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

Annotations already indicate mutability (readOnlyHint=false). The description adds context like 'multi-channel fan-out' and 'per-platform transformations', but does not explain important behavioral traits such as the idempotency_key requirement or that workspace_id is required for creation. Since annotations are present, the bar is lower, but gaps remain.

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 a single sentence of 14 words, front-loaded with the HTTP method and core purpose. No extraneous words.

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?

Despite good annotations and schema, the description lacks context about the return value (no output schema), the requirement for workspace_id during creation, and when this tool is appropriate relative to similar tools. This is insufficient for a tool with nested parameters and no output schema.

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 75%, and the schema already includes clear descriptions for most parameters. The tool description adds no additional meaning beyond the schema, meeting the baseline for high coverage.

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 clearly states the tool creates a 'multi-channel fan-out preset with per-platform transformations', specifying the verb (create) and resource (destination preset). It distinguishes from siblings like list and preview.

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?

The description implies usage for creating presets but provides no explicit guidance on when to use this tool vs alternatives (e.g., preview_destination_preset). No prerequisites or when-not-to-use advice.

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