curl --request GET \
--url https://api.tella.com/v1/library/generations/{id} \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.tella.com/v1/library/generations/{id}"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.tella.com/v1/library/generations/{id}', 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.tella.com/v1/library/generations/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.tella.com/v1/library/generations/{id}"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.tella.com/v1/library/generations/{id}")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.tella.com/v1/library/generations/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"generation": {
"id": "mi_abc123def456",
"prompt": "A watercolor illustration of a lighthouse at dawn",
"status": "completed",
"type": "image",
"error": "<string>",
"item": {
"id": "media_abc123def456",
"name": "Intro camera take",
"scope": "private",
"type": "video",
"category": "Everyday",
"createdAt": "<string>",
"dimensions": {
"height": 0,
"width": 0
},
"durationMs": 4200,
"presetId": "cha-ching",
"sourceId": "su_abc123def456",
"updatedAt": "<string>",
"url": "<string>"
}
}
}{
"docsUrl": "https://docs.tella.com/",
"error": "bad_request",
"message": "The request was malformed or contained invalid parameters."
}{
"docsUrl": "https://docs.tella.com/",
"error": "unauthorized",
"message": "Authentication is required. Provide a valid API key."
}{
"docsUrl": "https://docs.tella.com/",
"error": "forbidden",
"message": "You don't have permission to access this resource."
}{
"docsUrl": "https://docs.tella.com/",
"error": "not_found",
"message": "The requested resource was not found."
}{
"docsUrl": "https://docs.tella.com/",
"error": "conflict",
"message": "The request conflicts with the resource's current state, e.g. an Idempotency-Key whose first request is still in progress. Retry once it settles."
}{
"docsUrl": "https://docs.tella.com/",
"error": "rate_limited",
"message": "You have exceeded the rate limit. Please slow down."
}{
"docsUrl": "https://docs.tella.com/",
"error": "server_error",
"message": "An unexpected error occurred"
}{
"docsUrl": "https://docs.tella.com/",
"error": "not_implemented",
"message": "The requested operation is not implemented."
}{
"docsUrl": "https://docs.tella.com/",
"error": "unavailable",
"message": "A dependency was unavailable and the request was not executed. Safe to resend unchanged after the Retry-After delay."
}Get a generation's status
Returns the current status of a generation started with POST /v1/library/generations. Poll until status is completed (then item holds the finished library item) or failed (then error says why; start a new generation).
curl --request GET \
--url https://api.tella.com/v1/library/generations/{id} \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.tella.com/v1/library/generations/{id}"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.tella.com/v1/library/generations/{id}', 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.tella.com/v1/library/generations/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.tella.com/v1/library/generations/{id}"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.tella.com/v1/library/generations/{id}")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.tella.com/v1/library/generations/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"generation": {
"id": "mi_abc123def456",
"prompt": "A watercolor illustration of a lighthouse at dawn",
"status": "completed",
"type": "image",
"error": "<string>",
"item": {
"id": "media_abc123def456",
"name": "Intro camera take",
"scope": "private",
"type": "video",
"category": "Everyday",
"createdAt": "<string>",
"dimensions": {
"height": 0,
"width": 0
},
"durationMs": 4200,
"presetId": "cha-ching",
"sourceId": "su_abc123def456",
"updatedAt": "<string>",
"url": "<string>"
}
}
}{
"docsUrl": "https://docs.tella.com/",
"error": "bad_request",
"message": "The request was malformed or contained invalid parameters."
}{
"docsUrl": "https://docs.tella.com/",
"error": "unauthorized",
"message": "Authentication is required. Provide a valid API key."
}{
"docsUrl": "https://docs.tella.com/",
"error": "forbidden",
"message": "You don't have permission to access this resource."
}{
"docsUrl": "https://docs.tella.com/",
"error": "not_found",
"message": "The requested resource was not found."
}{
"docsUrl": "https://docs.tella.com/",
"error": "conflict",
"message": "The request conflicts with the resource's current state, e.g. an Idempotency-Key whose first request is still in progress. Retry once it settles."
}{
"docsUrl": "https://docs.tella.com/",
"error": "rate_limited",
"message": "You have exceeded the rate limit. Please slow down."
}{
"docsUrl": "https://docs.tella.com/",
"error": "server_error",
"message": "An unexpected error occurred"
}{
"docsUrl": "https://docs.tella.com/",
"error": "not_implemented",
"message": "The requested operation is not implemented."
}{
"docsUrl": "https://docs.tella.com/",
"error": "unavailable",
"message": "A dependency was unavailable and the request was not executed. Safe to resend unchanged after the Retry-After delay."
}Authorizations
API key obtained from your Tella account settings
Path Parameters
Generation ID — the generation.id returned when it was started
"mi_abc123def456"
Response
OK
The generation's current status
An AI media generation and, once finished, its library item
Hide child attributes
Hide child attributes
Generation ID. It is also the ID of the private library item the result is saved as, so it can be passed to GET /v1/library/generations/{id} to poll and shows up in GET /v1/library?scope=private once finished.
"mi_abc123def456"
The prompt the media is being generated from
"A watercolor illustration of a lighthouse at dawn"
pending and running mean the generator is still working — poll again in a few seconds. completed means item is ready to place. failed is final; start a new generation.
pending, running, completed, failed "completed"
The kind of media to generate
image, sound-effect "image"
A sanitized, human-readable reason when status is failed. It may identify a content-safety rejection or timeout, or report a generic failure. Do not parse this text for machine handling.
The finished library item, present once status is completed. Pass its sourceId anywhere a source is accepted — overlays, layout media, sound effects.
Hide child attributes
Hide child attributes
Unique library item identifier
"media_abc123def456"
Display name shown in the library
"Intro camera take"
Which set of media to read: private (only visible to their creator), workspace (shared with everyone in the workspace), or default (Tella's curated sound effect and background music catalogs, which hold no other media type)
private, workspace, default "private"
The kind of media the item holds
image, video, sound-effect, music, lut, screenshot "video"
Catalog grouping, for default items only — the same grouping the editor's sound effects and background music panels show
"Everyday"
ISO-8601 creation timestamp. Absent for default catalog items, which are served from Tella's catalog rather than stored as rows.
Duration in milliseconds, for time-based media
4200
Preset ID, for default catalog items only. A preset has no source, so pass this instead of sourceId: a sound-effect preset goes to POST /v1/videos/{id}/clips/{clipId}/sound-effects (placing it copies the effect into a source owned by your workspace), a music preset to PUT /v1/videos/{id}/background-music.
"cha-ching"
Source ID. Pass it anywhere a sourceId is accepted — clips, layouts, overlays, sound effects. Present for every item added through this API, including images. Absent for items added in the editor, which have no source, for music and LUT items, and for default catalog items, which use presetId instead.
"su_abc123def456"
ISO-8601 update timestamp. Absent for default catalog items.
Hosted media URL, for image, screenshot, music and lut items, and for default catalog items, where it is a publicly fetchable preview of the audio (for music presets it is also the track the video will play). API-created images expose this alongside sourceId; use sourceId to place the image on a clip, since overlays and layout media do not accept URLs. Editor-created screenshot items have a URL but no sourceId; use POST /v1/library/screenshots to capture a new placeable image or video.
Was this page helpful?