# Complete Environment Reference

Comprehensive list of all environment variables available in Open Notebook.

---

## API Configuration

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `API_URL` | No | Auto-detected | URL where frontend reaches API (e.g., http://localhost:5055) |
| `INTERNAL_API_URL` | No | http://localhost:5055 | Internal API URL for Next.js server-side proxying |
| `API_CLIENT_TIMEOUT` | No | 300 | Client timeout in seconds (how long to wait for API response) |
| `OPEN_NOTEBOOK_PASSWORD` | No | None | Password to protect Open Notebook instance |
| `HOSTNAME` | No | `0.0.0.0` (in Docker) | Network interface for Next.js to bind to. Default `0.0.0.0` ensures accessibility from reverse proxies |

---

## AI Provider: OpenAI

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `OPENAI_API_KEY` | If using OpenAI | None | OpenAI API key (starts with `sk-`) |

**Setup:** Get from https://platform.openai.com/api-keys

---

## AI Provider: Anthropic (Claude)

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `ANTHROPIC_API_KEY` | If using Anthropic | None | Claude API key (starts with `sk-ant-`) |

**Setup:** Get from https://console.anthropic.com/

---

## AI Provider: Google Gemini

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `GOOGLE_API_KEY` | If using Google | None | Google API key for Gemini |
| `GEMINI_API_BASE_URL` | No | Default endpoint | Override Gemini API endpoint |
| `VERTEX_PROJECT` | If using Vertex AI | None | Google Cloud project ID |
| `VERTEX_LOCATION` | If using Vertex AI | us-east5 | Vertex AI location |
| `GOOGLE_APPLICATION_CREDENTIALS` | If using Vertex AI | None | Path to service account JSON |

**Setup:** Get from https://aistudio.google.com/app/apikey

---

## AI Provider: Groq

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `GROQ_API_KEY` | If using Groq | None | Groq API key (starts with `gsk_`) |

**Setup:** Get from https://console.groq.com/keys

---

## AI Provider: Mistral

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `MISTRAL_API_KEY` | If using Mistral | None | Mistral API key |

**Setup:** Get from https://console.mistral.ai/

---

## AI Provider: DeepSeek

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `DEEPSEEK_API_KEY` | If using DeepSeek | None | DeepSeek API key |

**Setup:** Get from https://platform.deepseek.com/

---

## AI Provider: xAI

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `XAI_API_KEY` | If using xAI | None | xAI API key |

**Setup:** Get from https://console.x.ai/

---

## AI Provider: Ollama (Local)

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `OLLAMA_API_BASE` | If using Ollama | None | Ollama endpoint (e.g., http://localhost:11434) |

**Setup:** Install from https://ollama.ai

---

## AI Provider: OpenRouter

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `OPENROUTER_API_KEY` | If using OpenRouter | None | OpenRouter API key |
| `OPENROUTER_BASE_URL` | No | https://openrouter.ai/api/v1 | OpenRouter endpoint |

**Setup:** Get from https://openrouter.ai/

---

## AI Provider: OpenAI-Compatible

For self-hosted LLMs, LM Studio, or OpenAI-compatible endpoints:

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `OPENAI_COMPATIBLE_BASE_URL` | If using compatible | None | Base URL for OpenAI-compatible endpoint |
| `OPENAI_COMPATIBLE_API_KEY` | If using compatible | None | API key for endpoint |
| `OPENAI_COMPATIBLE_BASE_URL_LLM` | No | Uses generic | Language model endpoint (overrides generic) |
| `OPENAI_COMPATIBLE_API_KEY_LLM` | No | Uses generic | Language model API key (overrides generic) |
| `OPENAI_COMPATIBLE_BASE_URL_EMBEDDING` | No | Uses generic | Embedding endpoint (overrides generic) |
| `OPENAI_COMPATIBLE_API_KEY_EMBEDDING` | No | Uses generic | Embedding API key (overrides generic) |
| `OPENAI_COMPATIBLE_BASE_URL_STT` | No | Uses generic | Speech-to-text endpoint (overrides generic) |
| `OPENAI_COMPATIBLE_API_KEY_STT` | No | Uses generic | STT API key (overrides generic) |
| `OPENAI_COMPATIBLE_BASE_URL_TTS` | No | Uses generic | Text-to-speech endpoint (overrides generic) |
| `OPENAI_COMPATIBLE_API_KEY_TTS` | No | Uses generic | TTS API key (overrides generic) |

