> ## Documentation Index
> Fetch the complete documentation index at: https://docs.groundtech.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Create address book entry

> Adds a withdrawal destination to the organization's address book. Requires an organization owner or admin.

Add a withdrawal destination to the authenticated organization's address book.


## OpenAPI

````yaml swagger/swagger-combined.yaml POST /v2/address-book/entries
openapi: 3.0.0
info:
  title: Ground API
  description: Core API for portfolio wallets, deposits, withdrawals, and webhooks.
  version: 2.0.0
servers:
  - url: https://sandbox.groundtech.co
  - url: https://production.groundtech.co
security:
  - bearerAuth: []
tags:
  - name: System
    description: System health and utility endpoints.
  - name: Sandbox Faucets
    description: Sandbox-only test token faucets.
  - name: Portfolio Wallets
    description: >-
      Portfolio wallets with strategy allocation, deposits, withdrawals, and
      yield positions.
  - name: Webhook Endpoints
    description: Webhook endpoint management for portfolio wallet notifications.
paths:
  /v2/address-book/entries:
    post:
      tags:
        - Address Book
      summary: Create address book entry
      description: >-
        Adds a withdrawal destination to the organization's address book.
        Requires an organization owner or admin.
      operationId: createAddressBookEntry
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - address
                - chain
                - label
              additionalProperties: false
              properties:
                address:
                  type: string
                  description: Destination address to whitelist.
                chain: ce96a64b-ab71-483a-9461-1efd776701db
                label:
                  type: string
                  minLength: 1
                  maxLength: 120
                  description: Human-readable label for this destination.
            example:
              address: '0x52908400098527886E0F7030069857D2E4169EE7'
              chain: arbitrum
              label: Ops treasury
      responses:
        '201':
          description: Address book entry created
          content:
            application/json:
              schema:
                type: object
                properties:
                  entry: 7b346a60-c5ad-4c94-9bac-8a871a53a15e
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          description: Acting profile is not an organization owner or admin
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: Duplicate address book entry
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error: >-
                  An address book entry for this address and chain already
                  exists
                code: address_book_duplicate_entry
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  schemas:
    ErrorResponse:
      type: object
      required:
        - error
        - code
      properties:
        error:
          type: string
          description: >-
            Human-readable error message. May change without notice; do not
            parse programmatically.
        code:
          type: string
          description: >-
            Machine-readable error code. Stable across API versions — safe to
            switch on in client code.
          enum:
            - validation_error
            - unknown_parameters
            - unsupported_chain
            - unsupported_token
            - invalid_destination_address
            - precision_overflow
            - invalid_cursor
            - unauthenticated
            - forbidden
            - wallet_not_found
            - wallet_limit_reached
            - withdrawal_not_found
            - deposit_not_found
            - yield_source_not_found
            - wallet_projection_unavailable
            - insufficient_funds
            - duplicate_request_id
            - request_id_conflict
            - invalid_position_weight
            - invalid_withdrawal_plan
            - payout_not_found
            - webhook_not_found
            - webhook_duplicate_url
            - withdrawal_not_cancellable
            - withdrawal_already_cancelled
            - withdrawal_payout_in_progress
            - withdrawal_policy_required
            - workflow_conflict
            - payout_already_terminal
            - payout_in_progress
            - payout_not_retryable
            - address_book_entry_not_found
            - address_book_duplicate_entry
            - address_book_whitelist_violation
            - rate_limited
            - rate_limit_exceeded
            - internal_error
            - wallet_creation_failed
            - service_temporarily_unavailable
    AuthErrorResponse:
      type: object
      required:
        - error
      properties:
        error:
          type: string
          description: Authentication or authorization error message.
        message:
          type: string
          nullable: true
          description: Additional auth middleware detail, when present.
        code:
          type: string
          nullable: true
          enum:
            - unauthenticated
            - forbidden
          description: >-
            Some auth and scope failures include a stable code; middleware
            errors may omit it.
  responses:
    Unauthorized:
      description: >-
        The request is missing a valid bearer token, or the token is invalid or
        expired.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/AuthErrorResponse'
          example:
            error: Unauthenticated request
            message: Missing or invalid bearer token
    TooManyRequests:
      description: >-
        Rate limit exceeded. Limits are enforced by API key/customer identity
        and by endpoint class. Retry with backoff; rate-limit headers are not
        currently emitted.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Rate limit exceeded
            code: rate_limited
    InternalServerError:
      description: >-
        An unexpected error occurred while processing the request. The request
        can be safely retried with the same `requestId`.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Internal server error
            code: internal_error
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````