> ## Documentation Index > Fetch the complete documentation index at: https://docs.batchrelay.com/llms.txt > Use this file to discover all available pages before exploring further. # Finalize an asset session ## OpenAPI ````yaml https://api.batchrelay.com/openapi.json post /v1/studios/{studio_id}/asset-sessions/{session_id}/finalize openapi: 3.1.0 info: description: >- Provider-neutral print catalog and prepared-media validation. This document covers only routes owned by the Go service; it deliberately excludes migration-proxied order lifecycle routes and all provider payloads. license: name: Proprietary url: https://github.com/SENTINELITE/Batch-Relay-Go/blob/main/README.md title: Batch Relay API version: 1.0.1 servers: - url: https://api.batchrelay.com security: [] tags: - description: Service health and the public API description. name: System - description: Test Mode session creation and API credential entry points. name: Authentication - description: >- Provider-neutral canonical catalog resources and platform-owned semantic definitions. name: Catalog - description: Studio-scoped guest checkout-link management. name: Checkout links - description: >- One-way operational event messages. Alert emails contain no message body and recipients read messages after Batch Relay authentication. name: Studio messages - description: >- Explicit, reviewable sandbox-to-Live promotion plans for forms, catalog, and storefront configuration. name: Sandbox promotions - description: Provider-neutral validation, quoting, and order lifecycle operations. name: Print orders - description: Managed fulfillment asset ingestion and metadata. name: Managed assets - description: Studio-scoped original asset upload sessions and objects. name: Studio assets - description: Prepared and confirmed event roster team changes. name: Event team changes - description: Authenticated studio, event, and form-management operations. name: Studio management - description: >- Authenticated studio retail catalog management. Draft and publication lifecycles are explicit per product or package. name: Studio catalog - description: >- Authenticated singular storefront assortment management. PATCH atomically publishes a new immutable assortment revision; no storefront draft lifecycle exists yet. name: Storefront - description: Managed media used by the studio retail catalog. name: Studio catalog assets - description: Template rendering job creation and retrieval. name: Template renders - description: >- Published browser-side template packages and short-lived server proof renders. Preview artifacts are never fulfillment artwork. name: Browser previews - description: API account and credential administration. name: API accounts paths: /v1/studios/{studio_id}/asset-sessions/{session_id}/finalize: parameters: - $ref: '#/components/parameters/ClientSurface' - $ref: '#/components/parameters/ClientVersion' - $ref: '#/components/parameters/InvocationMode' post: tags: - Asset sessions summary: Finalize an asset session operationId: finalizeAssetSession parameters: - $ref: '#/components/parameters/StudioID' - in: path name: session_id required: true schema: type: string - $ref: '#/components/parameters/IdempotencyKey' requestBody: content: application/json: schema: $ref: '#/components/schemas/AssetSessionFinalizeRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/AssetSession' description: Finalized session '503': description: Lifecycle unavailable security: - bearerAuth: [] components: parameters: ClientSurface: description: >- Untrusted optional analytics hint naming the calling client surface. It never affects authorization, routing, pricing, or behavior. in: header name: X-BatchRelay-Client-Surface required: false schema: maxLength: 100 minLength: 1 type: string ClientVersion: description: >- Untrusted optional analytics hint naming the calling client version. It never affects authorization, routing, pricing, or behavior. in: header name: X-BatchRelay-Client-Version required: false schema: maxLength: 100 minLength: 1 type: string InvocationMode: description: >- Untrusted optional analytics hint naming the invocation mode. It never affects authorization, routing, pricing, or behavior. in: header name: X-BatchRelay-Invocation-Mode required: false schema: maxLength: 100 minLength: 1 type: string StudioID: description: >- Stable public studio ID beginning with stu_. The API never selects a studio implicitly; a local CLI profile name is not a studio ID. in: path name: studio_id required: true schema: maxLength: 256 minLength: 5 pattern: ^stu_[A-Za-z0-9_-]+$ type: string IdempotencyKey: in: header name: Idempotency-Key required: true schema: maxLength: 200 minLength: 1 type: string schemas: AssetSessionFinalizeRequest: additionalProperties: false properties: expected_revision: minimum: 1 type: integer required: - expected_revision type: object AssetSession: additionalProperties: false properties: assets: items: $ref: '#/components/schemas/AssetSessionAsset' type: array destination_id: type: string destination_type: type: string id: type: string purpose: type: string revision: description: >- Monotonic lifecycle revision used as the expected_session_revision concurrency token. minimum: 1 type: integer status: type: string required: - id - status - purpose - destination_type - destination_id - revision - assets type: object AssetSessionAsset: additionalProperties: false properties: alt_text: type: string asset_id: type: string byte_count: type: integer client_local_id: type: string display_filename: type: string disposition: type: string media_type: type: string pixel_height: type: integer pixel_width: type: integer sha256: type: string status: type: string required: - asset_id - client_local_id - display_filename - media_type - byte_count - sha256 - status - disposition type: object securitySchemes: bearerAuth: bearerFormat: Batch Relay API key or anonymous session description: >- Batch Relay scoped API key or an anonymous Test Mode session. Scope names document required capabilities. Anonymous sessions are sandbox-only and do not authorize studio, event, billing, or Live Mode operations. scheme: bearer type: http ````