**Setup:** For LM Studio, typically: `OPENAI_COMPATIBLE_BASE_URL=http://localhost:1234/v1`

---

## AI Provider: Azure OpenAI

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `AZURE_OPENAI_API_KEY` | If using Azure | None | Azure OpenAI API key |
| `AZURE_OPENAI_ENDPOINT` | If using Azure | None | Azure OpenAI endpoint URL |
| `AZURE_OPENAI_API_VERSION` | No | 2024-12-01-preview | Azure OpenAI API version |
| `AZURE_OPENAI_API_KEY_LLM` | No | Uses generic | LLM-specific API key |
| `AZURE_OPENAI_ENDPOINT_LLM` | No | Uses generic | LLM-specific endpoint |
| `AZURE_OPENAI_API_VERSION_LLM` | No | Uses generic | LLM-specific API version |
| `AZURE_OPENAI_API_KEY_EMBEDDING` | No | Uses generic | Embedding-specific API key |
| `AZURE_OPENAI_ENDPOINT_EMBEDDING` | No | Uses generic | Embedding-specific endpoint |
| `AZURE_OPENAI_API_VERSION_EMBEDDING` | No | Uses generic | Embedding-specific API version |

---

## AI Provider: VoyageAI (Embeddings)

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `VOYAGE_API_KEY` | If using Voyage | None | Voyage AI API key (for embeddings) |

**Setup:** Get from https://www.voyageai.com/

---

## Text-to-Speech (TTS)

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `ELEVENLABS_API_KEY` | If using ElevenLabs TTS | None | ElevenLabs API key for voice generation |
| `TTS_BATCH_SIZE` | No | 5 | Concurrent TTS requests (1-5, depends on provider) |

**Setup:** Get from https://elevenlabs.io/

---

## Database: SurrealDB

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `SURREAL_URL` | Yes | ws://surrealdb:8000/rpc | SurrealDB WebSocket connection URL |
| `SURREAL_USER` | Yes | root | SurrealDB username |
| `SURREAL_PASSWORD` | Yes | root | SurrealDB password |
| `SURREAL_NAMESPACE` | Yes | open_notebook | SurrealDB namespace |
| `SURREAL_DATABASE` | Yes | open_notebook | SurrealDB database name |

---

## Database: Retry Configuration

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `SURREAL_COMMANDS_RETRY_ENABLED` | No | true | Enable retries on failure |
| `SURREAL_COMMANDS_RETRY_MAX_ATTEMPTS` | No | 3 | Maximum retry attempts |
| `SURREAL_COMMANDS_RETRY_WAIT_STRATEGY` | No | exponential_jitter | Retry wait strategy (exponential_jitter/exponential/fixed/random) |
| `SURREAL_COMMANDS_RETRY_WAIT_MIN` | No | 1 | Minimum wait time between retries (seconds) |
| `SURREAL_COMMANDS_RETRY_WAIT_MAX` | No | 30 | Maximum wait time between retries (seconds) |

---

## Database: Concurrency

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `SURREAL_COMMANDS_MAX_TASKS` | No | 5 | Maximum concurrent database tasks |

---

## LLM Timeouts

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `ESPERANTO_LLM_TIMEOUT` | No | 60 | LLM inference timeout in seconds |
| `ESPERANTO_SSL_VERIFY` | No | true | Verify SSL certificates (false = development only) |
| `ESPERANTO_SSL_CA_BUNDLE` | No | None | Path to custom CA certificate bundle |

---

## Content Extraction

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `FIRECRAWL_API_KEY` | No | None | Firecrawl API key for advanced web scraping |
| `JINA_API_KEY` | No | None | Jina AI API key for web extraction |

**Setup:**
- Firecrawl: https://firecrawl.dev/
- Jina: https://jina.ai/

---

## Network / Proxy

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `HTTP_PROXY` | No | None | HTTP proxy URL for outbound HTTP requests |
| `HTTPS_PROXY` | No | None | HTTPS proxy URL for outbound HTTPS requests |
| `NO_PROXY` | No | None | Comma-separated list of hosts to bypass proxy |

Route all outbound HTTP requests through a proxy server. Useful for corporate/firewalled environments.

