> ## Documentation Index > Fetch the complete documentation index at: https://docs.oumla.com/llms.txt > Use this file to discover all available pages before exploring further. # Get collection by ID > Get a single collection by its ID. ## OpenAPI ````yaml /api-reference/openapi.json get /api/v1/tokenization/collections/{id} openapi: 3.0.0 info: title: Oumla Core Server description: >- Core API. Errors, request and response are documented per endpoint. Error response shape: code, category, message, statusCode, path, timestamp, requestId. version: '1.0' contact: {} servers: - url: https://sandbox.oumla.com description: Mainnet x-fern-server-name: Mainnet security: [] tags: [] paths: /api/v1/tokenization/collections/{id}: get: tags: - tokenization summary: Get collection by ID description: Get a single collection by its ID. operationId: getCollectionById parameters: - name: id required: true in: path description: Collection ID schema: type: string - $ref: '#/components/parameters/SdkVersionHeader' responses: '200': description: Collection by ID content: application/json: schema: $ref: '#/components/schemas/GetCollectionByIdResponseDto' '401': description: >- Unauthorized – invalid or missing token. **Applicable error codes and client messages** The response body contains one of the following error codes and the corresponding client-facing message. | Code | Client message | |------|----------------| | ERR-008 | You need to sign in to continue. | | ERR-011 | Your session is invalid or expired. Please sign in again. | content: application/json: schema: allOf: - $ref: '#/components/schemas/ApiErrorResponseDto' properties: code: type: string enum: - ERR_008 - ERR_011 description: >- One of: ERR-008: You need to sign in to continue.; ERR-011: Your session is invalid or expired. Please sign in again. message: type: string description: >- Client-facing message for this error code (see table above). example: code: ERR_008 message: You need to sign in to continue. category: AUTHORIZATION statusCode: 401 path: /api/v1/example timestamp: '2025-02-20T12:00:00.000Z' requestId: req-example-id '403': description: >- Forbidden – insufficient permissions. **Applicable error codes and client messages** The response body contains one of the following error codes and the corresponding client-facing message. | Code | Client message | |------|----------------| | ERR-009 | You don't have permission to do that. | | ERR-410 | Error occurred | content: application/json: schema: allOf: - $ref: '#/components/schemas/ApiErrorResponseDto' properties: code: type: string enum: - ERR_009 - ERR_410 description: >- One of: ERR-009: You don't have permission to do that.; ERR-410: Error occurred message: type: string description: >- Client-facing message for this error code (see table above). example: code: ERR_009 message: You don't have permission to do that. category: AUTHORIZATION statusCode: 403 path: /api/v1/example timestamp: '2025-02-20T12:00:00.000Z' requestId: req-example-id '404': description: >- Resource not found. **Applicable error codes and client messages** The response body contains one of the following error codes and the corresponding client-facing message. | Code | Client message | |------|----------------| | ERR-068 | Collection not found. | | ERR-066 | Contract not found. | content: application/json: schema: allOf: - $ref: '#/components/schemas/ApiErrorResponseDto' properties: code: type: string enum: - ERR_068 - ERR_066 description: >- One of: ERR-068: Collection not found.; ERR-066: Contract not found. message: type: string description: >- Client-facing message for this error code (see table above). example: code: ERR_068 message: Collection not found. category: RESOURCE statusCode: 404 path: /api/v1/example timestamp: '2025-02-20T12:00:00.000Z' requestId: req-example-id '500': description: >- Internal server error. **Applicable