.

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 implied by the phrase 'for an uploaded file or generated artifact in this workspace,' which scopes when the tool applies. However, no explicit when-to-use vs alternatives is given, and no sibling is named as the alternative for other cases.

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