> ## Documentation Index > Fetch the complete documentation index at: https://docs.beinfi.com/llms.txt > Use this file to discover all available pages before exploring further. # Publish a version > Publishes a `draft` version. From here on its pricing is fixed and the product can be sold. By default the published version becomes the product's default (what a buyer gets when nothing names another one) and a first payment link is created. Send `{"default": false}` to publish an offer instead: the version is sellable, but only through a payment link created with `productVersionId`. Use it to run a promotional price alongside the standard one without it showing up in your storefront. This only works once the product already has a default version; before that, the response is `422`. ## OpenAPI ````yaml /api-reference/openapi.en.json post /products/{productID}/versions/{versionID}/publish openapi: 3.1.0 info: title: Infi API version: 0.0.1 description: > The Infi REST API: catalog, customers, usage metering, subscriptions, invoices, payments and checkout. **Authentication.** Send your secret key as `Authorization: Bearer sk_test_…` (sandbox) or `sk_live_…` (production). The key prefix selects the environment. Checkout routes (`/pay/*`) and `/public/*` take no key: they run in the payer's browser. **Idempotency.** Every request that changes data requires an `Idempotency-Key` header. A retry with the same key returns the original response instead of running again. **Amounts.** Money and quantities travel as decimal strings (`"150.00"`, `"0.0001"`), never as floating-point numbers. **Errors.** The body carries `error_code` (stable, branch on it), `message` (for humans) and `tracer_id` (send it to support). Rate-limit and idempotency errors are nested under `error`, with `code` and `request_id`. servers: - url: https://api-sandbox.beinfi.com description: Sandbox - url: https://api.beinfi.com description: Production security: - bearerAuth: [] tags: - name: Catalog - name: Customers - name: Metering - name: Subscriptions - name: Invoices - name: Payments - name: Checkout - name: Coupons - name: Billing - name: Account - name: Webhooks - name: Test account - name: Rail - name: Storefronts paths: /products/{productID}/versions/{versionID}/publish: parameters: - $ref: '#/components/parameters/ProductID' - $ref: '#/components/parameters/VersionID' post: tags: - Catalog summary: Publish a version description: > Publishes a `draft` version. From here on its pricing is fixed and the product can be sold. By default the published version becomes the product's default (what a buyer gets when nothing names another one) and a first payment link is created. Send `{"default": false}` to publish an offer instead: the version is sellable, but only through a payment link created with `productVersionId`. Use it to run a promotional price alongside the standard one without it showing up in your storefront. This only works once the product already has a default version; before that, the response is `422`. operationId: publishVersion parameters: - $ref: '#/components/parameters/IdempotencyKey' requestBody: required: false content: application/json: schema: $ref: '#/components/schemas/PublishVersionRequest' responses: '200': content: application/json: schema: $ref: '#/components/schemas/Version' description: The published version. '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' '409': content: application/json: schema: $ref: '#/components/schemas/Error' description: '`version_not_draft`: the version is already published.' '422': $ref: '#/components/responses/ValidationFailed' components: parameters: ProductID: name: productID in: path required: true schema: type: string format: uuid description: Product ID. VersionID: name: versionID in: path required: true schema: type: string format: uuid description: Product version ID. IdempotencyKey: name: Idempotency-Key in: header required: false schema: type: string description: >- A unique key per operation (a UUID works). Retrying with the same key returns the original response. schemas: PublishVersionRequest: type: object properties: default: type: boolean default: true description: >- `true` (or omitted) makes this the product's default version. `false` publishes it as an offer, sold only by a link that names it. description: Optional. With no body, the version is published as the default. Version: type: object properties: id: type: string format: uuid productId: type: string format: uuid version: type: integer description: Sequential version number (1, 2, 3…). billingCycle: type: - string - 'null' enum: - weekly - monthly - annual - null description: '`weekly`, `monthly` or `annual`; `null` for non-recurring products.' basePrice: type: - string - 'null' description: Base price as a decimal string; `null` for a usage-only product. status: type: string enum: - draft - published - archived description: >- `draft` (editable), `published` (sellable, fixed pricing) or `archived`. isDefault: type: boolean description: >- Whether this is the version a buyer gets when nothing names another. A published version with `isDefault: false` is an offer: it is only sold through a payment link created with `productVersionId`. publishedAt: type: - string - 'null' format: date-time commitmentAmount: type: - string - 'null' description: >- Minimum charged per cycle, as a decimal string; `null` when there is none. commitmentResets: type: boolean description: >- `true`: the unused minimum is lost at cycle close. `false`: it rolls over. consumptionFloor: type: - string - 'null' description: >- Balance below which usage recording is refused. See `VersionConsumption.floor`. grants: type: array items: $ref: '#/components/schemas/VersionGrant' description: Usage credits the version grants. description: >- A product version: a snapshot of its pricing. A published version never changes; to change the price, create another. Error: type: object required: - message - error_code - tracer_id properties: message: type: string description: Human-readable sentence. error_code: $ref: '#/components/schemas/ErrorCode' description: Stable error code. Branch on it. tracer_id: type: string description: Request id. Include it when contacting support. description: >- The standard error body. It is flat (no `error` wrapper) and the trace id is `tracer_id`. VersionGrant: type: object required: - meter - amount - 'on' properties: meter: type: string description: >- The `name` of the meter credited (for example, `tokens`). `credits` is the general credits balance. amount: type: string description: Quantity to credit, as a decimal string. 'on': type: string enum: - cycle - payment description: >- `cycle`: at each new subscription period. `payment`: when the payment is confirmed. description: A usage credit granted by the version. NotFoundError: type: object required: - message - error_code - tracer_id - resource properties: message: type: string error_code: $ref: '#/components/schemas/ErrorCode' tracer_id: type: string resource: type: string ErrorCode: type: string examples: - internal_error - validation_failed - bad_request - unauthorized - forbidden - not_found - conflict - rate_limited description: >- Stable error code. The list is open: besides the generic codes, each area defines its own (`coupon_expired`, `insufficient_balance`, `version_not_draft`, `idempotency_key_reused`…). Handle a code you do not recognize by its HTTP status and show `message`; do not fail parsing the response. ValidationError: type: object required: - message - error_code - tracer_id - errors properties: message: type: string error_code: $ref: '#/components/schemas/ErrorCode' tracer_id: type: string errors: type: array items: type: object required: - field - value - constraint - description properties: field: type: string value: type: string constraint: type: string description: type: string description: >- Per-field detail (`field`, `description`). Always present on a `422`; may be empty. description: >- Body of a `422`. Same shape as `Error`, plus `errors[]` with per-field detail. That is where the sentence telling you what to fix lives (for example, "product has no published version"). responses: Unauthorized: content: application/json: schema: $ref: '#/components/schemas/Error' description: Missing or invalid API key. NotFound: content: application/json: schema: $ref: '#/components/schemas/NotFoundError' description: Resource not found. ValidationFailed: content: application/json: schema: $ref: '#/components/schemas/ValidationError' description: One or more fields are invalid. Per-field detail is in `errors[]`. securitySchemes: bearerAuth: type: http scheme: bearer description: >- Your account's secret key: `Authorization: Bearer sk_test_…` or `sk_live_…`. Server-side only. ````