> ## Documentation Index > Fetch the complete documentation index at: https://docs.monaco.com/llms.txt > Use this file to discover all available pages before exploring further. # Get Field Schemas for an Entity > Lists fields for `entity`, which must be one of `accounts`, `contacts`, `meetings`, `opportunities`, `sequences`, or `tasks`. Use each entry's `key` in `filters[].field` and `sort` on the corresponding list endpoint. The `allowed_operators` array lists the valid values for `filters[].condition` on that field. Each entry's `updatable` flag indicates whether the field can be written via the entity's update endpoint; fields with `updatable: false` are read-only (system-derived or create-only). Custom fields are always updatable, but values on AI auto-filled custom fields may later be overwritten by AI. Custom fields use `custom_field_{uuid}` keys. Enum and select fields expose their accepted values under `enum_field_settings.allowed_values`, and callers must pass the `key` rather than the display value. For `date` and `datetime` fields the `allowed_values` are semantic periods used with the `is` operator. The `equals`, `greater_than`, and `less_than` operators take raw `YYYY-MM-DD` values instead. ## OpenAPI ````yaml https://api.monaco.com/openapi.json get /v1/schemas/{entity} openapi: 3.1.0 info: title: Monaco Public API description: Public API for Monaco version: 1.0.0 servers: - url: https://api.monaco.com security: [] paths: /v1/schemas/{entity}: get: tags: - Schemas summary: Get Field Schemas for an Entity description: >- Lists fields for `entity`, which must be one of `accounts`, `contacts`, `meetings`, `opportunities`, `sequences`, or `tasks`. Use each entry's `key` in `filters[].field` and `sort` on the corresponding list endpoint. The `allowed_operators` array lists the valid values for `filters[].condition` on that field. Each entry's `updatable` flag indicates whether the field can be written via the entity's update endpoint; fields with `updatable: false` are read-only (system-derived or create-only). Custom fields are always updatable, but values on AI auto-filled custom fields may later be overwritten by AI. Custom fields use `custom_field_{uuid}` keys. Enum and select fields expose their accepted values under `enum_field_settings.allowed_values`, and callers must pass the `key` rather than the display value. For `date` and `datetime` fields the `allowed_values` are semantic periods used with the `is` operator. The `equals`, `greater_than`, and `less_than` operators take raw `YYYY-MM-DD` values instead. operationId: get_field_schemas_for_entity parameters: - name: entity in: path required: true schema: type: string title: Entity responses: '200': description: Successful Response content: application/json: schema: $ref: >- #/components/schemas/PublicItemResponse_list_FieldSchemaResponse__ example: data: - name: Name key: name type: string filterable: true sortable: true updatable: true allowed_operators: - contains - not_contains - is - is_not - is_empty - is_not_empty - name: Status key: status type: enum filterable: true sortable: true updatable: true allowed_operators: - is - is_not - is_empty - is_not_empty enum_field_settings: allowed_values: - key: NEW display_value: New - key: PROSPECTING display_value: Prospecting - key: ENGAGED display_value: Engaged - key: CUSTOMER display_value: Customer - name: Owner key: owner type: uuid filterable: true sortable: false updatable: true allowed_operators: - is - is_not - is_empty - is_not_empty enum_field_settings: allowed_values: - key: usr_abc123 display_value: Jane Smith - key: usr_def456 display_value: John Doe - name: Employee Count key: employee_count type: number parent: company filterable: true sortable: true updatable: false allowed_operators: - equals - greater_than - less_than - is_empty - is_not_empty - name: Last Funding Date key: last_funding_date type: date parent: company filterable: true sortable: true updatable: false allowed_operators: - is - equals - greater_than - less_than - is_empty - is_not_empty enum_field_settings: allowed_values: - key: previous_week display_value: Previous week - key: previous_month display_value: Previous month - key: previous_quarter display_value: Previous quarter - name: Customer Fit key: custom_field_550e8400-e29b-41d4-a716-446655440001 type: enum filterable: true sortable: true updatable: true allowed_operators: - is - is_not - is_empty - is_not_empty custom_field_settings: id: 550e8400-e29b-41d4-a716-446655440001 