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set_column_size

Idempotent

Change the width of a column in the table or inside a subform/linked_records. Use it when the user asks to make a column wider/narrower, to enlarge/shrink a column in the table view.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "app_id": "<app_id>",
      "entity_id": "<entity_id>",
      "field_id": "<field_id>",
      "size": "<size>"
    },
    "name": "set_column_size"
  }
}

Input Schema

NameRequiredDescriptionDefault
sizeYesNew width in pixels (for example 200)
app_idYesProject ID
field_idYesID of the column field whose width changes
entity_idYesID of the form whose table changes
subform_field_idNoIf the column changed is INSIDE a subform or linked_records, pass the ID of the subform field (linked_records/subform) here. Without this parameter the column of the main table changes.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changed
    • changedInput schema / properties / app_id / description
      Previous value: -"ID проєкту"New value: +"Project ID"
    • changedInput schema / properties / entity_id / description
      Previous value: -"ID форми, таблиця якої міняється"New value: +"ID of the form whose table changes"
    • changedInput schema / properties / field_id / description
      Previous value: -"ID поля-колонки, ширину якої міняємо"New value: +"ID of the column field whose width changes"
    • changedInput schema / properties / size / description
      Previous value: -"Нова ширина в пікселях (наприклад 200)"New value: +"New width in pixels (for example 200)"
    • changedInput schema / properties / subform_field_id / description
      Previous value: -"Якщо міняємо колонку ВСЕРЕДИНІ субформи або linked_records — передай сюди ID поля-субформи (linked_records/subform). Без цього параметра міняється колонка в основній таблиці."New value: +"If the column changed is INSIDE a subform or linked_records, pass the ID of the subform field (linked_records/subform) here. Without this parameter the column of the main table changes."
  2. Added

TDQS

A3.5/5.0
Behavior2/5

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

Annotations already declare readOnlyHint=false, idempotentHint=true, destructiveHint=false and openWorldHint=false, covering the safety profile. The description adds no behavior beyond that: nothing about persistence, whether other users' views are affected, or whether the change survives a refresh. The subform targeting it mentions is already spelled out in the schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, purpose first, trigger second, with zero filler. Sized appropriately for a narrow single-property setter.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

A simple, idempotent, non-destructive column setter with full schema coverage and declarative annotations needs little more than this. The only real gap is the absence of any persistence or view-scope note, which is minor here.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so all five parameters, including the subform_field_id targeting rule, are already documented in the schema. The description adds no units, ranges, or defaults beyond the schema's 'New width in pixels (for example 200)', so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource: change the width of a column, and scopes it to the table or a subform/linked_records table. That is enough to tell it apart from update_field or reorder_fields, though it never names those siblings explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives a concrete trigger ('Use it when the user asks to make a column wider/narrower, to enlarge/shrink a column in the table view'), which reliably maps user intent to this tool. It does not state exclusions or point to an alternative tool, so it stops short of a full routing decision.

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

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