> ## 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. # Preview wallet allocation > Validates explicit dollar movements and returns each affected position's value before and after. This endpoint is read-only. ## OpenAPI ````yaml swagger/swagger-combined.yaml POST /v2/wallets/{id}/allocate-preview 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/wallets/{id}/allocate-preview: post: tags: - Portfolio Wallets summary: Preview an allocation for a wallet without automatic rebalancing description: >- Validates explicit dollar movements and returns each affected position's value before and after. This endpoint is read-only. operationId: previewWalletAllocationV2 parameters: - name: id in: path required: true schema: type: string format: uuid description: Wallet ID requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/AllocationPreviewRequest' example: allocations: - from: cash:base:usdc to: morpho-gauntlet-usdc amountUsd: '1000.000000' responses: '200': description: Allocation preview content: application/json: schema: $ref: '#/components/schemas/AllocationPreview' example: positions: - id: cash:base:usdc label: USDC Cash beforeUsd: '2500.000000' afterUsd: '1500.000000' deltaUsd: '-1000.000000' - id: morpho-gauntlet-usdc label: Morpho Gauntlet USDC Prime beforeUsd: '0.000000' afterUsd: '1000.000000' deltaUsd: '1000.000000' '400': description: Invalid or unbalanced allocation changes content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' '409': description: >- The wallet settings, balance, route, or current workflow prevent this allocation content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: operation_not_supported: value: error: >- This wallet has autoRebalance set to true. Use PATCH /v2/wallets/{id}/strategy instead. code: operation_not_supported '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: AllocationPreviewRequest: type: object required: - allocations additionalProperties: false properties: allocations: type: array minItems: 1 maxItems: 100 description: >- Explicit dollar movements between wallet positions and eligible yield sources. items: $ref: '#/components/schemas/AllocationMovementInput' AllocationPreview: type: object required: - positions properties: positions: type: array minItems: 2 items: $ref: '#/components/schemas/AllocationPreviewPosition' ErrorResponse: type: object required: - error - code properties: error: type: string description: >- Human-readable error message. May change without notice; do not parse programmatically. code: type: string description: >- Machine-readable error code. Stable across API versions — safe to switch on in client code. enum: - validation_error - unknown_parameters - unsupported_chain - unsupported_token - invalid_destination_address - precision_overflow - invalid_cursor - unauthenticated - forbidden - wallet_not_found - wallet_limit_reached - withdrawal_not_found - deposit_not_found - yield_source_not_found - wallet_projection_unavailable - insufficient_funds - duplicate_request_id - request_id_conflict - invalid_position_weight - invalid_withdrawal_plan - payout_not_found - webhook_not_found - webhook_duplicate_url - withdrawal_not_cancellable - withdrawal_already_cancelled - withdrawal_payout_in_progress - withdrawal_policy_required - workflow_conflict - payout_already_terminal - payout_in_progress - payout_not_retryable - address_book_entry_not_found - address_book_duplicate_entry - address_book_whitelist_violation - rate_limited - rate_limit_exceeded - internal_error - wallet_creation_failed - service_temporarily_unavailable AllocationMovementInput: type: object required: - from - to - amountUsd additionalProperties: false properties: from: type: string description: Source position ID from the wallet response. to: type: string description: Destination ID from the wallet response or yield-source catalog. amountUsd: type: string pattern: ^(0|[1-9]\d*)(\.\d{1,6})?$ description: Positive dollar amount to move, with at most six decimal places. AllocationPreviewPosition: type: object required: - id - label - beforeUsd - afterUsd - deltaUsd properties: id: type: string label: type: string beforeUsd: type: string pattern: ^(0|[1-9]\d*)\.\d{6}$ description: >- Position value before the allocation, with exactly six decimal places. afterUsd: type: string pattern: ^(0|[1-9]\d*)\.\d{6}$ description: >- Position value after the allocation, with exactly six decimal places. deltaUsd: type: string pattern: ^-?(0|[1-9]\d*)\.\d{6}$ description: Signed position value change, with exactly six decimal places. 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 NotFound: description: >- The requested resource does not exist or is not visible to the authenticated organization. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: Portfolio wallet not found code: wallet_not_found 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 ````