Integrations - ASCN Agent

ASCN Router works with any library that lets you set a custom OpenAI base URL and an extra X-API-KEY header.

Tools that only let you enter a URL and a key, without custom headers, send the key in Authorization. Before connecting such a tool, check that a request goes through.

LangChain

import os
from langchain_openai import ChatOpenAI

key = os.environ["ASCN_API_KEY"]
llm = ChatOpenAI(
    model="anthropic/claude-haiku-4.5",
    base_url="https://b2b.api.ascn.ai/api/ai-gateway/v1",
    api_key=key,
    default_headers={"X-API-KEY": key},
)
print(llm.invoke("Hello!").content)

import { ChatOpenAI } from "@langchain/openai";

const key = process.env.ASCN_API_KEY;
const llm = new ChatOpenAI({
  model: "anthropic/claude-haiku-4.5",
  apiKey: key,
  configuration: {
    baseURL: "https://b2b.api.ascn.ai/api/ai-gateway/v1",
    defaultHeaders: { "X-API-KEY": key },
  },
});
console.log((await llm.invoke("Hello!")).content);

Vercel AI SDK

import { createOpenAICompatible } from "@ai-sdk/openai-compatible";
import { generateText } from "ai";

const ascn = createOpenAICompatible({
  name: "ascn",
  baseURL: "https://b2b.api.ascn.ai/api/ai-gateway/v1",
  headers: { "X-API-KEY": process.env.ASCN_API_KEY },
});

const { text } = await generateText({
  model: ascn("openai/gpt-4o-mini"),
  prompt: "Hello!",
});

LlamaIndex

import os
from llama_index.llms.openai_like import OpenAILike

key = os.environ["ASCN_API_KEY"]
llm = OpenAILike(
    model="deepseek/deepseek-v4-flash",
    api_base="https://b2b.api.ascn.ai/api/ai-gateway/v1",
    api_key=key,
    default_headers={"X-API-KEY": key},
    is_chat_model=True,
)
print(llm.complete("Hello!"))

Plain HTTP request

In no-code tools (n8n, Make, Zapier), use a regular HTTP node:

Method: POST
URL: https://b2b.api.ascn.ai/api/ai-gateway/v1/chat/completions
Headers: X-API-KEY: <key>, Content-Type: application/json
Body: {"model": "openai/gpt-4o-mini", "messages": [{"role": "user", "content": "Hello!"}]}

The model’s answer is in choices[0].message.content.