API Reference

Kling Text to Video

POST https://api.tu-zi.com/kling/v1/videos/text2video

Preview guide

Paste into an AI assistant to help with integration. Documentation and examples only; no real credentials.

# Kling Text to Video

Kling Text to Video

## Endpoint and authentication

`POST https://api.tu-zi.com/kling/v1/videos/text2video`

Transport: json

Use an inference API key. Examples contain placeholders; read credentials from environment variables.

```http
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
```

## Body parameters

| Field | Type | Required | Description / constraints |
| --- | --- | --- | --- |
| model_name | string | No | Provider model version; use the model identifier configured by this gateway. |
| prompt | string | Yes | Generation prompt. |
| negative_prompt | string | No | Content to exclude from the output. |
| aspect_ratio | string | No | Output aspect ratio. Form initial value (not an upstream default): "16:9" Values: "16:9", "9:16", "1:1" |
| mode | string | No | Generation mode. Form initial value (not an upstream default): "std" Values: "std", "pro" |
| duration | string | No | Video duration in seconds. Form initial value (not an upstream default): "5" Values: "5", "10" |
| cfg_scale | number | No | Prompt adherence strength. Form initial value (not an upstream default): 0.5 Range in this definition: 0 ~ 1 |

## Minimal request example

```json
{
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}
```

## Before running

Replace https://api.tu-zi.com with this site origin (do not append /v1 twice), and YOUR_MODEL with the exact marketplace model ID. Install requests for Python; use Node.js 20+ and save JavaScript as .mjs. WebSocket samples list their own dependencies.

Create an inference key on the site and set API_KEY in the environment; replace YOUR_API_KEY in cURL. Prepare local input.png/input.wav files for upload examples.

Start with a minimal request, then read the result using the response fields below. For async APIs, a returned task ID requires polling; acceptance does not mean generation has finished.

## Code examples

### curl

```bash
curl --request POST 'https://api.tu-zi.com/kling/v1/videos/text2video' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}'
```

### python

```python
import json
import os
import requests

url = "https://api.tu-zi.com/kling/v1/videos/text2video"
headers = json.loads("{\"Authorization\":\"Bearer YOUR_API_KEY\",\"Content-Type\":\"application/json\"}")
headers["Authorization"] = "Bearer " + os.environ["API_KEY"]
payload = json.loads("{\"model_name\":\"YOUR_MODEL\",\"prompt\":\"A valley at sunrise\"}")
response = requests.request("POST", url, headers=headers, json=payload, timeout=120)
response.raise_for_status()
result = response.json()
if isinstance(result, dict) and (result.get("success") is False or result.get("error")):
    raise RuntimeError(json.dumps(result, ensure_ascii=False))
print(result)  # Also inspect protocol-specific status/code fields.
```

### javascript

```javascript
// Node.js 20+
const url = "https://api.tu-zi.com/kling/v1/videos/text2video";
const headers = {
  "Authorization": "Bearer YOUR_API_KEY",
  "Content-Type": "application/json"
};
headers.Authorization = 'Bearer ' + process.env.API_KEY;
const response = await fetch(url, { method: "POST", headers, body: JSON.stringify({
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}) });
if (!response.ok) throw new Error(await response.text());
const result = await response.json();
if (result?.success === false || result?.error) throw new Error(JSON.stringify(result));
console.log(result); // Also inspect protocol-specific status/code fields.
```

## Response fields

| Field | Type | Description / constraints |
| --- | --- | --- |
| id / task_id | string | Public gateway task ID for polling, not request_id. |

Illustrative response; some endpoints show essential fields only. Optional fields may be absent.

```json
{
  "id": "task_example",
  "task_id": "task_example"
}
```

## Asynchronous workflow

Save id or task_id and GET /kling/v1/videos/text2video/{task_id} with the same key. Read data.status: SUBMITTED, QUEUED, IN_PROGRESS, SUCCESS or FAILURE. The last two are terminal. Retrieve media from result_url or result data; do not use the direct Kling lowercase status contract.

## Errors and retries

Check HTTP status and protocol-specific errors; do not mix error formats across protocols. For 401/403 check credentials and permissions, for 429 back off, and for 5xx check gateway/upstream status. Error bodies may contain error/message/code depending on the protocol.

Use bounded exponential backoff for reads. Do not blindly retry task creation, generation, or key mutations, to avoid duplicate billing or execution.

## Constraints

This page describes the base protocol. Use the selected model quick start for supported fields, enums, limits and asynchronous behavior. Replace YOUR_MODEL. Form initial values are not upstream defaults.