The underlying libraries (esperanto, content-core, podcast-creator) automatically detect proxy settings from these standard environment variables.

**Affects:**
- AI provider API calls (OpenAI, Anthropic, Google, Groq, etc.)
- Content extraction from URLs (web scraping, YouTube transcripts)
- Podcast generation (LLM and TTS provider calls)

**Format:** `http://[user:pass@]host:port` or `https://[user:pass@]host:port`

**Examples:**
```bash
# Basic proxy
HTTP_PROXY=http://proxy.corp.com:8080
HTTPS_PROXY=http://proxy.corp.com:8080

# Authenticated proxy
HTTP_PROXY=http://user:password@proxy.corp.com:8080
HTTPS_PROXY=http://user:password@proxy.corp.com:8080

# Bypass proxy for local hosts
NO_PROXY=localhost,127.0.0.1,.local
```

---

## Debugging & Monitoring

| Variable | Required? | Default | Description |
|----------|-----------|---------|-------------|
| `LANGCHAIN_TRACING_V2` | No | false | Enable LangSmith tracing |
| `LANGCHAIN_ENDPOINT` | No | https://api.smith.langchain.com | LangSmith endpoint |
| `LANGCHAIN_API_KEY` | No | None | LangSmith API key |
| `LANGCHAIN_PROJECT` | No | Open Notebook | LangSmith project name |

**Setup:** https://smith.langchain.com/

---

## Environment Variables by Use Case

### Minimal Setup (Cloud Provider)
```
OPENAI_API_KEY (or ANTHROPIC_API_KEY, etc.)
```

### Local Development (Ollama)
```
OLLAMA_API_BASE=http://localhost:11434
```

### Production (OpenAI + Custom Domain)
```
OPENAI_API_KEY=sk-proj-...
API_URL=https://mynotebook.example.com
SURREAL_USER=production_user
SURREAL_PASSWORD=secure_password
```

### Self-Hosted Behind Reverse Proxy
```
OPENAI_COMPATIBLE_BASE_URL=http://localhost:1234/v1
API_URL=https://mynotebook.example.com
```

### Corporate Environment (Behind Proxy)
```
OPENAI_API_KEY=sk-proj-...
HTTP_PROXY=http://proxy.corp.com:8080
HTTPS_PROXY=http://proxy.corp.com:8080
NO_PROXY=localhost,127.0.0.1
```

### High-Performance Deployment
```
OPENAI_API_KEY=sk-proj-...
SURREAL_COMMANDS_MAX_TASKS=10
TTS_BATCH_SIZE=5
API_CLIENT_TIMEOUT=600
```

### Debugging
```
OPENAI_API_KEY=sk-proj-...
LANGCHAIN_TRACING_V2=true
LANGCHAIN_API_KEY=your-key
```

---

## Validation

Check if a variable is set:

```bash
# Check single variable
echo $OPENAI_API_KEY

# Check multiple
env | grep -E "OPENAI|API_URL"

# Print all config
env | grep -E "^[A-Z_]+=" | sort
```

---

## Notes

- **Case-sensitive:** `OPENAI_API_KEY` ≠ `openai_api_key`
- **No spaces:** `OPENAI_API_KEY=sk-proj-...` not `OPENAI_API_KEY = sk-proj-...`
- **Quote values:** Use quotes for values with spaces: `API_URL="http://my server:5055"`
- **Restart required:** Changes take effect after restarting services
- **Secrets:** Don't commit API keys to git

---

## Quick Setup Checklist

- [ ] Choose AI provider (OpenAI, Anthropic, Ollama, etc.)
- [ ] Get API key if cloud provider
- [ ] Add to .env or docker.env
- [ ] Set `API_URL` if behind reverse proxy
- [ ] Change `SURREAL_PASSWORD` in production
- [ ] Verify with: `docker compose logs api | grep -i "error"`
- [ ] Test in browser: Go to Settings → Models
- [ ] Try a test chat

Done!
