Upload Sessions

Upload sessions enable batch uploading of multiple tracks to a collection. You can optionally include a nested track object when creating the session to also create that track and receive its upload URL in the response.

The resolved player_color is accompanied by two read-only companions, player_color_light and player_color_dark, adjusted to stay legible on light and dark backgrounds respectively.

POST /v1/upload_session

Creates a new upload session for batch uploading tracks. By default returns an upload_session_id only — create tracks via POST /v1/upload/:upload_session_id/track. Optionally include a nested track object to also create that track and receive the per-track upload URL on this response.

Parameters

Name	Type	Required	Description
`collection_id`	uuid	Required	ID of the collection. Required unless the API key is scoped to a collection.
`creator_id`	uuid	Optional	ID of the creator
`organization_index`	string	Optional	Organization index (session-level)
`metadata`	object	Optional	Additional metadata (session-level)
`expires_in`	number	Optional	Session duration in seconds (default: 3600, min: 60, max: 86400)
`track` Optional track	object	Optional	When present, also create that track and append its upload fields to the response. Nested fields: file_name, organization_index, metadata.
`track.file_name` Optional track	string	Required	Original filename of the track. Required when track is present.
`track.organization_index` Optional track	string	Optional	Organization index for the track (separate from the session-level field).
`track.metadata` Optional track	object	Optional	Metadata for the track (separate from the session-level field).

Example Request

curl -X POST "https://api.audiodelivery.net/v1/upload_session" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "collection_id": "COLLECTION_ID",
  "expires_in": 7200
}'

const payload = {
  "collection_id": "COLLECTION_ID",
  "expires_in": 7200
};

const response = await fetch('https://api.audiodelivery.net/v1/upload_session', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload)
});

const data = await response.json();

import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/upload_session")!)
    request.httpMethod = "POST"
    request.setValue("Bearer YOUR_API_KEY", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    let bodyJSON = """
{
  "collection_id": "COLLECTION_ID",
  "expires_in": 7200
}
"""
    request.httpBody = bodyJSON.data(using: .utf8)
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val body = """{
  "collection_id": "COLLECTION_ID",
  "expires_in": 7200
}""".toRequestBody("application/json".toMediaType())
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/upload_session")
        .post(body)
        .addHeader("Authorization", "Bearer YOUR_API_KEY")
        .addHeader("Content-Type", "application/json")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.post(
    Uri.parse("https://api.audiodelivery.net/v1/upload_session"),
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
      "Content-Type": "application/json",
    },
    body: jsonEncode({
  "collection_id": "COLLECTION_ID",
  "expires_in": 7200
}),
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}

Example with an optional nested track:

Example Request

curl -X POST "https://api.audiodelivery.net/v1/upload_session" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "collection_id": "COLLECTION_ID",
  "track": {
    "file_name": "track-1.mp3"
  }
}'

const payload = {
  "collection_id": "COLLECTION_ID",
  "track": {
    "file_name": "track-1.mp3"
  }
};

const response = await fetch('https://api.audiodelivery.net/v1/upload_session', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload)
});

const data = await response.json();

import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/upload_session")!)
    request.httpMethod = "POST"
    request.setValue("Bearer YOUR_API_KEY", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    let bodyJSON = """
{
  "collection_id": "COLLECTION_ID",
  "track": {
    "file_name": "track-1.mp3"
  }
}
"""
    request.httpBody = bodyJSON.data(using: .utf8)
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val body = """{
  "collection_id": "COLLECTION_ID",
  "track": {
    "file_name": "track-1.mp3"
  }
}""".toRequestBody("application/json".toMediaType())
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/upload_session")
        .post(body)
        .addHeader("Authorization", "Bearer YOUR_API_KEY")
        .addHeader("Content-Type", "application/json")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.post(
    Uri.parse("https://api.audiodelivery.net/v1/upload_session"),
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
      "Content-Type": "application/json",
    },
    body: jsonEncode({
  "collection_id": "COLLECTION_ID",
  "track": {
    "file_name": "track-1.mp3"
  }
}),
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}

Optional nested track

Include a nested track object to create that track during session create — the response appends the same upload handles as the per-track endpoint. You can still add more tracks later with POST /v1/upload/:upload_session_id/track. For batch-only flows, omit track and create each track with that endpoint.

