--- name: klingai-webhook-config description: 'Configure webhook callbacks for Kling AI task completion. Use when building event-driven pipelines or replacing polling. Trigger with phrases like ''klingai webhook'', ''kling ai callback'', ''klingai notifications'', ''video completion webhook''. ' allowed-tools: Read, Write, Edit, Bash(npm:*), Grep version: 1.18.0 license: MIT author: Jeremy Longshore tags: - saas - kling-ai - webhooks - callbacks compatibility: Designed for Claude Code --- # Kling AI Webhook Configuration ## Overview Instead of polling task status, pass a `callback_url` when creating a task. Kling AI will POST the completed task result to your URL when generation finishes. This eliminates polling overhead and reduces API calls. **Supported on:** All video generation endpoints (`text2video`, `image2video`, `video-extend`, `lip-sync`, `effects`) ## How It Works 1. Include `callback_url` in your task creation request 2. Kling queues the task normally 3. When task reaches terminal state (`succeed` or `failed`), Kling POSTs the full result to your URL 4. Your webhook handler processes the result ## Sending a Task with Callback ```python import jwt, time, os, requests BASE = "https://api.klingai.com/v1" def get_headers(): ak, sk = os.environ["KLING_ACCESS_KEY"], os.environ["KLING_SECRET_KEY"] token = jwt.encode( {"iss": ak, "exp": int(time.time()) + 1800, "nbf": int(time.time()) - 5}, sk, algorithm="HS256", headers={"alg": "HS256", "typ": "JWT"} ) return {"Authorization": f"Bearer {token}", "Content-Type": "application/json"} # Create task with callback response = requests.post(f"{BASE}/videos/text2video", headers=get_headers(), json={ "model_name": "kling-v2-master", "prompt": "A futuristic city skyline at night with neon lights", "duration": "5", "mode": "standard", "callback_url": "https://your-app.com/webhooks/kling", # your endpoint }) task_id = response.json()["data"]["task_id"] print(f"Task {task_id} submitted with callback -- no polling needed") ``` ## Webhook Receiver (Flask) ```python from flask import Flask, request, jsonify import hmac import hashlib import json app = Flask(__name__) @app.route("/webhooks/kling", methods=["POST"]) def kling_webhook(): payload = request.get_json() task_id = payload["data"]["task_id"] status = payload["data"]["task_status"] if status == "succeed": video_url = payload["data"]["task_result"]["videos"][0]["url"] print(f"Task {task_id} complete: {video_url}") # Download video, store to S3, notify user, etc. process_completed_video(task_id, video_url) elif status == "failed": error = payload["data"].get("task_status_msg", "Unknown error") print(f"Task {task_id} failed: {error}") handle_failure(task_id, error) return jsonify({"received": True}), 200 ``` ## Webhook Receiver (Express.js) ```javascript import express from "express"; const app = express(); app.use(express.json()); app.post("/webhooks/kling", (req, res) => { const { data } = req.body; const { task_id, task_status } = data; if (task_status === "succeed") { const videoUrl = data.task_result.videos[0].url; console.log(`Task ${task_id} complete: ${videoUrl}`); processVideo(task_id, videoUrl); } else if (task_status === "failed") { console.error(`Task ${task_id} failed: ${data.task_status_msg}`); } res.json({ received: true }); }); app.listen(3000); ``` ## Callback Payload Shape ```json { "code": 0, "message": "success", "data": { "task_id": "abc123...", "task_status": "succeed", "task_status_msg": "", "task_result": { "videos": [{ "id": "vid_001", "url": "https://cdn.klingai.com/...", "duration": "5.0" }] } } } ``` ## Webhook Reliability Pattern ```python import time from collections import defaultdict class WebhookManager: """Track webhook delivery and fall back to polling on failure.""" def __init__(self, poll_fallback_sec: int = 300): self.pending = {} # task_id -> submission_time self.poll_fallback_sec = poll_fallback_sec def register(self, task_id: str): self.pending[task_id] = time.time() def mark_received(self, task_id: str): self.pending.pop(task_id, None) def get_stale_tasks(self) -> list: """Tasks that haven't received a callback within threshold.""" now = time.time() return [tid for tid, submitted in self.pending.items() if now - submitted > self.poll_fallback_sec] def fallback_poll(self, client): """Poll stale tasks that missed their callback.""" for task_id in self.get_stale_tasks(): try: result = client._get(f"/videos/text2video/{task_id}") status = result["data"]["task_status"] if status in ("succeed", "failed"): self.mark_received(task_id) return result except Exception: pass ``` ## Requirements for Your Webhook Endpoint | Requirement | Detail | |------------|--------| | Protocol | HTTPS only | | Response | Return `2xx` within 5 seconds | | Availability | Must be publicly reachable | | Idempotency | Handle duplicate deliveries gracefully | | Timeout | Kling retries on timeout, so process async | ## Prerequisites - An allowlisted HTTPS endpoint, secret references for signature verification, sandbox event fixture, idempotency store, redaction policy, retention window, and incident owner. ## Instructions 1. Register only a sandbox callback during testing and validate signatures before parsing or queueing an event. 2. Enforce idempotency, schema validation, least-privilege downstream routing, redacted logging, and draft-only handling for generated assets. 3. Reject, quarantine, and alert on unsigned, malformed, duplicate, unapproved-destination, policy, or retention-drift events; do not retry unsafe payloads. 4. Promote a callback route only after owner approval; retain aggregate redacted evidence and delete test events at the approved boundary. ## Output Produce a webhook receipt with endpoint classification, event correlation ID, signature/schema/idempotency results, downstream destination, draft-only and policy checks, alert owner, retention/deletion proof, and rollback reference. Exclude payloads, prompts, asset URLs, and secrets. ## Error Handling | Condition | Response | |---|---| | Signature or schema validation fails | Return a safe failure response, quarantine redacted metadata, and do not forward the event. | | Duplicate, policy, or destination violation | Deduplicate or reject the event, remove temporary artifacts, and notify the owner. | ## Examples `endpoint=sandbox-allowlisted; event=opaque-42; signature=pass; schema=pass; idempotency=pass; destination=draft-only; cleanup=verified` is valid canary evidence. ## Resources - [API Reference](https://app.klingai.com/global/dev/document-api/apiReference/model/textToVideo) - [Developer Portal](https://app.klingai.com/global/dev) --- Source attribution: jeremylongshore Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/saas-packs/klingai-pack/skills/klingai-webhook-config/SKILL.md License: MIT License information: https://opensource.org/license/mit Original upstream instructions; downloaded from Mega AI Hub. ## Upstream license notice MIT License Copyright (c) 2026 Intent Solutions Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Mega AI Hub resource metadata Creator / publisher: jeremylongshore Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/saas-packs/klingai-pack/skills/klingai-webhook-config/SKILL.md Attribution basis: Source repository record Fields of work: Content & Media, Development & Engineering, Marketing Roles: Backend Developer, DevOps / SRE, Growth Marketer, Product Marketer, Video Producer Specialties: API, Backend, Design, Word Documents, Frontend, Remotion Tools: Kling Ai Country applicability: Country not specified Classification basis: Source catalog labels Instruction SHA-256: e944b9d0cc746f5aeb1ad1eca275a2ea673f039e07ead93f15efdf5cbad26dd5