> ## Documentation Index > Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # List Build Aliases > Lists details of all build aliases for a title. Accepts tokens for title and if game client access is enabled, allows game client to request list of builds with player entity token. Allowed entity token types: title, title_player_account ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | APINotEnabledForGameClientAccess | 1082 | | MultiplayerServerBadRequest | 1382 | | MultiplayerServerForbidden | 1384 | | MultiplayerServerInternalServerError | 1387 | | MultiplayerServerNotFound | 1385 | | MultiplayerServerUnauthorized | 1383 | | MultiplayerServerUnavailable | 1388 | | ProductDisabledForTitle | 1609 | ## OpenAPI ````yaml /services/playfab/api-references/rest/multiplayer/multiplayer.openapi.json post /MultiplayerServer/ListBuildAliases openapi: 3.0.0 info: version: '260922' title: PlayFab Multiplayer API description: >- API methods for managing multiplayer servers. API methods for managing parties. The lobby service helps players group together to play multiplayer games. It is often used as a rendezvous point for players to share connection information. The TrueSkill service helps titles to estimate a player's skill based on their match results. The player skill values from this service are commonly used by a matchmaking service to provide players with balanced matches. termsOfService: https://playfab.com/terms/ contact: url: https://community.playfab.com/index.html license: name: Apache 2.0 url: https://github.com/PlayFab/API_Specs/blob/master/LICENSE servers: - url: https://{titleId}.playfabapi.com description: PlayFab title endpoint variables: titleId: default: your_title_id description: Your PlayFab title ID (hex). security: [] tags: - name: Lobby description: '' - name: Matchmaking description: Matchmaking APIs - name: Matchmaking Admin description: Matchmaking Admin APIs - name: MultiplayerServer description: Multiplayer Server APIs - name: PubSub description: PlayFab PubSub APIs - name: TrueSkill description: TrueSkill APIs - name: TrueSkill Admin description: TrueSkill Admin APIs paths: /MultiplayerServer/ListBuildAliases: post: tags: - MultiplayerServer summary: List Build Aliases description: > Lists details of all build aliases for a title. Accepts tokens for title and if game client access is enabled, allows game client to request list of builds with player entity token. Allowed entity token types: title, title_player_account ## Error codes This operation may return the following PlayFab errors: | Error | Code | | --- | --- | | APINotEnabledForGameClientAccess | 1082 | | MultiplayerServerBadRequest | 1382 | | MultiplayerServerForbidden | 1384 | | MultiplayerServerInternalServerError | 1387 | | MultiplayerServerNotFound | 1385 | | MultiplayerServerUnauthorized | 1383 | | MultiplayerServerUnavailable | 1388 | | ProductDisabledForTitle | 1609 | operationId: ListBuildAliases requestBody: content: application/json: schema: $ref: '#/components/schemas/ListBuildAliasesRequest' description: >- Returns a list of summarized details of all multiplayer server builds for a title. responses: '200': $ref: '#/components/responses/ListBuildAliasesResponse' '400': $ref: '#/components/responses/ApiErrorWrapper' security: - EntityToken: [] components: schemas: ListBuildAliasesRequest: description: >- Returns a list of summarized details of all multiplayer server builds for a title. type: object properties: CustomTags: description: >- The optional custom tags associated with the request (e.g. build number, external trace identifiers, etc.). type: object PageSize: description: The page size for the request. type: number x-actualtype: int32 SkipToken: description: The skip token for the paged request. type: string example: PageSize: 10 ListBuildAliasesResponse: type: object properties: BuildAliases: description: The list of build aliases for the title type: array items: $ref: '#/components/schemas/BuildAliasDetailsResponse' x-isclass: true PageSize: description: The page size on the response. type: number x-actualtype: int32 SkipToken: description: The skip token for the paged response. type: string required: - PageSize ApiErrorWrapper: description: The basic wrapper around every failed API response type: object properties: code: description: Numerical HTTP code type: integer status: description: String HTTP code type: string error: description: Playfab error code type: string errorCode: description: Numerical PlayFab error code type: integer errorMessage: description: Description for the PlayFab errorCode type: string errorDetails: description: Detailed description of individual issues with the request object type: object required: - code - errorCode BuildAliasDetailsResponse: type: object properties: AliasId: description: The guid string alias Id of the alias to be created or updated. type: string AliasName: description: The alias name. type: string BuildSelectionCriteria: description: Array of build selection criteria. type: array items: $ref: '#/components/schemas/BuildSelectionCriterion' x-isclass: true example: AliasId: 21781fa8-096d-4d9c-b699-75433d579285 AliasName: AliasName BuildSelectionCriteria: - BuildWeightDistribution: 53781fa8-006d-4e9c-b733-57433d579285: 1 BuildSelectionCriterion: type: object properties: BuildWeightDistribution: description: >- Dictionary of build ids and their respective weights for distribution of allocation requests. type: object x-actualtype: uint32 example: BuildWeightDistribution: 53781fa8-006d-4e9c-b733-57433d579285: 1 responses: ListBuildAliasesResponse: description: '' content: application/json: schema: type: object properties: code: type: integer description: >- The Http status code. If X-ReportErrorAsSuccess header is set to true, this will report the actual http error code. status: type: string description: The Http status code as a string. data: $ref: '#/components/schemas/ListBuildAliasesResponse' ApiErrorWrapper: description: This is the outer wrapper for all responses with errors content: application/json: schema: $ref: '#/components/schemas/ApiErrorWrapper' securitySchemes: EntityToken: type: apiKey in: header name: X-EntityToken description: >- This API requires an Entity Session Token, available from the Entity GetEntityToken method. ```` ## Related topics - [List Build Aliases](/services/playfab/api-references/rest/multiplayer/multiplayer-server/list-build-aliases.md) - [PFMultiplayerServerListBuildAliasesResponse](/services/playfab/api-references/c/pfmultiplayerservertypes/structs/pfmultiplayerserverlistbuildaliasesresponse.md) - [PFMultiplayerServerListBuildAliasesRequest](/services/playfab/api-references/c/pfmultiplayerservertypes/structs/pfmultiplayerserverlistbuildaliasesrequest.md) - [PFMultiplayerServerListBuildAliasesAsync](/services/playfab/api-references/c/pfmultiplayerserver/functions/pfmultiplayerserverlistbuildaliasesasync.md) - [Managing a build alias and allocating to it](/services/playfab/multiplayer/servers/allocating-with-build-alias.md)