Gp Alter Field

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

The annotations already declare readOnlyHint=false, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is largely covered. The description adds that write/path restrictions depend on service capabilities and that results are structured/verifiable, which is useful but generic and does not explain what field properties are altered or what side effects may occur.

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 short and front-loaded, with the core purpose stated first. However, the second sentence about structured results and service restrictions is generic boilerplate that does not earn much space for a mutation tool requiring parameter clarity.

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?

With 4 undocumented parameters, no usage guidance, and only a mutation safety profile from annotations, the description is incomplete for correct invocation. The existence of an output schema offsets return-value explanation, but the input semantics and when-to-use guidance are missing.

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?

There are 4 parameters with 0% schema description coverage, and the description mentions none of them. It does not explain in_table, field_name, new_field_name, or new_field_alias, leaving the agent with no semantic guidance beyond 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 states a specific verb and resource: modify field (修改字段). However, it does not clarify whether this renames a field, changes an alias, or alters other properties, and it does not distinguish the tool from siblings such as arcgis_pro_gp_add_field, arcgis_pro_gp_delete_field, or arcgis_pro_layer_add_field_alias.

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 gives no guidance on when to use this tool versus alternatives. It mentions write and path restrictions depending on service capabilities, but that is a constraint caveat, not usage guidance or exclusion criteria.

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