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

Annotations already cover read-only, idempotent, non-destructive and open-world behavior, so the bar is lower. The description nonetheless adds real operational detail: the exact return shape (data_base64, sha256, delivered=true), the error path, the ownership constraint, and a checksum-verification instruction.

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?

Front-loaded with the action and scope, and every clause carries information (cost, precondition, return shape, verification). It is dense and semicolon-heavy, but there is no 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?

With annotations covering the safety profile and no output schema, the description fully compensates by stating the return fields, the delivered flag, the error behavior, and the checksum-verification step. Nothing needed to invoke it correctly 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?

Schema coverage is 100%, and both param descriptions already state the manifest provenance and 'verify SHA256' guidance, so the description largely restates structured content. Baseline 3 is appropriate; no additional syntax or format meaning is contributed.

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 and resource ('Download your owned completed processing result') plus the payload format (base64 with SHA256), which cleanly separates it from the status/manifest tool. It does not name a sibling tool explicitly, so an agent must infer the pairing with skavio_agent_job_status from the phrase 'completed owned manifest'.

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?

Gives a clear precondition: result_id must come from a completed, owned manifest, and notes 'no new payment,' which is useful routing context. It stops short of explicitly naming skavio_agent_job_status as the step that produces the manifest, leaving that inference to the agent.

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