{ "info": { "_postman_id": "de9bc813-f2e6-4a89-b2e9-3f9ba0bcca33", "name": "LALAL.AI Batch Stem Separation Voice Change API", "description": "\nThis is the LALAL.AI API.\n\nTo authenticate, provide your license key in the `X-License-Key` header of each request.\n\nTypical usage example:\n1) Upload a file using the '/upload/' endpoint to get a 'source_id'.\n2) Start a splitting task using the '/split/' endpoint with the obtained 'source_id' and desired presets.\n3) Check the status of your task using the '/check/' endpoint with the returned 'task_id'.\n4) Once the task is complete, download the processed files using urls from the '/check/' response.\n5) (If needed), you can delete the source file and all its resulting tracks from our servers, using the '/delete/' endpoint with the 'source_id'.\n\nNotes:\n\nYou can use the same source_id for concurrent splitting tasks.\n\nYou can check multiple task IDs in a single '/check/' request by providing a list of 'task_ids'.\n\n", "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json", "createdAt": "2026-07-28T02:02:16.000Z", "updatedAt": "2026-07-28T02:02:16.000Z", "lastUpdatedBy": "35240", "uid": "35240-de9bc813-f2e6-4a89-b2e9-3f9ba0bcca33" }, "item": [ { "name": "api", "item": [ { "name": "v1", "item": [ { "name": "change_voice", "item": [ { "name": "Changes voice in the audio file using voice pack", "id": "60efacaa-8817-4b2c-be4a-0d16cc86434e", "protocolProfileBehavior": { "disableBodyPruning": true }, "request": { "auth": { "type": "apikey", "apikey": [ { "key": "key", "value": "X-License-Key", "type": "string" }, { "key": "value", "value": "{{apiKey}}", "type": "string" }, { "key": "in", "value": "header", "type": "string" } ] }, "method": "POST", "header": [ { "key": "Content-Type", "value": "application/json" }, { "key": "Accept", "value": "application/json" } ], "body": { "mode": "raw", "raw": "{\n \"source_id\": \"\",\n \"presets\": {\n \"voice_pack_id\": \"\",\n \"accent\": 1,\n \"tonality_reference\": \"source_file\",\n \"dereverb_enabled\": false,\n \"encoder_format\": \"mp3\"\n },\n \"idempotency_key\": \"\"\n}", "options": { "raw": { "headerFamily": "json", "language": "json" } } }, "url": { "raw": "{{baseUrl}}/api/v1/change_voice/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "change_voice", "" ] }, "description": "\n For 'voice_pack_id' parameter use 'pack_id' from /voice_packs/list/ endpoint or one of legal packs: ['ALEX_KAYE', 'STASIA_FAYE', 'NICOLAAS_HAAS', 'NIK_ZEL', 'OLIA_CHEBO', 'YVAR_DE_GROOT', 'VETRANA']\n\n Result of /check/ includes 1 track with label 'converted_mix'.\n {\"label\":\"converted_mix\", \"type\":\"back\", \"url\":\"...\"}\n " }, "response": [ { "id": "51d18d48-3b1c-4e09-86fb-88b7df9b955b", "name": "OK", "originalRequest": { "method": "POST", "header": [ { "key": "Content-Type", "value": "application/json" }, { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "body": { "mode": "raw", "raw": "{\n \"source_id\": \"\",\n \"presets\": {\n \"voice_pack_id\": \"\",\n \"accent\": 1,\n \"tonality_reference\": \"source_file\",\n \"dereverb_enabled\": false,\n \"encoder_format\": \"mp3\"\n },\n \"idempotency_key\": \"\"\n}", "options": { "raw": { "headerFamily": "json", "language": "json" } } }, "url": { "raw": "{{baseUrl}}/api/v1/change_voice/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "change_voice", "" ] } }, "status": "OK", "code": 200, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"task_id\": \"\"\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-51d18d48-3b1c-4e09-86fb-88b7df9b955b" }, { "id": "2bf4d4e8-a94a-4f3c-8aed-f01446c3d2af", "name": "Bad Request", "originalRequest": { "method": "POST", "header": [ { "key": "Content-Type", "value": "application/json" }, { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "body": { "mode": "raw", "raw": "{\n \"source_id\": \"\",\n \"presets\": {\n \"voice_pack_id\": \"\",\n \"accent\": 1,\n \"tonality_reference\": \"source_file\",\n \"dereverb_enabled\": false,\n \"encoder_format\": \"mp3\"\n },\n \"idempotency_key\": \"\"\n}", "options": { "raw": { "headerFamily": "json", "language": "json" } } }, "url": { "raw": "{{baseUrl}}/api/v1/change_voice/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "change_voice", "" ] } }, "status": "Bad Request", "code": 400, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"detail\": \"\",\n \"code\": \"\"\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-2bf4d4e8-a94a-4f3c-8aed-f01446c3d2af" }, { "id": "131b63b8-754b-403d-831f-44231b47c535", "name": "Unprocessable