> ## Documentation Index > Fetch the complete documentation index at: https://docs.autoprintfarm.com/llms.txt > Use this file to discover all available pages before exploring further. # Adjust finished-good stock with a reason > **Side effect:** changes `finished_goods.ready_stock` by the signed `adjustment` delta and recalculates the item's status (in_stock / low_stock / out_of_stock). Returns 400 if the resulting stock would be negative. The `reason` enum excludes internal reasons (`print_completion`, `order_fulfillment`, `assembly_completed`) which are reserved for events emitted by other handlers. ## OpenAPI ````yaml /api-reference/openapi.json post /inventory/{id}/adjust openapi: 3.1.0 info: title: AutoPrintFarm Public API version: 1.0.0 description: >- Public API for AutoPrintFarm — read + write surface for printers, jobs, inventory, orders, SKUs, files, worklist, and assembly. Authorization uses three scopes: `read` (any list/get), `write` (data mutations — create, update, delete, uploads, fulfillment), and `control` (physical printer actions: start, pause, resume, stop, heaters, light, filament). Authenticate with an API key minted from Settings → API Keys in the AutoPrintFarm dashboard. contact: name: AutoPrintFarm url: https://autoprintfarm.com servers: - url: https://api.autoprintfarm.com/public/v1 description: Production security: - bearerAuth: [] tags: - name: Printers description: Printer fleet status - name: Jobs description: Print job queue and history - name: Inventory description: Finished-goods stock levels - name: Orders description: Customer orders and line items - name: Wiki description: Internal documentation articles - name: Worklist description: Operational task queue - name: Products description: Product catalog, SKUs, components, and color presets - name: Files description: Print file metadata and versions - name: Hubs description: Hub fleet and connection status - name: Assembly description: Post-print assembly tasks with bundled wiki - name: Materials description: Filament, components, packaging, and printer parts inventory - name: Analytics description: >- Dashboard rollups and reporting (overview, production, printers, failures, inventory, revenue) paths: /inventory/{id}/adjust: post: tags: - Inventory summary: Adjust finished-good stock with a reason description: >- **Side effect:** changes `finished_goods.ready_stock` by the signed `adjustment` delta and recalculates the item's status (in_stock / low_stock / out_of_stock). Returns 400 if the resulting stock would be negative. The `reason` enum excludes internal reasons (`print_completion`, `order_fulfillment`, `assembly_completed`) which are reserved for events emitted by other handlers. parameters: - schema: type: string description: Finished-good row id. required: true description: Finished-good row id. name: id in: path requestBody: content: application/json: schema: type: object properties: adjustment: type: integer description: >- Signed integer delta to apply to `ready_stock` (positive to add, negative to remove). Rejected with 400 if the result would be negative. reason: type: string enum: - manual - inventory_count - correction - damaged - returned default: manual description: >- Reason for the adjustment, recorded for audit. Internal reasons (`print_completion`, `order_fulfillment`, `assembly_completed`) are reserved for events emitted by other handlers and are not accepted here. notes: type: string maxLength: 500 description: Optional free-form note (max 500 chars). required: - adjustment responses: '200': description: Stock adjusted content: application/json: schema: type: object properties: success: type: boolean enum: - true data: type: object properties: id: type: string previous_stock: type: number adjustment: type: number new_stock: type: number previous_status: type: - string - 'null' new_status: type: string is_low_stock: type: boolean reason: type: string required: - id - previous_stock - adjustment - new_stock - previous_status - new_status - is_low_stock - reason required: - success - data '400': description: Invalid adjustment content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Missing, invalid, revoked, or expired API key content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: API key lacks the required scope content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Item not found content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Rate limit exceeded (120 req/min/key) content: application/json: schema: $ref: '#/components/schemas/Error' security: - bearerAuth: - write components: schemas: Error: type: object properties: success: type: boolean enum: - false error: type: object properties: code: type: string description: >- Machine-readable error code (e.g. NOT_FOUND, VALIDATION_ERROR, FORBIDDEN, HUB_OFFLINE). Stable across releases — use this for branching. example: NOT_FOUND message: type: string description: >- Human-readable error message. May vary across releases — do not branch on this. example: Resource not found details: description: >- Optional structured detail. For VALIDATION_ERROR this is `{ field: [messages] }`. required: - code - message description: Error detail object required: - success - error description: Standard error response envelope securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: apf_live_<64 hex> description: >- API keys are minted in the AutoPrintFarm web app under Settings → API Keys. Send as `Authorization: Bearer apf_live_...`. Keys are shown exactly once at creation and can be revoked at any time. ````