pixel_view_frames

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

Annotations already indicate read-only and idempotent behavior. The description adds value by stating nothing is written to disk, describing the visual layout (neutral gray backdrop, thin separators), and specifying return format (text summary plus image) and error handling. This goes beyond the annotations.

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 concise (3 sentences), front-loaded with the key action and purpose. Each sentence adds value without 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?

Given the tool's moderate complexity, complete schema descriptions, and annotations, the description covers purpose, behavior, output, and error format. It lacks example usage or limits on frame count beyond schema, but overall is comprehensive for a read-only 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?

The input schema already has good descriptions for all three parameters. The tool description adds minor context (same-size constraint, order, layout detail) but does not significantly extend schema semantics. With high schema coverage, baseline 3 is appropriate.

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 uses a specific verb ('Render') and resource ('canvases as one filmstrip image') and clearly states the purpose: reviewing animations or sprite sets. It is distinct from sibling tools like pixel_view_canvas (single canvas) and pixel_export_spritesheet (export format).

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 reviewing animation/sprite sets 'at a glance' but does not explicitly state when to use or avoid this tool, nor does it mention alternatives like pixel_view_canvas or pixel_onion_view.

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