this is a lightweight LLM proxy, that amongst other things, implements:
- hack club auth
- API keys
- chat and embedding model support
- moderation model support
- (OpenAI's one is free, but it needs an active balance to be able to use it. if you don't want to/can't add payment details to OpenAI's portal and buy credits, we've got you covered.)
- global analytics
- usage statistic logging
- (optional) sentry support
- coding tool (e.g. copilot, cursor) blocking
- spending limits
- replicate support (optional, behind a feature flag)
- posthog analytics + feature flags
is it the best code? probably not. but hey, it works!
you must have a reverse proxy (e.g. traefik) in front of the service to ensure that IPs aren't spoofed. we also highly recommend using openrouter, since it makes things like billing and provider ratelimits a lot less annoying, and also gives you much greater room to experiment and try out new models.
see below.
# what model?
ALLOWED_EMBEDDING_MODELS=qwen/qwen3-embedding-8b,mistralai/codestral-embed-2505,openai/text-embedding-3-large
ALLOWED_IMAGE_MODELS=google/gemini-2.5-flash-image
ALLOWED_LANGUAGE_MODELS=qwen/qwen3-32b,moonshotai/kimi-k2-thinking,openai/gpt-oss-120b,moonshotai/kimi-k2-0905,qwen/qwen3-vl-235b-a22b-instruct,nvidia/nemotron-nano-12b-v2-vl,google/gemini-2.5-flash,openai/gpt-5-mini,deepseek/deepseek-v3.2-exp,deepseek/deepseek-r1-0528,z-ai/glm-4.6
# you should not commit these - although i hope you know that already!
OPENAI_API_KEY=
OPENAI_API_URL=https://openrouter.ai/api
OPENAI_MODERATION_API_KEY=
OPENAI_MODERATION_API_URL=https://api.openai.com/v1/moderations
# get these from https://account.hackclub.com
HACK_CLUB_CLIENT_ID=
HACK_CLUB_CLIENT_SECRET=
# check that users are ID verified?
ENFORCE_IDV=true
# postgres 18 database
# not needed for docker compose
DATABASE_URL=
BASE_URL=https://ai.hackclub.com
NODE_ENV=production # not needed for docker compose
PORT=54321 # not needed for docker compose
# openrouter provisioning key - get it from https://openrouter.ai/account
# this is used to view remaining credit balance
OPENROUTER_PROVISIONING_KEY=
# replicate - for image generation/stt/tts/etc
REPLICATE_API_KEY=
REPLICATE_SESSION_ID=
REPLICATE_USERNAME=
# posthog analytics + feature flags
POSTHOG_API_KEY=
POSTHOG_UI_HOST=https://us.posthog.com
POSTHOG_API_HOST=https://us.i.posthog.com/
# sentry.io support (optional)
SENTRY_DSN=
- bun as the runtime
- hono for the server
- postgres for the database
- drizzle for the ORM
- alpine + htmx +
hono/jsxfor the frontend- developing HCAI? turn on alpine + htmx in the layout if you need to use them!
- sentry for error tracking (optional)
- openrouter as the main LLM provider
- replicate for image generation + speech to text + text to speech + other models
- posthog for analytics + feature flags
- biome for code formatting + linting
- openai for moderation API