Entity", "originalRequest": { "method": "POST", "header": [ { "key": "Content-Type", "value": "application/json" }, { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "body": { "mode": "raw", "raw": "{\n \"source_id\": \"\",\n \"presets\": {\n \"voice_pack_id\": \"\",\n \"accent\": 1,\n \"tonality_reference\": \"source_file\",\n \"dereverb_enabled\": false,\n \"encoder_format\": \"mp3\"\n },\n \"idempotency_key\": \"\"\n}", "options": { "raw": { "headerFamily": "json", "language": "json" } } }, "url": { "raw": "{{baseUrl}}/api/v1/change_voice/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "change_voice", "" ] } }, "status": "Unprocessable Entity (WebDAV) (RFC 4918)", "code": 422, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"detail\": \"\"\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-131b63b8-754b-403d-831f-44231b47c535" } ], "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-60efacaa-8817-4b2c-be4a-0d16cc86434e" } ], "id": "b25bd476-39cd-4d74-81e5-b02b9543bd94", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-b25bd476-39cd-4d74-81e5-b02b9543bd94" }, { "name": "voice_packs", "item": [ { "name": "list", "item": [ { "name": "Lists voice packs available to the user", "id": "e8d37d72-7522-4569-9bc5-8f8ef7d2c668", "protocolProfileBehavior": { "disableBodyPruning": true }, "request": { "auth": { "type": "apikey", "apikey": [ { "key": "key", "value": "X-License-Key", "type": "string" }, { "key": "value", "value": "{{apiKey}}", "type": "string" }, { "key": "in", "value": "header", "type": "string" } ] }, "method": "POST", "header": [ { "key": "Accept", "value": "application/json" } ], "url": { "raw": "{{baseUrl}}/api/v1/voice_packs/list/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "voice_packs", "list", "" ] }, "description": "Helps to find pack_id for /change_voice/ endpoint." }, "response": [ { "id": "d7877625-fd8d-42f0-aaae-33a1ad6de960", "name": "OK", "originalRequest": { "method": "POST", "header": [ { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "url": { "raw": "{{baseUrl}}/api/v1/voice_packs/list/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "voice_packs", "list", "" ] } }, "status": "OK", "code": 200, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"packs\": [\n {\n \"name\": \"\",\n \"pack_id\": \"\",\n \"created\": \"\"\n },\n {\n \"name\": \"\",\n \"pack_id\": \"\",\n \"created\": \"\"\n }\n ]\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-d7877625-fd8d-42f0-aaae-33a1ad6de960" }, { "id": "22fbb981-3e03-441c-a26d-ef3db8d3e343", "name": "Bad Request", "originalRequest": { "method": "POST", "header": [ { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "url": { "raw": "{{baseUrl}}/api/v1/voice_packs/list/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "voice_packs", "list", "" ] } }, "status": "Bad Request", "code": 400, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"detail\": \"\",\n \"code\": \"\"\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-22fbb981-3e03-441c-a26d-ef3db8d3e343" }, { "id": "5a0f07cb-a8dd-4376-9ebf-8fcc8c38034a", "name": "Unprocessable Entity", "originalRequest": { "method": "POST", "header": [ { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: apikey", "key": "X-License-Key", "value": "" } ], "url": { "raw": "{{baseUrl}}/api/v1/voice_packs/list/", "host": [ "{{baseUrl}}" ], "path": [ "api", "v1", "voice_packs", "list", "" ] } }, "status": "Unprocessable Entity (WebDAV) (RFC 4918)", "code": 422, "_postman_previewlanguage": "json", "header": [ { "key": "Content-Type", "value": "application/json" } ], "cookie": [], "responseTime": null, "body": "{\n \"detail\": \"\"\n}", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-5a0f07cb-a8dd-4376-9ebf-8fcc8c38034a" } ], "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-e8d37d72-7522-4569-9bc5-8f8ef7d2c668" } ], "id": "70a3077a-c93c-4a66-a1c0-cffe2130a0ca", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-70a3077a-c93c-4a66-a1c0-cffe2130a0ca" } ], "id": "d7f1f0db-4065-49da-9a5c-49f77e8f1765", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-d7f1f0db-4065-49da-9a5c-49f77e8f1765" } ], "id": "95768861-ba8e-4085-8efb-697e11fcaa48", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-95768861-ba8e-4085-8efb-697e11fcaa48" } ], "id": "36985df0-5fb7-44a7-8161-3b145a7b797d", "createdAt": "2026-07-28T02:02:17.000Z", "updatedAt": "2026-07-28T02:02:17.000Z", "uid": "35240-36985df0-5fb7-44a7-8161-3b145a7b797d" } ], "variable": [ { "key": "baseUrl", "value": "https://www.lalal.ai" } ] }