Kling AI Debug Bundle
Overview
Structured logging, request tracing, and diagnostic tools for Kling AI API integrations. Captures request/response pairs, task lifecycle events, and timing metrics for every call to https://api.klingai.com/v1.
Debug-Enabled Client
import jwt, time, os, requests, logging, json
from datetime import datetime
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s [%(levelname)s] %(name)s: %(message)s"
)
logger = logging.getLogger("kling.debug")
class KlingDebugClient:
"""Kling AI client with full request/response logging."""
BASE = "https://api.klingai.com/v1"
def __init__(self):
self.ak = os.environ["KLING_ACCESS_KEY"]
self.sk = os.environ["KLING_SECRET_KEY"]
self._request_log = []
def _get_headers(self):
token = jwt.encode(
{"iss": self.ak, "exp": int(time.time()) + 1800, "nbf": int(time.time()) - 5},
self.sk, algorithm="HS256", headers={"alg": "HS256", "typ": "JWT"}
)
return {"Authorization": f"Bearer {token}", "Content-Type": "application/json"}
def _traced_request(self, method, path, body=None):
"""Execute request with full tracing."""
url = f"{self.BASE}{path}"
start = time.monotonic()
trace = {
"timestamp": datetime.utcnow().isoformat(),
"method": method,
"path": path,
"request_body": body,
}
try:
if method == "POST":
r = requests.post(url, headers=self._get_headers(), json=body, timeout=30)
else:
r = requests.get(url, headers=self._get_headers(), timeout=30)
trace["status_code"] = r.status_code
trace["response_body"] = r.json() if r.content else None
trace["duration_ms"] = round((time.monotonic() - start) * 1000)
logger.debug(f"{method} {path} -> {r.status_code} ({trace['duration_ms']}ms)")
if r.status_code >= 400:
logger.error(f"API error: {r.status_code} -- {r.text[:300]}")
r.raise_for_status()
return r.json()
except Exception as e:
trace["error"] = str(e)
trace["duration_ms"] = round((time.monotonic() - start) * 1000)
logger.exception(f"Request failed: {path}")
raise
finally:
self._request_log.append(trace)
def text_to_video(self, prompt, **kwargs):
body = {
"model_name": kwargs.get("model", "kling-v2-master"),
"prompt": prompt,
"duration": str(kwargs.get("duration", 5)),
"mode": kwargs.get("mode", "standard"),
}
result = self._traced_request("POST", "/videos/text2video", body)
task_id = result["data"]["task_id"]
logger.info(f"Task created: {task_id}")
return self._poll_with_logging("/videos/text2video", task_id)
def _poll_with_logging(self, endpoint, task_id, max_attempts=120):
start = time.monotonic()
for attempt in range(max_attempts):
time.sleep(10)
result = self._traced_request("GET", f"{endpoint}/{task_id}")
status = result["data"]["task_status"]
elapsed = round(time.monotonic() - start)
logger.info(f"Poll #{attempt + 1}: status={status}, elapsed={elapsed}s")
if status == "succeed":
logger.info(f"Task {task_id} completed in {elapsed}s")
return result["data"]["task_result"]
elif status == "failed":
msg = result["data"].get("task_status_msg", "Unknown")
logger.error(f"Task {task_id} failed after {elapsed}s: {msg}")
raise RuntimeError(msg)
raise TimeoutError(f"Task {task_id} timed out after {max_attempts * 10}s")
def dump_log(self, filepath="kling_debug.json"):
with open(filepath, "w") as f:
json.dump(self._request_log, f, indent=2, default=str)
logger.info(f"Debug log written to {filepath} ({len(self._request_log)} entries)")
Usage
client = KlingDebugClient()
try:
result = client.text_to_video("A cat surfing ocean waves at sunset")
print(f"Video: {result['videos'][0]['url']}")
except Exception:
pass
finally:
client.dump_log() # always save debug log
Structured Log Entry Format
{
"timestamp": "2026-03-22T10:30:00.000Z",
"method": "POST",
"path": "/videos/text2video",
"request_body": {"model_name": "kling-v2-master", "prompt": "..."},
"status_code": 200,
"response_body": {"code": 0, "data": {"task_id": "abc123"}},
"duration_ms": 342
}
Quick Diagnostic Script
#!/bin/bash
# kling-diag.sh
echo "=== Kling AI Diagnostics ==="
echo "KLING_ACCESS_KEY: ${KLING_ACCESS_KEY:+set (${#KLING_ACCESS_KEY} chars)}"
echo "KLING_SECRET_KEY: ${KLING_SECRET_KEY:+set (${#KLING_SECRET_KEY} chars)}"
python3 -c "
import jwt, time, os, requests
ak = os.environ.get('KLING_ACCESS_KEY', '')
sk = os.environ.get('KLING_SECRET_KEY', '')
if not ak or not sk: print('ERROR: Missing credentials'); exit(1)
token = jwt.encode({'iss': ak, 'exp': int(time.time())+1800, 'nbf': int(time.time())-5},
sk, algorithm='HS256', headers={'alg':'HS256','typ':'JWT'})
r = requests.get('https://api.klingai.com/v1/videos/text2video',
headers={'Authorization': f'Bearer {token}'}, timeout=10)
print(f'Auth test: HTTP {r.status_code}')
if r.status_code == 401: print('Fix: Check AK/SK values')
elif r.status_code in (200, 400): print('Auth OK')
"
Task Inspector
def inspect_task(client, endpoint, task_id):
"""Print detailed task information."""
result = client._traced_request("GET", f"{endpoint}/{task_id}")
data = result["data"]
print(f"Task ID: {data['task_id']}")
print(f"Status: {data['task_status']}")
print(f"Created: {data.get('created_at', 'N/A')}")
if data["task_status"] == "succeed":
for i, video in enumerate(data["task_result"]["videos"]):
print(f"Video [{i}]: {video['url']}")
elif data["task_status"] == "failed":
print(f"Error: {data.get('task_status_msg', 'No message')}")