Audio
Speech to text
POST
/
audio
/
speech-to-text
Speech to text
curl --request POST \
--url https://api.smartlyq.com/v1/audio/speech-to-text \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"audio_url": "<string>",
"language": "<string>"
}
'import requests
url = "https://api.smartlyq.com/v1/audio/speech-to-text"
payload = {
"audio_url": "<string>",
"language": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({audio_url: '<string>', language: '<string>'})
};
fetch('https://api.smartlyq.com/v1/audio/speech-to-text', 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.smartlyq.com/v1/audio/speech-to-text",
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([
'audio_url' => '<string>',
'language' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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.smartlyq.com/v1/audio/speech-to-text"
payload := strings.NewReader("{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.smartlyq.com/v1/audio/speech-to-text")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.smartlyq.com/v1/audio/speech-to-text")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"success": true,
"data": {
"job_id": "ext_7f2c91"
},
"usage": {
"units": 1,
"cost": "0.0150",
"balance_remaining": "99.9850"
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "BAD_REQUEST",
"message": "The request body is not valid JSON.",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INVALID_API_KEY",
"message": "Missing or malformed Authorization header",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INSUFFICIENT_BALANCE",
"message": "Wallet balance is insufficient for this request",
"details": {
"required": "0.0250",
"balance": "0.0100"
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INSUFFICIENT_SCOPE",
"message": "API key lacks required scope: social:write",
"details": {
"required_scope": "social:write"
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "VALIDATION_ERROR",
"message": "Missing required fields: content, platforms.",
"details": {
"fields": [
"content",
"platforms"
]
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "RATE_LIMITED",
"message": "Rate limit exceeded. Retry after 12 seconds.",
"details": {
"retry_after": 12
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "SERVER_ERROR",
"message": "Something went wrong on our side. Retry with the same request_id - it is safe.",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}Authorizations
API key from Developer dashboard (Bearer token).
Body
application/json
Publicly accessible direct URL to the audio file (mp3, mp4, mpeg, mpga, m4a, wav, or webm). Must return raw audio bytes — Google Drive, Dropbox, OneDrive, and iCloud share links will not work as they return HTML instead of the file. The URL must be reachable without authentication.
Audio language (e.g. en, es)
⌘I
Speech to text
curl --request POST \
--url https://api.smartlyq.com/v1/audio/speech-to-text \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"audio_url": "<string>",
"language": "<string>"
}
'import requests
url = "https://api.smartlyq.com/v1/audio/speech-to-text"
payload = {
"audio_url": "<string>",
"language": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({audio_url: '<string>', language: '<string>'})
};
fetch('https://api.smartlyq.com/v1/audio/speech-to-text', 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.smartlyq.com/v1/audio/speech-to-text",
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([
'audio_url' => '<string>',
'language' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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.smartlyq.com/v1/audio/speech-to-text"
payload := strings.NewReader("{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.smartlyq.com/v1/audio/speech-to-text")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.smartlyq.com/v1/audio/speech-to-text")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"audio_url\": \"<string>\",\n \"language\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"success": true,
"data": {
"job_id": "ext_7f2c91"
},
"usage": {
"units": 1,
"cost": "0.0150",
"balance_remaining": "99.9850"
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "BAD_REQUEST",
"message": "The request body is not valid JSON.",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INVALID_API_KEY",
"message": "Missing or malformed Authorization header",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INSUFFICIENT_BALANCE",
"message": "Wallet balance is insufficient for this request",
"details": {
"required": "0.0250",
"balance": "0.0100"
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "INSUFFICIENT_SCOPE",
"message": "API key lacks required scope: social:write",
"details": {
"required_scope": "social:write"
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "VALIDATION_ERROR",
"message": "Missing required fields: content, platforms.",
"details": {
"fields": [
"content",
"platforms"
]
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "RATE_LIMITED",
"message": "Rate limit exceeded. Retry after 12 seconds.",
"details": {
"retry_after": 12
}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}{
"success": false,
"error": {
"code": "SERVER_ERROR",
"message": "Something went wrong on our side. Retry with the same request_id - it is safe.",
"details": {}
},
"meta": {
"request_id": "req_9f3a2b1c-7d4e-4a08-b2c6-5e1f8a9d0c34",
"timestamp": "2026-07-26T09:41:22Z"
}
}
