ViruSyry is an enterprise-grade multi-tenant B2B FinTech SaaS platform engineered to automate tax ledger transformations, fiscal operations, and financial accounting reporting[cite: 9].

The core innovation is an isolated, non-root operations sidecar container architected using FastMCP and the Model Context Protocol (MCP) standard[cite: 9]. This framework enables integrated AI Agents to safely execute autonomous troubleshooting and diagnostics routines via 6 customized SRE tools[cite: 9]. The sidecar monitors infrastructure parameters in real-time—including database structural drifting via SQLAlchemy inspection, automated container logs analysis for critical exceptions, and live CPU/RAM resource profiling via psutil to prevent Out-Of-Memory (OOM) failures[cite: 9].

The system leverages a production-hardened Python 3.12 and FastAPI backend coupled with asynchronous Celery workers and a Redis broker[cite: 9]. Mission-critical calculations are managed through a high-precision Decimal engine executing strict ‘ROUND_HALF_UP’ parameters alongside programmatic coherence validators (verify_iva_integrity) to prevent discrepancies[cite: 9]. Security integrations feature dual webhook signature validations (HMAC-SHA256), a strict multi-channel 2FA failover authentication loop, and a custom atomic serialization lock (asyncio.Lock) executing random delays (4-10s) to protect instant messaging automation hooks from network bans[cite: 9].

Mafaci.fr is a production-validated multi-tenant B2B SaaS platform engineered for French micro-entrepreneurs to manage electronic invoicing compliant with the DGFiP 2026 mandate (EN 16931 standard)[cite: 8].

The system implements an immutable regulatory archiving bunker using OVHcloud S3 Object Lock Compliance with a strict 11-year cryptographic retention protocol[cite: 8]. All data ingestion via Telegram Bots, Web SPAs, and Cloudflare-routed email gateways executes through an un-bypassable Content Disarm and Reconstruction (CDR) pipeline[cite: 8]. This pipeline combines python-magic validation, ClamAV in-memory stream scanning, and surgical PDF structural sanitation to fully neutralize embedded exploits[cite: 8].

Once safe, the system leverages a Dual-Track execution path: processing structured Factur-X XML data directly using high-precision Decimal scaling, or falling back to a custom local OCR and DeepSeek R1 pipeline for parsing and categorizing national and international receipts[cite: 8]. The platform features full Docker hardening (cap_drop, read_only filesystems, and isolated tmpfs mounts), zero-knowledge multi-salt authentication, and a secure 2FA/TOTP onboarding pipeline for accounting audits[cite: 8].