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First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com

Answer 5 · Act 12 · Transact 2 · Score: Not yet scored

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upsert_field

act imperative

Add or update one field on a type without removing the others. type is the type key; field_type is the field kind: text, number, date, boolean, enum, reference. Enum fields need values and can use presentation: "badge" with explicit value_semantics of neutral, info, success, warning, or danger; use neutral when meaning is unclear. Reference fields need target. A number field can use presentation: "rating", variant: "segments", and max from 2 to 10. Example: upsert_field({ type: "submission", key: "stage", field_type: "enum", values: ["submitted", "winner", "rejected"], presentation: "badge", value_semantics: { submitted: "neutral", winner: "success", rejected: "danger" } }).

Input schema

Property	Type	Required	Description
`type`	string	no	Type key (not the field kind)
`type_key`	string	no	Alias for type
`key`	string	yes	—
`label`	string	no	—
`field_type`	string	no	Field kind
`required`	boolean	no	—
`values`	array	no	—
`target`	string	no	Referenced type key (reference fields)
`presentation`	string	no	—
`variant`	string	no	—
`max`	number	no	—
`value_semantics`	object	no	—

Raw JSON schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "description": "Type key (not the field kind)"
    },
    "type_key": {
      "type": "string",
      "description": "Alias for type"
    },
    "key": {
      "type": "string",
      "minLength": 1,
      "pattern": "\\S"
    },
    "label": {
      "type": "string"
    },
    "field_type": {
      "type": "string",
      "enum": [
        "text",
        "number",
        "date",
        "boolean",
        "enum",
        "reference"
      ],
      "description": "Field kind"
    },
    "required": {
      "type": "boolean"
    },
    "values": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "target": {
      "type": "string",
      "description": "Referenced type key (reference fields)"
    },
    "presentation": {
      "type": "string",
      "enum": [
        "rating",
        "badge"
      ]
    },
    "variant": {
      "type": "string",
      "enum": [
        "segments"
      ]
    },
    "max": {
      "type": "number",
      "minimum": 2,
      "maximum": 10
    },
    "value_semantics": {
      "type": "object",
      "additionalProperties": {
        "type": "string",
        "enum": [
          "neutral",
          "info",
          "success",
          "warning",
          "danger"
        ]
      }
    }
  },
  "required": [
    "key"
  ],
  "additionalProperties": false
}

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