nexus/.env.example at main · mustdobetter/nexus · GitHub

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# Nexus Configuration
# Copy this file to .env and customize as needed

# ===========================================
# ChromaDB Settings
# ===========================================

# ChromaDB server URL
CHROMA_HOST=http://localhost:8000

# Collection name for storing indexed chunks
CHROMA_COLLECTION=nexus

# ===========================================
# Embedding Settings
# ===========================================

# Embedding model name (for Ollama)
# Uses Nomic Embed Text V2 with instruction prefixes
EMBEDDING_MODEL=nomic-embed-text

# Ollama server URL (dev environment)
OLLAMA_HOST=http://localhost:11434

# ===========================================
# LLM Settings
# ===========================================

# LLM model name
# Dev: gpt-oss:20b (via Ollama)
# Prod: gpt-5.2 (via OpenAI API)
LLM_MODEL=gpt-oss:20b

# OpenAI API key (production only - injected via CI/CD)
# OPENAI_API_KEY=sk-...

# OpenAI-compatible API base URL
# Leave unset to use Ollama in dev
# Set to https://api.openai.com/v1 for production
# OPENAI_BASE_URL=https://api.openai.com/v1

# ===========================================
# Retrieval Settings
# ===========================================

# Number of chunks to retrieve per query
RETRIEVAL_TOP_K=8

# Maximum chunks per file (diversity constraint)
RETRIEVAL_MAX_PER_FILE=2

# Maximum L2 distance for retrieved chunks (lower = stricter, default 1.5)
SIMILARITY_THRESHOLD=1.5

# ===========================================
# Logging Settings
# ===========================================

# Log level: DEBUG, INFO, WARNING, ERROR
LOG_LEVEL=INFO

# Log format: json (machine-readable) or console (human-readable)
LOG_FORMAT=json