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add_column

Append a single column to a workspace's table schema. Position is auto-computed as next-after-max so the contiguity invariant holds. Key collision (409) if a column with the same key already exists. Editor role required. Use this for per-column additions; use get_workspace_schema + update_surface with columns for full schema replacement or reordering. Multi-surface workspaces accept surface_slug to target a specific table sheet (use list_surfaces to enumerate); omit to fall through to the workspace's primary table surface.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keyYesField name in row.data. Lowercase + underscores recommended; 1-64 chars.
slugYesThe workspace slug. Accepts either the bare slug ('my-workspace') or the org-prefixed form ('my-org/my-workspace') as shown in the dashboard URL; both resolve to the same workspace.
typeYesColumn type. See get_workspace_schema for examples.
labelYesHuman-readable header shown in the sheet.
widthNoOptional. Initial column width in px.
optionsNoRequired for `status` + `select` types. The allowed values shown in the dropdown.
descriptionNoOptional. Human-readable tooltip shown in the column header.
surface_slugNoOptional. The slug of the specific table surface to add the column to. Omit on single-table workspaces; required on multi-table workspaces if you don't want the primary table surface (lowest position).

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / surface_slug
      Added value: +{
+  "description": "Optional. The slug of the specific table surface to add the column to. Omit on single-table workspaces; required on multi-table workspaces if you don't want the primary table surface (lowest position).",
+  "type": "string"
+}
  2. Changed1 schema field changed
    • changedInput schema / properties / slug / description
      Previous value: -"The workspace slug. Accepts either the bare slug ('my-workspace') or the org-prefixed form ('my-org/my-workspace') as shown in the dashboard URL — both resolve to the same workspace."New value: +"The workspace slug. Accepts either the bare slug ('my-workspace') or the org-prefixed form ('my-org/my-workspace') as shown in the dashboard URL; both resolve to the same workspace."
  3. First observed

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