## Documentation source

Definition version: 1

Reviewed: 2026-11-02

Source: https://api.tu-zi.com/en/docs/api/reference-relay-kling-video-text

Related protocol guide: https://api.tu-zi.com/docs/api/kling

This export contains documentation and examples only, without real credentials, account data or user requests.

Updated 2026-11-02 · Reviewed 2026-11-02

Endpoint and authentication

POST https://api.tu-zi.com/kling/v1/videos/text2video

Transport: json

Use an inference API key. Examples contain placeholders; read credentials from environment variables.

Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

Minimal request example

{
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}

Before running

Replace https://api.tu-zi.com with this site origin (do not append /v1 twice), and YOUR_MODEL with the exact marketplace model ID. Install requests for Python; use Node.js 20+ and save JavaScript as .mjs. WebSocket samples list their own dependencies.

Create an inference key on the site and set API_KEY in the environment; replace YOUR_API_KEY in cURL. Prepare local input.png/input.wav files for upload examples.

Start with a minimal request, then read the result using the response fields below. For async APIs, a returned task ID requires polling; acceptance does not mean generation has finished.

Constraints

This page describes the base protocol. Use the selected model quick start for supported fields, enums, limits and asynchronous behavior. Replace YOUR_MODEL. Form initial values are not upstream defaults.

Body parameters

Field	Type	Required	Description / constraints
model_name	string	No	Provider model version; use the model identifier configured by this gateway.
prompt	string	Yes	Generation prompt.
negative_prompt	string	No	Content to exclude from the output.
aspect_ratio	string	No	Output aspect ratio. Form initial value (not an upstream default): "16:9" Values: "16:9", "9:16", "1:1"
mode	string	No	Generation mode. Form initial value (not an upstream default): "std" Values: "std", "pro"
duration	string	No	Video duration in seconds. Form initial value (not an upstream default): "5" Values: "5", "10"
cfg_scale	number	No	Prompt adherence strength. Form initial value (not an upstream default): 0.5 Range in this definition: 0 ~ 1

Response fields

Field	Type	Description / constraints
id / task_id	string	Public gateway task ID for polling, not request_id.

Illustrative response; some endpoints show essential fields only. Optional fields may be absent.

{
  "id": "task_example",
  "task_id": "task_example"
}

Asynchronous workflow

Save id or task_id and GET /kling/v1/videos/text2video/{task_id} with the same key. Read data.status: SUBMITTED, QUEUED, IN_PROGRESS, SUCCESS or FAILURE. The last two are terminal. Retrieve media from result_url or result data; do not use the direct Kling lowercase status contract.

Errors and retries

Check HTTP status and protocol-specific errors; do not mix error formats across protocols. For 401/403 check credentials and permissions, for 429 back off, and for 5xx check gateway/upstream status. Error bodies may contain error/message/code depending on the protocol.

Use bounded exponential backoff for reads. Do not blindly retry task creation, generation, or key mutations, to avoid duplicate billing or execution.

Document information and sources

Documentation source

Definition version: 1

Reviewed: 2026-11-02

Source: https://api.tu-zi.com/en/docs/api/reference-relay-kling-video-text

Related protocol guide: https://api.tu-zi.com/docs/api/kling

This export contains documentation and examples only, without real credentials, account data or user requests.

Request examples

curl --request POST 'https://api.tu-zi.com/kling/v1/videos/text2video' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}'

import json
import os
import requests

url = "https://api.tu-zi.com/kling/v1/videos/text2video"
headers = json.loads("{\"Authorization\":\"Bearer YOUR_API_KEY\",\"Content-Type\":\"application/json\"}")
headers["Authorization"] = "Bearer " + os.environ["API_KEY"]
payload = json.loads("{\"model_name\":\"YOUR_MODEL\",\"prompt\":\"A valley at sunrise\"}")
response = requests.request("POST", url, headers=headers, json=payload, timeout=120)
response.raise_for_status()
result = response.json()
if isinstance(result, dict) and (result.get("success") is False or result.get("error")):
    raise RuntimeError(json.dumps(result, ensure_ascii=False))
print(result)  # Also inspect protocol-specific status/code fields.

// Node.js 20+
const url = "https://api.tu-zi.com/kling/v1/videos/text2video";
const headers = {
  "Authorization": "Bearer YOUR_API_KEY",
  "Content-Type": "application/json"
};
headers.Authorization = 'Bearer ' + process.env.API_KEY;
const response = await fetch(url, { method: "POST", headers, body: JSON.stringify({
  "model_name": "YOUR_MODEL",
  "prompt": "A valley at sunrise"
}) });
if (!response.ok) throw new Error(await response.text());
const result = await response.json();
if (result?.success === false || result?.error) throw new Error(JSON.stringify(result));
console.log(result); // Also inspect protocol-specific status/code fields.