create_grid_style

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

Annotations indicate the tool is not read-only and not destructive, consistent with a create operation. The description adds the return format { ok, styleId, name }, but lacks details on error conditions, duplicate name handling, or other side effects.

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?

Three concise sentences front-load the purpose and provide essential details without fluff. Every sentence adds value.

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?

The description covers the core functionality and return value, but misses details about the grids array structure and optional parameters. Given the tool's moderate complexity, it is adequate but not fully comprehensive.

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?

With only 33% schema coverage, the description adds value by explaining how pattern relates to sectionSize, count, gutterSize, and alignment. However, it does not fully describe the grids array structure (e.g., required 'visible', optional 'offset') or the 'description' parameter.

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 reusable local layout-grid style for aligning content, and explains the grid patterns (GRID, ROWS, COLUMNS) with their parameters. It differentiates from sibling style creation tools by focusing on grid styles.

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 mentions applying the style to frames with apply_style_to_node, providing a usage hint. However, it does not specify when to use this tool versus alternatives like set_layout_grids, or mention prerequisites or exclusions.

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