Layer Add Field Alias

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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=false, so the safety profile is covered. The description's only addition — 'write and path restrictions are subject to service capabilities' — is generic boilerplate that does not tell the agent what actually gets modified or what permissions are required for an alias change.

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, but brevity here reflects under-specification rather than economy — the second sentence is filler boilerplate that adds no actionable information.

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. However, for a five-parameter mutation tool with zero schema coverage, the description omits the target path/layer/field context entirely and misstates the operation, leaving it inadequate for correct invocation.

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?

Five required parameters with 0% schema description coverage, and the description mentions none of them. It gives no hint that aprx_path, map_name, layer_name identify the target or that field_name/field_alias define the alias mapping, leaving the agent to infer everything from bare parameter titles.

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 '添加字段' (add field), but the tool's actual purpose is adding a field ALIAS, so it misdescribes the resource. It also fails to distinguish itself from siblings like arcgis_pro_gp_add_field and arcgis_pro_gp_alter_field, which is exactly the confusion this description 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 prerequisites, and no mention of alternatives such as arcgis_pro_gp_add_field or arcgis_pro_gp_alter_field. An agent has no basis for choosing this tool over its near-identical sibling names.

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