> ## Documentation Index > Fetch the complete documentation index at: https://docs.summerengine.com/llms.txt > Use this file to discover all available pages before exploring further. # Begin a Build's client pack > Requires builds.write for the Game and a ready Build. ## OpenAPI ````yaml scripts/reference/sources/openapi/management.json POST /v1/management/games/{gameId}/builds/{buildId}/client-packages openapi: 3.1.0 info: title: Summer Creator Management API version: summer.management.creator/v1 description: >- Create and manage your Summer Games store games: store page drafts, revisions, preview links, media, builds and releases, and the owner approval that publishes them. servers: - url: https://api.summer.games security: - developerBearer: [] tags: - name: Games - name: Items - name: Media paths: /v1/management/games/{gameId}/builds/{buildId}/client-packages: parameters: - $ref: '#/components/parameters/GameID' - name: buildId in: path required: true schema: type: string post: tags: - Games summary: Begin a Build's client pack description: >- Requires builds.write for the Game and a ready Build. A Build has one client pack for every platform it declares: export one PCK whose textures every declared platform can read. Every declared platform must have a client template in the Build's selected set, and the scene and composition must pair with the Build's server (a Build without a host names no composition) before any bytes are sent. Identical declarations return the same upload. Packs up to 40 GiB upload straight to storage in the returned fixed-size parts; request part grants from :signParts. Part URLs are private credentials; upload bytes without account authorization, cookies or redirects. operationId: beginClientPackageUpload requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ClientPackageUploadRequest' responses: '200': description: Retained upload identity and, while bytes are awaited, its part plan content: application/json: schema: type: object required: - package properties: package: $ref: '#/components/schemas/ClientPackageUpload' upload: $ref: '#/components/schemas/ClientPackageUploadPlan' '404': description: Game or Build unavailable to this creator '409': description: >- Build not ready, scene and composition do not pair with its server, its template set lacks a declared platform, or the client version names other bytes '422': description: Invalid declaration '503': description: Package storage unavailable components: parameters: GameID: name: gameId in: path required: true schema: type: string pattern: ^game_[A-Za-z0-9_-]{8,123}$ schemas: ClientPackageUploadRequest: type: object additionalProperties: false required: - clientSha256 - clientSize - mainScene - version description: >- A Build's one client pack. Its declaration is immutable; a client version names exactly one pack for the Game. properties: clientSha256: type: string pattern: ^sha256:[0-9a-f]{64}$ clientSize: type: integer minimum: 100 maximum: 42949672960 mainScene: type: string description: >- Exact res:// .tscn scene: in a Build WorldDefinition for a game with a host, or the Build client entry point for one without. compositionPath: type: string description: >- Exact res:// .tres composition in the same WorldDefinition. Required for a game with a host; omitted for one without. version: type: string description: >- Client version: canonical vMAJOR.MINOR.PATCH with optional positive -rREVISION. Independent of the server version. ClientPackageUpload: type: object required: - id - gameId - buildId - clientSha256 - clientSize - mainScene - version - declarationSha256 - state - createdAt properties: id: type: string gameId: type: string buildId: type: string clientSha256: type: string pattern: ^sha256:[0-9a-f]{64}$ clientSize: type: integer minimum: 100 maximum: 42949672960 mainScene: type: string compositionPath: type: string version: type: string declarationSha256: type: string description: >- Digest of the pack's bytes, scene, composition and version. A qualification binds to it. state: type: string enum: - awaiting_upload - verifying - uploaded - rejected description: >- verifying means storage sealed the bytes and Platform has not finished reading them; uploaded means Platform inspected them and queued its checks. verificationError: type: string enum: - package_not_verified description: >- Present when background verification permanently rejected the stored bytes. verifications: type: array description: The latest check of this pack for each platform its Build declares. items: $ref: '#/components/schemas/ClientVerificationJob' createdAt: type: string format: date-time completedAt: type: string format: date-time ClientPackageUploadPlan: type: object required: - partSizeBytes - partCount description: >- Every part except the last is exactly partSizeBytes long; the last holds the remainder. properties: partSizeBytes: type: integer const: 67108864 partCount: type: integer minimum: 1 maximum: 640 ClientVerificationJob: type: object required: - id - gameId - buildId - uploadId - platform - state - createdAt - updatedAt properties: id: type: string gameId: type: string buildId: type: string platform: type: string enum: - android - ios - macos - windows uploadId: type: string state: type: string enum: - checking - ready - failed qualificationId: type: string errorCode: type: string errorMessage: type: string createdAt: type: string format: date-time updatedAt: type: string format: date-time completedAt: type: string format: date-time securitySchemes: developerBearer: type: http scheme: bearer bearerFormat: JWT description: >- Your Summer account token. An agent gets it by signing in with OAuth: `summer login --store` in the Summer CLI, or the Summer connector in an AI app. Agent tokens can call only the operations on these pages. Publishing needs an approval from the game's owner first. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.