requirements.txt

# ============================================================
# GramSetu v3 — 2026 Production Dependencies
# Autonomous WhatsApp Agent for Rural India
# ============================================================

# ── Orchestration (LangGraph Multi-Agent State Machine) ──────
langgraph>=0.3.0
langchain-core>=0.3.0
langchain-nvidia-ai-endpoints>=0.3.0
langgraph-checkpoint-sqlite>=2.0.0    # Persistent graph checkpoints (required separately)

# ── MCP Protocol (FastMCP — Tool Discovery via SSE/HTTP) ─────
fastmcp>=2.0.0                        # Model Context Protocol SDK

# ── Validation (Pydantic-AI — Strict Schema Enforcement) ─────
pydantic-ai>=0.1.0
pydantic>=2.10.0
pydantic-settings>=2.7.0

# ── Inference (NVIDIA NIM — Llama 3.1 70B Instruct) ─────────
openai>=1.60.0                        # NIM uses OpenAI-compatible API
httpx>=0.28.0                         # Async HTTP for NIM streaming
edge-tts>=7.0.0                       # Free TTS via Microsoft Edge voices

# ── Browser Automation (Playwright + VLM Navigation) ────────
playwright>=1.49.0                    # Govt portal form-filling
Pillow>=11.0.0                        # Screenshot processing for VLM

# ── WhatsApp Integration (Twilio + FastAPI) ──────────────────
fastapi>=0.115.0
uvicorn[standard]>=0.34.0
twilio>=9.4.0
python-multipart>=0.0.20              # Form data / file uploads

# ── ASR & Speech (NVIDIA NeMo via NIM) ──────────────────────
soundfile>=0.13.0                     # Audio file I/O
numpy>=2.2.0                          # Numeric processing
librosa>=0.10.0                       # Audio feature extraction

# ── Dashboard (Streamlit — Live Browser + Audit View) ────────
streamlit>=1.41.0
streamlit-autorefresh>=1.0.1          # Real-time dashboard refresh

# ── Security & PII Protection ────────────────────────────────
cryptography>=44.0.0                  # AES encryption for PII in transit
python-jose[cryptographic]>=3.3.0     # JWT for API auth

# ── Database (Async SQLite for Audit Logs) ───────────────────
aiosqlite>=0.21.0                     # Non-blocking DB operations

# ── Logging & Observability ──────────────────────────────────
structlog>=24.4.0                     # Structured logging (PII-redacted)
rich>=13.9.0                          # Rich terminal output

# ── Utilities ────────────────────────────────────────────────
python-dotenv>=1.0.1                  # Environment variable management
requests>=2.32.0                      # Sync HTTP fallback
aiofiles>=24.1.0                      # Async file operations