Introduction

Base URL, authentication, request format, and error handling for the AnyFast API.

Base URL

All API requests are made to the following base URL:

https://www.anyfast.ai

Authentication

AnyFast uses Bearer token authentication. Include your API key in the Authorization header of every request:

Authorization: Bearer YOUR_API_KEY

You can generate and manage API keys in the Console.

Keep your API key secure. Do not expose it in client-side code or public repositories.

Request format

All requests must use Content-Type: application/json. Request bodies are JSON-encoded.

curl https://www.anyfast.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-3-5-sonnet-20241022",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Supported endpoints

Endpoint	Description
POST /v1/chat/completions	Chat completion (OpenAI-compatible)
POST /v1/images/generations	Image generation (ByteDance Seedream)
POST /v1/video/generations	Video generation (ByteDance Seedance)
GET /v1/video/generations/{id}	Query video generation task status
POST /kling/v1/videos/text2video	Kling text-to-video
POST /kling/v1/videos/image2video	Kling image-to-video
POST /kling/v1/videos/multi-image2video	Kling multi-image-to-video
GET /kling/v1/videos/{id}	Query Kling task status

Response format

All responses are JSON-encoded. A successful response typically includes:

{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "model": "claude-3-5-sonnet-20241022",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello! How can I help you today?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 10,
    "completion_tokens": 12,
    "total_tokens": 22
  }
}

Error handling

When an error occurs, the API returns a JSON response with an error object:

{
  "error": {
    "message": "Invalid API key provided.",
    "type": "authentication_error",
    "code": "invalid_api_key"
  }
}

HTTP status codes

Status	Description
200	Success
400	Bad request — invalid parameters
401	Unauthorized — invalid or missing API key
403	Forbidden — insufficient permissions
404	Not found — invalid endpoint
429	Rate limit exceeded — too many requests
500	Internal server error

Rate limits

Rate limits vary by model and subscription tier. If you hit a rate limit, the API returns a 429 status code. Implement exponential backoff to handle rate limiting gracefully.

OpenAI SDK compatibility

AnyFast is compatible with the OpenAI SDK. Simply change the base_url to use AnyFast:

Python

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://www.anyfast.ai/v1"
)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "YOUR_API_KEY",
  baseURL: "https://www.anyfast.ai/v1",
});