Plugging the key into tools

Everywhere: base URL https://api.brrrain.fun/v1, API key brrr_… (keep it in an environment variable or the tool's secret store), model id from GET https://api.brrrain.fun/v1/models. The examples use z-ai/glm-5.3-flash; use any listed id.

OpenAI SDK (Python)

import os
from openai import OpenAI
client = OpenAI(base_url="https://api.brrrain.fun/v1", api_key=os.environ["BRRRAIN_API_KEY"])
reply = client.chat.completions.create(model="z-ai/glm-5.3-flash", max_tokens=500,
                                       messages=[{"role": "user", "content": "Hello"}])
print(reply.choices[0].message.content)

Errors arrive as openai.APIStatusError; e.body["error"]["code"] is our code (quota_exhausted, …) and e.response.headers has Retry-After. The SDK retries 429 and 5xx by itself (twice by default), which suits rate_limited and upstream_unavailable; quota_exhausted and max_tokens_too_high are 402 and are not retried.

OpenAI SDK (JavaScript / TypeScript)

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.brrrain.fun/v1", apiKey: process.env.BRRRAIN_API_KEY });
const reply = await client.chat.completions.create({ model: "z-ai/glm-5.3-flash", max_tokens: 500,
  messages: [{ role: "user", content: "Hello" }] });

LangChain (Python)

from langchain_openai import ChatOpenAI
llm = ChatOpenAI(base_url="https://api.brrrain.fun/v1", api_key=os.environ["BRRRAIN_API_KEY"],
                 model="z-ai/glm-5.3-flash", max_tokens=500)

Vercel AI SDK (version 5)

import { createOpenAICompatible } from "@ai-sdk/openai-compatible";
import { generateText } from "ai";
const brrrain = createOpenAICompatible({ name: "brrrain", baseURL: "https://api.brrrain.fun/v1", apiKey: process.env.BRRRAIN_API_KEY });
const { text } = await generateText({ model: brrrain("z-ai/glm-5.3-flash"), maxOutputTokens: 500, prompt: "Hello" });

Editors and coding agents

Tool	Where	What to set
Continue	config.yaml → models	provider: openai, apiBase: https://api.brrrain.fun/v1, apiKey, model: <id>
Cline	Settings → API Provider → OpenAI Compatible	Base URL https://api.brrrain.fun/v1, API Key, Model ID
Aider	environment	OPENAI_API_BASE=https://api.brrrain.fun/v1, OPENAI_API_KEY=brrr_…, then aider --model openai/<id>
Cursor	Settings → Models	OpenAI API Key = the key, "Override OpenAI Base URL" = https://api.brrrain.fun/v1, add the model id as a custom model

Coding agents send long contexts many times: watch Power with a cheap model first, and give the tool its own key with a daily cap.