Create Group Layer

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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=false. The description's 'write and path restrictions are subject to service capabilities' is generic boilerplate that adds little concrete behavioral context (no mention of what gets modified in the .aprx, permissions, or 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?

It is short and front-loaded with no wasted length, but the two clauses are generic filler rather than earning their place with useful specifics.

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?

An output schema exists so return values need not be explained, but for a mutation tool with 0% parameter coverage and no usage guidance, the description omits essential information (which container/map is targeted, path requirements, effect on the project).

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 0% for three required parameters (aprx_path, map_name, group_layer_name), and the description provides no meaning, format, or path-convention guidance for any of them. The description fails to compensate for the total documentation gap.

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 says '创建图层' (create layer), a vague generic restatement that does not match the specific resource in the tool name/title ('Group Layer'). With many sibling creation tools (create_map, add_layer_from_path, add_layer_to_group), an agent cannot tell what unique thing this tool creates.

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?

No when-to-use guidance, no exclusions, and no reference to alternatives such as arcgis_pro_add_layer_to_group or arcgis_pro_create_map. Usage is left entirely to inference from the name.

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