Response

{
"ok": true,
"upload_session_id": "uuid",
"upload_session": {
  "id": "uuid",
  "creator_id": "uuid | null",
  "collection_id": "uuid",
  "organization_index": "string | null",
  "metadata": {},
  "expires_at": "string"
},
"player_color": "string | null",
"player_color_light": "string | null",
"player_color_dark": "string | null",
"expires_at": "string"
}

Response when you include `track`

{
"ok": true,
"upload_session_id": "uuid",
"upload_session": {
  "id": "uuid",
  "creator_id": "uuid | null",
  "collection_id": "uuid",
  "organization_index": "string | null",
  "metadata": {},
  "expires_at": "string"
},
"player_color": "string | null",
"player_color_light": "string | null",
"player_color_dark": "string | null",
"expires_at": "string",
"track_id": "uuid",
"track": {
  "id": "uuid",
  "index": "string",
  "path": "string",
  "upload_url": "string"
},
"track_upload": {
  "method": "PUT",
  "upload_url": "string",
  "ttl": 0,
  "expires_at": "string"
},
"track_cover_upload": {
  "method": "POST",
  "upload_url": "string",
  "ttl": 0,
  "expires_at": "string"
}
}

GET /v1/upload_session/:upload_session_id

Retrieves details about an upload session. No authentication required — the session ID acts as the credential.

Parameters

Name	Type	Required	Description
`upload_session_id`	uuid	Required	The ID of the upload session (path parameter)

Example Request

curl -X GET "https://api.audiodelivery.net/v1/upload_session/SESSION_ID"

const response = await fetch('https://api.audiodelivery.net/v1/upload_session/SESSION_ID');

const data = await response.json();

import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/upload_session/SESSION_ID")!)
    request.httpMethod = "GET"

    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/upload_session/SESSION_ID")

        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.get(Uri.parse("https://api.audiodelivery.net/v1/upload_session/SESSION_ID"));
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}

Response

{
"ok": true,
"upload_session_id": "uuid",
"upload_session": {
  "id": "uuid",
  "creator_id": "uuid | null",
  "collection_id": "uuid",
  "organization_index": "string | null",
  "metadata": {},
  "expires_at": "string"
},
"player_color": "string | null",
"player_color_light": "string | null",
"player_color_dark": "string | null",
"expires_at": "string"
}

POST /v1/upload/:upload_session_id/track

Creates a new track within an upload session and returns its per-track upload URL. Call this once per file (including any additional files after an optional nested track on session create). No authentication required — the session ID acts as the credential.

Parameters

Name	Type	Required	Description
`upload_session_id`	uuid	Required	The ID of the upload session (path parameter)
`file_name`	string	Required	Original filename of the track
`organization_index`	string	Optional	Organization index
`metadata`	object	Optional	Additional metadata

Example Request

curl -X POST "https://api.audiodelivery.net/v1/upload/SESSION_ID/track" \
  -H "Content-Type: application/json" \
  -d '{
  "file_name": "track-1.mp3"
}'

const payload = {
  "file_name": "track-1.mp3"
};

const response = await fetch('https://api.audiodelivery.net/v1/upload/SESSION_ID/track', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload)
});

const data = await response.json();

import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/upload/SESSION_ID/track")!)
    request.httpMethod = "POST"
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    let bodyJSON = """
{
  "file_name": "track-1.mp3"
}
"""
    request.httpBody = bodyJSON.data(using: .utf8)
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val body = """{
  "file_name": "track-1.mp3"
}""".toRequestBody("application/json".toMediaType())
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/upload/SESSION_ID/track")
        .post(body)
        .addHeader("Content-Type", "application/json")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.post(
    Uri.parse("https://api.audiodelivery.net/v1/upload/SESSION_ID/track"),
    headers: {
      "Content-Type": "application/json",
    },
    body: jsonEncode({
  "file_name": "track-1.mp3"
}),
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}

Response

{
"ok": true,
"api_request_id": "uuid",
"upload_session_id": "uuid",
"track_id": "uuid",
"track": {
  "id": "uuid",
  "index": "string",
  "path": "string",
  "upload_url": "string"
},
"upload_session": {
  "id": "uuid",
  "creator_id": "uuid | null",
  "collection_id": "uuid",
  "organization_index": "string | null",
  "metadata": {},
  "expires_at": "string"
},
"track_upload": {
  "method": "PUT",
  "upload_url": "string",
  "ttl": 0,
  "expires_at": "string"
},
"track_cover_upload": {
  "method": "POST",
  "upload_url": "string",
  "ttl": 0,
  "expires_at": "string"
}
}

Upload Sessions

Parameters

Example Request

Example Request

Optional nested track

Response

Response when you include track

Parameters

Example Request

Response

Parameters

Example Request

Response

Response when you include `track`