group_sketches

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

No annotations are provided, so the description carries the full behavioral burden. It reveals only that the operation is an upsert; it does not say whether updating replaces or merges existing sketchIds, whether the workspace must already be open, or what side effects occur on member sketches.

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 tight sentence with the mutation intent front-loaded and no filler. It is efficient, though the brevity comes partly from omitting information an agent would need.

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?

This is a 3-required-parameter mutation with no annotations and no output schema, and the description never states what is returned (group object? id?) or whether groupId must be pre-existing. For a write tool with zero annotation coverage, the definition leaves too much for the agent to infer.

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 100%, so groupId, label, sketchIds and color are already documented in the schema. The description adds only the framing that a group is 'named' and lives 'in the workspace', which is marginal beyond the structured fields. 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?

The description states a specific verb pair and resource: 'Create or update a named group of sketches', scoped to 'the workspace'. An agent can tell this is group-membership management rather than sketch creation. However, it does not distinguish itself from near-siblings like design_create_group or add_sketch_to_workspace, so sibling differentiation is left to inference.

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?

'Create or update' implies upsert behavior but never says what condition triggers the update path (e.g., matching groupId) or when to prefer this over design_create_group / add_sketch_to_workspace. No when-not-to-use guidance is given despite a very crowded sibling set.

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