error codes and client messages** The response body contains one of the following error codes and the corresponding client-facing message. | Code | Client message | |------|----------------| | ERR-019 | Something went wrong on our side. | | ERR-999 | An unexpected error occurred. Please try again. | content: application/json: schema: allOf: - $ref: '#/components/schemas/ApiErrorResponseDto' properties: code: type: string enum: - ERR_019 - ERR_999 description: >- One of: ERR-019: Something went wrong on our side.; ERR-999: An unexpected error occurred. Please try again. message: type: string description: >- Client-facing message for this error code (see table above). example: code: ERR_019 message: Something went wrong on our side. category: SYSTEM statusCode: 500 path: /api/v1/example timestamp: '2025-02-20T12:00:00.000Z' requestId: req-example-id security: - x-api-key: [] components: parameters: SdkVersionHeader: name: x-sdk-version in: header description: SDK version header required: true schema: type: string default: 1.0.0 schemas: GetCollectionByIdResponseDto: type: object properties: collection: $ref: '#/components/schemas/CollectionItemDto' ApiErrorResponseDto: type: object properties: message: type: string description: >- Human-readable error message for the client (see ErrorClientMessage per code) example: Organization not found. code: type: string enum: - ERR_000 - ERR_001 - ERR_002 - ERR_003 - ERR_006 - ERR_008 - ERR_009 - ERR_010 - ERR_011 - ERR_012 - ERR_013 - ERR_014 - ERR_015 - ERR_016 - ERR_017 - ERR_018 - ERR_019 - ERR_020 - ERR_021 - ERR_022 - ERR_888 - ERR_999 - ERR_023 - ERR_026 - ERR_036 - ERR_046 - ERR_056 - ERR_066 - ERR_068 - ERR_067 - ERR_076 - ERR_086 - ERR_096 - ERR_106 - ERR_116 - ERR_126 - ERR_136 - ERR_146 - ERR_147 - ERR_156 - ERR_166 - ERR_176 - ERR_186 - ERR_196 - ERR_200 - ERR_201 - ERR_202 - ERR_203 - ERR_204 - ERR_205 - ERR_206 - ERR_207 - ERR_208 - ERR_209 - ERR_210 - ERR_211 - ERR_212 - ERR_213 - ERR_214 - ERR_215 - ERR_216 - ERR_217 - ERR_226 - ERR_236 - ERR_237 - ERR_238 - ERR_239 - ERR_240 - ERR_241 - ERR_242 - ERR_246 - ERR_256 - ERR_266 - ERR_276 - ERR_286 - ERR_296 - ERR_300 - ERR_301 - ERR_302 - ERR_303 - ERR_304 - ERR_305 - ERR_310 - ERR_311 - ERR_312 - ERR_313 - ERR_320 - ERR_321 - ERR_322 - ERR_323 - ERR_324 - ERR_325 - ERR_326 - ERR_327 - ERR_328 - ERR_400 - ERR_401 - ERR_402 - ERR_403 - ERR_404 - ERR_405 - ERR_410 - ERR_411 - ERR_412 - ERR_500 - ERR_501 - ERR_502 - ERR_503 - ERR_600 - ERR_601 - ERR_602 - ERR_603 - ERR_604 - ERR_701 - ERR_702 - ERR_703 - ERR_704 - ERR_705 - ERR_706 - ERR_707 - ERR_708 - ERR_709 - ERR_710 - ERR_711 description: >- Application error code. Possible values are listed per endpoint in the response schema (e.g. ERR_013, ERR_008). category: type: string enum: - CONFLICT - VALIDATION - CRYPTOGRAPHIC - NETWORK - DATABASE - EXTERNAL_SERVICE - UNKNOWN_ERROR - RESOURCE - AUTHORIZATION - SYSTEM description: Error category for grouping and handling. statusCode: type: number description: HTTP status code example: 404 minimum: 400 path: type: string description: Request path that produced the error example: /api/v1/wallets timestamp: type: string description: ISO 8601 timestamp example: '2025-02-20T12:00:00.000Z' requestId: type: string description: Request ID for tracing required: - code - category - statusCode - path - timestamp CollectionItemDto: type: object properties: id: type: string status: type: string type: type: string displayName: type: string createdAt: type: string updatedAt: type: string network: type: string collectionMetadata: $ref: '#/components/schemas/CollectionMetadataDto' CollectionMetadataDto: type: object properties: name: type: string symbol: type: string standard: type: string contractAddress: type: string securitySchemes: x-api-key: type: apiKey in: header name: x-api-key description: API key for authentication ````