Initial commit: LiteLLM Cloudron app package for Inference Cooperative

README.md

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+# LiteLLM Gateway — Cloudron App
+
+A Cloudron app package for [LiteLLM](https://litellm.ai/), the open-source AI gateway, configured for the **Inference Cooperative**.
+
+LiteLLM is the single gateway between members and the inference backends. It handles per-member API keys, usage metering, rate limiting (via budget caps), and model routing — all behind one OpenAI-compatible endpoint.
+
+## What this provides
+
+- **LiteLLM proxy** with an OpenAI-compatible API on port 4000
+- **Per-member virtual API keys** with budget caps and rate limits
+- **Usage / spend tracking** per key, per model
+- **Model routing** to Tinfoil (TEE-protected inference)
+- **Cloudron PostgreSQL** for keys, teams, and spend logs
+- **Cloudron Redis** for rate limiting and caching
+- **Automatic SSL, backups, and sandboxing** (Cloudron-managed)
+- **Master key + salt key** auto-generated on first start, persisted in `/app/data`
+
+## Architecture
+
+```
+Members → Open WebUI / LobeChat → LiteLLM (this app) → Tinfoil (TEE)
+```
+
+LiteLLM is the control plane (keys, metering, routing). It does **not** run models itself — it forwards to Tinfoil, which runs open models inside trusted execution environments (TEEs).
+
+## Files
+
+- `CloudronManifest.json` — Cloudron app manifest (addons, ports, metadata)
+- `Dockerfile` — wraps LiteLLM's official image for Cloudron's environment
+- `start.sh` — startup script that wires up Cloudron's Postgres/Redis and writes the default config
+- `config.yaml` — default LiteLLM config (Tinfoil-only, two models)
+- `logo.png` — app icon
+
+## Models (MVP)
+
+Two models, both TEE-protected via Tinfoil:
+
+| Model | Role | Price (in/out per M tokens) |
+|-------|------|------------------------------|
+| `deepseek-v4-flash` | Default — best agent performance, 1M context | $0.30 / $0.70 |
+| `gpt-oss-120b` | Fallback — cheapest, built for agentic workflows | $0.15 / $0.60 |
+
+If DeepSeek is down, LiteLLM automatically falls back to GPT-OSS.
+
+---
+
+## Building and installing
+
+This package uses Cloudron's **on-server build** (no local Docker, no registry). The Cloudron CLI uploads the source and Cloudron builds the image on the server.
+
+### Prerequisites
+
+- The [Cloudron CLI](https://docs.cloudron.io/packaging/cli/) installed on a machine with access to the Cloudron server
+- A Cloudron instance with the `inference.coop` domain
+
+### Install
+
+```bash
+# 1. Install the Cloudron CLI (once)
+npm install -g cloudron-cli
+
+# 2. Log in to the Cloudron
+cloudron login my.inference.coop
+
+# 3. From this directory, install (builds on the server)
+cloudron install --location gateway
+```
+
+`--location gateway` installs the app at `gateway.inference.coop`. Omit `--location` to be prompted.
+
+### Configure
+
+After install, set the Tinfoil API key in Cloudron → app → Settings → Environment Variables:
+
+- `TINFOIL_API_KEY` — your Tinfoil API key (from https://tinfoil.sh/)
+
+The following are auto-generated and should **not** be set manually:
+
+- `LITELLM_MASTER_KEY` — generated on first start, stored in `/app/data/.master_key`
+- `LITELLM_SALT_KEY` — generated on first start, stored in `/app/data/.salt_key`
+- `DATABASE_URL` — from Cloudron's PostgreSQL addon
+- `REDIS_HOST`, `REDIS_PORT`, `REDIS_PASSWORD` — from Cloudron's Redis addon
+
+### Access the admin UI
+
+1. Open `https://gateway.inference.coop/ui`
+2. Log in with username `admin` and the master key as password
+3. Find the master key: `cloudron exec --app <app-id> cat /app/data/.master_key`
+
+---
+
+## Updating LiteLLM
+
+This is the routine maintenance path. LiteLLM releases frequently; updating is a two-step change.
+
+### 1. Bump the base image tag
+
+In `Dockerfile`, change the pinned version:
+
+```dockerfile
+FROM ghcr.io/berriai/litellm:main-v1.74.0-stable
+#                              ^^^^^^ bump this
+```
+
+### 2. Bump the manifest version
+
+In `CloudronManifest.json`, update:
+
+```json
+"version": "1.0.0",
+"upstreamVersion": "1.74.0"
+```
+
+### 3. Redeploy
+
+```bash
+cloudron update --app <app-id>
+```
+
+Cloudron rebuilds from source and applies the update. Data (keys, spend logs) persists in PostgreSQL.
+
+### Before updating
+
+- Check the [LiteLLM changelog](https://github.com/BerriAI/litellm/releases) for breaking changes
+- The `start.sh` and `config.yaml` may need adjustment if LiteLLM changes its env-var or config schema
+- Test on a staging instance if the version jump is large
+
+---
+
+## Environment variables
+
+| Variable | Required | Purpose |
+|----------|----------|---------|
+| `TINFOIL_API_KEY` | Yes | Tinfoil API key for TEE inference |
+
+## Connecting Open WebUI
+
+In Open WebUI settings:
+
+- **API Base URL:** `https://gateway.inference.coop/v1`
+- **API Key:** a virtual key created in LiteLLM's Admin UI
+
+## OIDC / SSO (future)
+
+The current package uses LiteLLM's built-in admin/master-key auth, which is sufficient for the MVP. Full OIDC SSO (admin UI behind Cloudron login) is a TODO — add the `"oidc": {}` addon to the manifest and configure LiteLLM's SSO hooks per https://docs.litellm.ai/docs/proxy/custom_sso.
+
+## Related repos
+
+- `co-op/org-dev` — the full inference.coop design doc and deploy scripts
+- `co-op/website` — the public landing page
+- `co-op/design-assets` — logos, fonts, brand materials