openapi: 3.0.0
info:
  title: NocoDB Data Attachments Links API
  version: '2.0'
  description: RESTful API for querying and manipulating records across tables and views in any NocoDB base. Supports full CRUD operations on rows, filtering via where-clause operators, pagination, sorting, field selection, and bulk operations. Available in v2 and v3; v3 adds quoted-value support for special characters in query parameters.
  contact:
    name: NocoDB
    url: https://nocodb.com
  license:
    name: GNU Affero General Public License v3.0
    url: https://github.com/nocodb/nocodb/blob/develop/LICENSE
servers:
- url: https://app.nocodb.com
  description: NocoDB Cloud
security:
- xcToken: []
- bearerAuth: []
tags:
- name: Links
  description: Link relationship operations between records
paths:
  /api/v2/tables/{tableId}/links/{fieldId}/records/{recordId}:
    get:
      summary: List linked records
      operationId: table-row-links-list
      description: List all linked records for a specific link field on a record.
      tags:
      - Links
      parameters:
      - $ref: '#/components/parameters/tableId'
      - name: fieldId
        in: path
        required: true
        schema:
          type: string
        description: The link field identifier
      - $ref: '#/components/parameters/recordId'
      - $ref: '#/components/parameters/fields'
      - $ref: '#/components/parameters/sort'
      - $ref: '#/components/parameters/where'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/Paginated'
                - type: object
                  properties:
                    list:
                      type: array
                      items:
                        type: object
        '400':
          $ref: '#/components/responses/BadRequest'
      security:
      - xcToken: []
      - bearerAuth: []
    post:
      summary: Link records
      operationId: table-row-links-add
      description: Link one or more records to a specific link field on a record.
      tags:
      - Links
      parameters:
      - $ref: '#/components/parameters/tableId'
      - name: fieldId
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/recordId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              oneOf:
              - type: object
              - type: array
                items:
                  type: object
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
        '400':
          $ref: '#/components/responses/BadRequest'
      security:
      - xcToken: []
      - bearerAuth: []
    delete:
      summary: Unlink records
      operationId: table-row-links-remove
      description: Remove links between records for a specific link field.
      tags:
      - Links
      parameters:
      - $ref: '#/components/parameters/tableId'
      - name: fieldId
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/recordId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              oneOf:
              - type: object
              - type: array
                items:
                  type: object
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
        '400':
          $ref: '#/components/responses/BadRequest'
      security:
      - xcToken: []
      - bearerAuth: []
components:
  parameters:
    tableId:
      name: tableId
      in: path
      required: true
      schema:
        type: string
      description: Unique identifier of the NocoDB table
    offset:
      name: offset
      in: query
      schema:
        type: integer
        default: 0
      description: Number of rows to skip (for pagination)
    fields:
      name: fields
      in: query
      schema:
        type: string
      description: Comma-separated list of field names to include in the response
    where:
      name: where
      in: query
      schema:
        type: string
      description: 'Filter expression using NocoDB where-clause syntax. Example: (field,eq,value)~and(field2,gt,5)'
    recordId:
      name: recordId
      in: path
      required: true
      schema:
        type: string
      description: Primary key value of the record
    limit:
      name: limit
      in: query
      schema:
        type: integer
        default: 25
        maximum: 1000
      description: Maximum number of rows to return per page
    sort:
      name: sort
      in: query
      schema:
        type: string
      description: Sort specification. Prefix field name with '-' for descending order. Multiple sorts can be comma-separated.
  schemas:
    Paginated:
      title: Paginated
      type: object
      properties:
        pageSize:
          type: integer
        totalRows:
          type: integer
        isFirstPage:
          type: boolean
        isLastPage:
          type: boolean
        page:
          type: number
  responses:
    BadRequest:
      description: BadRequest
      content:
        application/json:
          schema:
            type: object
            properties:
              msg:
                type: string
                example: 'BadRequest [Error]: <ERROR MESSAGE>'
            required:
            - msg
  securitySchemes:
    xcToken:
      type: apiKey
      in: header
      name: xc-token
      description: NocoDB API token
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Bearer token authentication. Use ''Authorization: Bearer <token>'' header format.'
externalDocs:
  description: NocoDB Developer Resources
  url: https://nocodb.com/docs/product-docs/developer-resources/rest-apis