iceProxy

OpenAI-compatible API for 7 free AI models in one endpoint
_{Qwen3-Max · GLM-5.3 · DeepSeek-V4 · GPT-OSS-120B · Llama-4 · Kimi-K3}

OpenAI-compatible API for 5 free AI models · Cloudflare Workers · 0 cold start

iceProxy is a single-file Cloudflare Worker that exposes free-tier AI models as an OpenAI-compatible API. It supports multi-account rotation for the Qwen free tier (2000 req/day × N accounts) and fallback across providers for high availability.

Features

• ✅ OpenAI-compatible API — drop-in replacement for https://api.openai.com/v1
• ✅ 5 free providers with 8+ models:

  Provider	Models	Free Tier	Auth
  Qwen	qwen3-coder-plus, qwen3-coder-flash, vision-model	2000 req/day	OAuth (QR)
  Gemini	gemini-2.0-flash, gemini-1.5-flash	1500 req/day	API Key
  GLM (智谱)	glm-4.5-flash	Generous free	API Key
  Cerebras	qwen-3-32b	30 req/min	API Key
  OpenRouter	auto (free models)	Daily free	API Key

• ✅ Multi-account rotation — add N Qwen accounts, get N × 2000 req/day
• ✅ Auto-failover — when one account is rate-limited, automatically switch to next
• ✅ Auto-refresh tokens — Qwen access tokens refresh on demand
• ✅ Daily auto-reset — failed accounts reset at UTC midnight (no cron)
• ✅ Free hosting — Cloudflare Workers free tier = 100k requests/day
• ✅ API key gate — protect your proxy with your own bearer token
• ✅ Admin health endpoint — monitor all accounts
• ✅ Single file — no build step, just wrangler deploy

Architecture

Client (any OpenAI SDK) ──> iceProxy Worker ──┬─> Qwen OAuth (multi-account)
                                             ├─> Gemini (Google)
                                             ├─> GLM (Zhipu)
                                             ├─> Cerebras
                                             └─> OpenRouter

All in one ~450-line worker.js.

Quick Start

1. Clone & Install

git clone https://github.com/ice-wocker/iceProxy
cd iceProxy
npm install

2. Create KV Namespace

npx wrangler kv namespace create ACCOUNTS
# Copy the returned "id" into wrangler.toml

3. (Optional) Set API keys for non-Qwen providers

npx wrangler secret put GEMINI_API_KEY       # get free at https://aistudio.google.com/apikey
npx wrangler secret put GLM_API_KEY          # https://bigmodel.cn/
npx wrangler secret put CEREBRAS_API_KEY     # https://cloud.cerebras.ai/
npx wrangler secret put OPENROUTER_API_KEY   # https://openrouter.ai/
npx wrangler secret put OPENAI_API_KEYS      # "sk-xxx,sk-yyy" - clients must use one of these
npx wrangler secret put ADMIN_SECRET         # for /admin/health

4. (Optional) Add Qwen OAuth accounts

# Add first account - shows QR / device code
node scripts/auth.js add account1

# Add more accounts to multiply quota
node scripts/auth.js add account2
node scripts/auth.js add account3

# List local accounts
node scripts/auth.js list

# Push to Cloudflare KV
node scripts/auth.js deploy

5. Deploy

npx wrangler deploy

Your proxy is now live at https://ice-proxy.<your-subdomain>.workers.dev 🎉

Usage

cURL

# Qwen code (free, 2000/day per account)
curl -X POST https://ice-proxy.YOUR.workers.dev/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-xxx" \
  -d '{
    "model": "qwen/qwen3-coder-flash",
    "messages": [{"role": "user", "content": "Write hello world in Python"}]
  }'

# Gemini (free)
curl -X POST .../v1/chat/completions \
  -d '{"model": "gemini/gemini-2.0-flash", "messages": [...]}'

# GLM (free)
curl -X POST .../v1/chat/completions \
  -d '{"model": "glm/glm-4.5-flash", "messages": [...]}'

Python (OpenAI SDK)

from openai import OpenAI

client = OpenAI(
    base_url="https://ice-proxy.YOUR.workers.dev/v1",
    api_key="sk-xxx"  # the OPENAI_API_KEYS you set
)

response = client.chat.completions.create(
    model="qwen/qwen3-coder-flash",
    messages=[{"role": "user", "content": "Explain recursion"}]
)
print(response.choices[0].message.content)

Node.js

import OpenAI from "openai";
const client = new OpenAI({
  baseURL: "https://ice-proxy.YOUR.workers.dev/v1",
  apiKey: process.env.ICE_PROXY_KEY
});
const r = await client.chat.completions.create({
  model: "gemini/gemini-2.0-flash",
  messages: [{ role: "user", content: "Hello" }]
});

Cline / Continue.dev / Cursor / etc.

Set:

• API Base URL: https://ice-proxy.YOUR.workers.dev/v1
• API Key: your OPENAI_API_KEYS value
• Model: any of the 8+ listed (e.g. qwen/qwen3-coder-flash)

Models

Model ID	Provider	Best For	Notes
qwen/qwen3-coder-plus	Qwen	Coding	2000/day per account
qwen/qwen3-coder-flash	Qwen	Coding, fast	2000/day, lower latency
qwen/vision-model	Qwen	Image input	2000/day
gemini/gemini-2.0-flash	Google	Multimodal, fast	1500/day
gemini/gemini-1.5-flash	Google	Multimodal	1500/day
glm/glm-4.5-flash	Zhipu	Chinese	Generous free
cerebras/qwen-3-32b	Cerebras	Fast Qwen 32B	30 req/min
openrouter/auto	OpenRouter	Many free models	Daily free

Endpoints

Endpoint	Method	Description
/health	GET	Liveness check
/v1/models	GET	List models (OpenAI compat)
/v1/chat/completions	POST	Chat completion
/v1/auth/start	POST	Start Qwen OAuth (returns user code)
/v1/auth/poll	POST	Poll Qwen OAuth (with code_verifier)
/admin/health	GET	Account health (requires ADMIN_SECRET)

Multi-Account Logic

When you add multiple Qwen accounts, iceProxy automatically:

1. Picks freshest token — favors accounts whose access_token is far from expiry
2. Auto-refreshes — refreshes access_token using refresh_token when needed
3. Auto-failover — on 429 (rate limit) or 401 (invalid), instantly switches to next account
4. Daily reset — failed accounts are tried again at UTC midnight (no cron job needed)
5. Persistent — tokens cached in Cloudflare KV, survive deploys

With 5 Qwen accounts you get 10,000 req/day for free.

Cost

• Cloudflare Workers free tier: 100,000 requests/day
• KV free tier: 100,000 reads/day, 1,000 writes/day
• Total: $0/month for personal use

License

MIT

⭐ Star History