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')}")

Prerequisites

• A non-production or approved staging account, a bounded diagnostic budget, and synthetic or rights-cleared media for reproduction. Do not debug with customer images or identifiable people unless the incident owner has documented consent.
• A secret manager for Kling credentials and a redaction policy covering JWTs, access keys, source URLs, prompts, masks, output URLs, and provider response bodies.
• A private, access-controlled log sink with a short retention period, plus an owner-approved canary and rollback procedure before any replay or regeneration.

Instructions

1. Reproduce only with a synthetic or rights-cleared fixture in staging, and assign a correlation ID before making a request.
2. Apply redaction to request bodies, response bodies, exception text, headers, URLs, prompts, and generated-media references before logging or exporting a bundle.
3. Use bounded polling and retry budgets. Do not replay a policy rejection, exceed the approved credit budget, or replay a request against an unapproved destination.
4. Keep diagnostic output private and watermarked until the incident owner approves it. Quarantine generated media, remove temporary links, and restore the prior approved artifact if a replay changes state.
5. Verify log deletion at the retention deadline and retain only the aggregate, redacted receipt needed for incident follow-up.

Output

Produce a redacted diagnostic bundle containing a correlation ID, endpoint path, HTTP status, latency, retry count, opaque task ID, policy result, budget result, and a hash of relevant fixtures. Include a scrubbed error class and rollback reference; never include credentials, bearer tokens, source or CDN URLs, prompts, faces, contact data, or raw request/response bodies.

Error Handling

Classify failures as authentication, validation, policy, quota/budget, transport, provider-task, or storage failures. Redact before persisting or printing any exception, cap retries with exponential backoff, and stop replay when a request is billable, policy-rejected, or outside the approved fixture scope. Quarantine generated media, revoke temporary access, delete debug artifacts at the retention deadline, and restore the last approved output when a replay changes production state. Escalate an unknown provider status with the correlation ID instead of exposing raw payloads.

Examples

Use a synthetic fixture and a private canary when collecting a receipt:

{
  "correlation_id": "trace-opaque-42",
  "fixture_sha256": "sha256:opaque",
  "task_id": "task-redacted",
  "status": "failed",
  "failure_class": "policy",
  "canary": "watermarked-private",
  "budget": "within-limit",
  "retention": "24h",
  "rollback": "release-r31"
}

Before enabling verbose tracing, verify that redaction is applied to both successful and failed paths; a diagnostic run is never permission to publish or retain generated media.

Resources

• API Reference
• Developer Console