AIMovieToolkit

How AI video tools plug into a pipeline

Which AI video APIs send a webhook when a job is done?

Of the 28, 16 document a webhook or callback URL, among them Kling AI, Luma, OpenAI for Sora, BytePlus for Seedance, fal, Replicate, HeyGen and PixVerse. Kling AI signs its callback requests, and Luma's callback carries the video itself. From 16 source pages, read 2026-09-25 to 2026-10-25; no maker pays to be listed.

Documented, and not16 tools document an answer; the remaining tools in the register do not.AnswersDocumented16 toolsNot documented12 toolsRegisterNine hooks per tool
Fig. 1 Tally taken from this register on the day it was read.
Tools whose documentation answers this, read 2026-09-25.
ToolHookWhat the documentation says
BytePlus ModelArkWebhooksA callback URL set when the video task is created
ColossyanWebhooksNotification through a callback when a video is ready
DescriptWebhooksA job status to poll, or a callback URL that receives the result
falWebhooksQueued requests that are polled or answered by webhook
FlixlyWebhooksWebhooks covered in its full API reference
HeyGenWebhooksBatch APIs of up to 100 requests per call, with webhooks
HiggsfieldWebhooksRequests polled for a result or answered by a webhook
Kling AIWebhooksA callback URL notified when a task's status changes, with signed requests
KreaWebhooksWebhooks that report when async jobs complete
LumaWebhooksA callback URL that receives status updates and the video
OpenAI SoraWebhooksWebhooks that report when a video job finishes, as an alternative to polling
PixVerseWebhooksA webhook that reports each change in a task's status
ReplicateWebhooksWebhooks that deliver a finished prediction's metadata and output
RevidWebhooksA webhook URL called when the render is ready, or a status endpoint to poll
SynthesiaWebhooksWebhook endpoints in its API reference, beside polling a video's status
VEEDWebhooksWebhooks that notify an application when processing completes

Inclusion rule. A tool is listed when its own documentation states what the question asks. Order. Tools in alphabetical order.

A webhook turns waiting into an event: the tool calls the caller's server when a video is ready, instead of the caller asking over and over.

Several pages offer both. fal and Higgsfield let a request be polled or answered by webhook, and Descript's API jobs can be polled or sent to a callback URL.

A webhook endpoint has to be public and has to check that a call really came from the tool; Kling AI's documentation covers verifying the signature.

1In the documentation's words

BytePlus ModelArk

Callback URL

BytePlus ModelArk, API reference

Colossyan

Get notified immediately via a callback mechanism

Colossyan, API documentation

Descript

or pass a callback_url and Descript will POST the same payload when the job finishes

Descript, help centre: Descript API

fal

poll for status or receive results via webhook

fal, documentation: Model APIs

Flixly

Endpoints, parameters, webhooks and error codes.

Flixly, API page

HeyGen

Batch APIs — up to 100 requests per call, webhooks included

HeyGen, developer site

Higgsfield

poll for the result or receive a webhook when processing finishes

Higgsfield, API documentation

Kling AI

the server will actively notify you when the task status changes

Kling AI, API documentation: callback protocol

Krea

Get notified when jobs complete

Krea, API reference: introduction

Luma

It will get status updates (dreaming/completed/failed)

Luma, API documentation: Python video generation

OpenAI Sora

use webhooks (see the webhooks section below) to be notified automatically when the job finishes

OpenAI, video generation guide

PixVerse

PixVerse can send task-status updates to your callback URL whenever the status of a video-generation task changes.

PixVerse, platform documentation: webhook callbacks

Replicate

Sending notifications when long-running predictions finish.

Replicate, documentation: webhooks

Revid

your webhookUrl is called when the video is ready, or poll the status endpoint

Revid, API documentation

Synthesia

Create a Webhook

Synthesia, developer documentation: video API quickstart

VEED

Webhooks can notify your application when video processing is complete.

VEED, API page

Finished-job signal for every tool · Which AI video tools say anything about subtitles? · Which AI video APIs have to be polled?

2One tool in the same pipeline

Read against “Which AI video APIs send a webhook when a job is done?”, this is how SceneMixer describes the matching stage of its own pipeline:

SceneMixer turns a novel into a watchable short-drama series in one pipeline: upload the novel (Chinese or English) → AI extracts characters, scenes, and an episode-by-episode structure → generates consistent character and scene art → writes storyboard scripts → renders video segment by segment (16:9 by default, 9:16 in one setting) → composites full episodes.

SceneMixer, Turn a Novel into a Video Series with AI (read 2026-10-13)

SceneMixer generates each character once as a full-body reference sheet — 9:16, plain background, directional key light, identity features written before any technical instruction — and then attaches crops of that sheet to every shot the character appears in.

SceneMixer, AI Character Sheet Generator (read 2026-10-13)