cURL
curl --request POST \
--url https://api.ttapi.io/flowmusic/v1/extend \
--header 'Content-Type: application/json' \
--header 'TT-API-KEY: <api-key>' \
--data '
{
"clip_id": "<string>",
"extend_from_s": 123,
"extend_s": 123,
"instruction": "<string>",
"model": "Lyria 3 Pro",
"title": "<string>",
"seed": "<string>",
"hook_url": "<string>"
}
'import requests
url = "https://api.ttapi.io/flowmusic/v1/extend"
payload = {
"clip_id": "<string>",
"extend_from_s": 123,
"extend_s": 123,
"instruction": "<string>",
"model": "Lyria 3 Pro",
"title": "<string>",
"seed": "<string>",
"hook_url": "<string>"
}
headers = {
"TT-API-KEY": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'TT-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
clip_id: '<string>',
extend_from_s: 123,
extend_s: 123,
instruction: '<string>',
model: 'Lyria 3 Pro',
title: '<string>',
seed: '<string>',
hook_url: '<string>'
})
};
fetch('https://api.ttapi.io/flowmusic/v1/extend', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.ttapi.io/flowmusic/v1/extend",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'clip_id' => '<string>',
'extend_from_s' => 123,
'extend_s' => 123,
'instruction' => '<string>',
'model' => 'Lyria 3 Pro',
'title' => '<string>',
'seed' => '<string>',
'hook_url' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"TT-API-KEY: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.ttapi.io/flowmusic/v1/extend"
payload := strings.NewReader("{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("TT-API-KEY", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.ttapi.io/flowmusic/v1/extend")
.header("TT-API-KEY", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.ttapi.io/flowmusic/v1/extend")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["TT-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"status": "SUCCESS",
"message": "success",
"data": {
"jobId": "jobId"
}
}{
"status": "FAILED",
"message": "\"prompt\" cannot be empty.",
"data": {}
}{
"status": "FAILED",
"message": "Wrong TT-API-KEY or email is not activated."
}Flowmusic
Music Extension
Extend the generated audio, Note: This endpoint can only be used after the previous task completes successfully
POST
/
flowmusic
/
v1
/
extend
cURL
curl --request POST \
--url https://api.ttapi.io/flowmusic/v1/extend \
--header 'Content-Type: application/json' \
--header 'TT-API-KEY: <api-key>' \
--data '
{
"clip_id": "<string>",
"extend_from_s": 123,
"extend_s": 123,
"instruction": "<string>",
"model": "Lyria 3 Pro",
"title": "<string>",
"seed": "<string>",
"hook_url": "<string>"
}
'import requests
url = "https://api.ttapi.io/flowmusic/v1/extend"
payload = {
"clip_id": "<string>",
"extend_from_s": 123,
"extend_s": 123,
"instruction": "<string>",
"model": "Lyria 3 Pro",
"title": "<string>",
"seed": "<string>",
"hook_url": "<string>"
}
headers = {
"TT-API-KEY": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'TT-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
clip_id: '<string>',
extend_from_s: 123,
extend_s: 123,
instruction: '<string>',
model: 'Lyria 3 Pro',
title: '<string>',
seed: '<string>',
hook_url: '<string>'
})
};
fetch('https://api.ttapi.io/flowmusic/v1/extend', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.ttapi.io/flowmusic/v1/extend",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'clip_id' => '<string>',
'extend_from_s' => 123,
'extend_s' => 123,
'instruction' => '<string>',
'model' => 'Lyria 3 Pro',
'title' => '<string>',
'seed' => '<string>',
'hook_url' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"TT-API-KEY: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.ttapi.io/flowmusic/v1/extend"
payload := strings.NewReader("{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("TT-API-KEY", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.ttapi.io/flowmusic/v1/extend")
.header("TT-API-KEY", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.ttapi.io/flowmusic/v1/extend")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["TT-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"clip_id\": \"<string>\",\n \"extend_from_s\": 123,\n \"extend_s\": 123,\n \"instruction\": \"<string>\",\n \"model\": \"Lyria 3 Pro\",\n \"title\": \"<string>\",\n \"seed\": \"<string>\",\n \"hook_url\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"status": "SUCCESS",
"message": "success",
"data": {
"jobId": "jobId"
}
}{
"status": "FAILED",
"message": "\"prompt\" cannot be empty.",
"data": {}
}{
"status": "FAILED",
"message": "Wrong TT-API-KEY or email is not activated."
}Authorizations
Please visit TTAPI Dashboard to obtain your API key.
Body
application/json
Source music clip_id
From which time point to extend the source clip, in seconds; cannot exceed source clip duration.
Extension duration in seconds; maximum 164 seconds.
Required range:
x <= 164Edit instruction for extending music.
Music model name, defaults to Lyria 3 Pro when empty
Title after extension.
Random seed; used to reproduce or control generation results.
Business callback URL after task completion; no callback push when empty
Last modified on April 25, 2026
โI