is_ai_auto_filled: false enum_field_settings: allowed_values: - key: high display_value: High - key: medium display_value: Medium meta: timestamp: '2026-04-21T12:00:00Z' 4XX: description: Client error content: application/json: schema: $ref: '#/components/schemas/PublicErrorResponse' components: schemas: PublicItemResponse_list_FieldSchemaResponse__: properties: data: items: $ref: '#/components/schemas/FieldSchemaResponse' type: array title: Data meta: $ref: '#/components/schemas/ResponseMeta' type: object required: - data title: PublicItemResponse[list[FieldSchemaResponse]] PublicErrorResponse: properties: error: $ref: '#/components/schemas/ErrorDetail' type: object required: - error title: PublicErrorResponse FieldSchemaResponse: properties: name: type: string title: Name description: Display name of the field examples: - Account Status key: type: string title: Key description: Internal key used for filtering and sorting examples: - status type: type: string enum: - string - number - time - boolean - enum - array - date - datetime - text - uuid - object title: Type description: Data type of the field examples: - enum parent: anyOf: - type: string - type: 'null' title: Parent description: >- The key of the parent object field this field belongs to. For example, 'employee_count' has parent 'company'. Top-level fields have no parent. examples: - company filterable: type: boolean title: Filterable description: Whether this field can be used in filter rules on list endpoints examples: - true sortable: type: boolean title: Sortable description: Whether this field can be used for sorting on list endpoints examples: - true updatable: type: boolean title: Updatable description: >- Whether this field can be written via the entity's update endpoint. Fields with `updatable: false` are read-only (system-derived or create-only). Custom fields are always updatable, but values on AI auto-filled custom fields may later be overwritten by AI. default: false examples: - true allowed_operators: items: type: string type: array title: Allowed Operators description: Operators that can be used to filter this field examples: - - is - is_not - is_empty - is_not_empty custom_field_settings: anyOf: - $ref: '#/components/schemas/CustomFieldSettings' - type: 'null' description: Settings for custom fields. Only present if this is a custom field. enum_field_settings: anyOf: - $ref: '#/components/schemas/EnumFieldSettings' - type: 'null' description: >- Settings for enum/select fields. Only present if this field has enum values. For date and datetime fields, these are semantic period values (e.g. 'previous_week') used with the 'is' operator. Other operators like 'equals' and 'greater_than' accept actual date values (YYYY-MM-DD) instead. type: object required: - name - key - type - filterable - sortable - allowed_operators title: FieldSchemaResponse ResponseMeta: properties: timestamp: type: string format: date-time title: Timestamp description: Server timestamp of the response type: object title: ResponseMeta ErrorDetail: properties: code: type: string title: Code description: Machine-readable error code examples: - not_found message: type: string title: Message description: Human-readable error message examples: - Resource not found type: object required: - code - message title: ErrorDetail CustomFieldSettings: properties: id: type: string title: Id description: Unique identifier of the custom field schema examples: - cf_abc123 is_ai_auto_filled: type: boolean title: Is Ai Auto Filled description: Whether this custom field is automatically populated by AI examples: - false type: object required: - id - is_ai_auto_filled title: CustomFieldSettings description: Settings present only for custom fields. EnumFieldSettings: properties: allowed_values: items: $ref: '#/components/schemas/EnumValueOption' type: array title: Allowed Values description: The list of valid values that can be used in filters examples: - - display_value: Active key: active type: object required: - allowed_values title: EnumFieldSettings description: Settings present only for enum/select fields. EnumValueOption: properties: key: type: string title: Key description: The value to use in filter rules examples: - usr_abc123 display_value: type: string title: Display Value description: Human-readable label for the value examples: - Jane Smith type: object required: - key - display_value title: EnumValueOption description: A single allowed value for an enum field. ````