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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, and openWorldHint=false, framing this as a non-destructive, closed-world write. The description adds that the source must be a direct URL and that the result lands in a private library, but says nothing about auth requirements, download failures, size limits, or whether re-importing duplicates content.

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?

A single sentence that front-loads the action, the accepted media types, and the destination. Zero filler and 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?

An output schema exists, so return values need not be described, and the annotations carry the safety profile. The only real gap is the absence of usage guidance against sibling upload/import tools, which is minor for a simple one-required-param operation.

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%, so all five parameters (url, name, projectId, workspaceId, contentHashSha256) are already documented in the schema. The description only reinforces that the URL is a direct link, adding no syntax or fallback detail beyond what the schema provides; baseline 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?

States a specific verb (Import), the media types accepted, the source constraint (user-provided direct URL), and the destination (private BlitzReels media library). This is clear enough to distinguish from sibling upload tools that take local files, though it never names an alternative explicitly.

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?

No when-to-use or when-not-to-use guidance, and no routing to alternatives such as media_upload_file, media_upload_start, or media_import_inspect. The agent must infer from the name alone that this is the URL-based path.

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