https://i-machine.fr/blog Engineering notes on self-hosted MCP infrastructure, C++ plugin systems and production AI agents. en Sun, 17 May 2026 00:00:00 +0000 https://i-machine.fr/blog/self-hosted-rag-duckdb-vss https://i-machine.fr/blog/self-hosted-rag-duckdb-vss Sun, 17 May 2026 00:00:00 +0000 Running retrieval-augmented generation entirely in-process on DuckDB and its vss extension : No external vector database, no egress, zero network hop per query. MCP RAG DuckDB Self-Hosted Privacy https://i-machine.fr/blog/deploying-mcp-private-network https://i-machine.fr/blog/deploying-mcp-private-network Sun, 17 May 2026 00:00:00 +0000 Packaging MCP for corporate networks : Modular .deb artefacts, a private GPG-signed APT repo, and systemd units installed via apt. No outbound network needed. MCP Deployment Debian systemd Enterprise https://i-machine.fr/blog/rbac-audit-logging-mcp https://i-machine.fr/blog/rbac-audit-logging-mcp Sun, 17 May 2026 00:00:00 +0000 Per-user access control for MCP tools at the dispatch layer : Prefix-based ToolBridge filtering plus a conversation store that doubles as the audit trail. MCP RBAC Security Audit Enterprise https://i-machine.fr/blog/self-hosted-mcp-infrastructure-enterprise https://i-machine.fr/blog/self-hosted-mcp-infrastructure-enterprise Fri, 15 May 2026 00:00:00 +0000 A complete guide to production-grade Model Context Protocol infrastructure on your own hardware : Architecture, plugin model, AI capabilities, and deployment. MCP Enterprise Architecture Self-Hosted https://i-machine.fr/blog/why-cpp26-mcp-server https://i-machine.fr/blog/why-cpp26-mcp-server Fri, 15 May 2026 00:00:00 +0000 Performance, plugin hot-reload, multi-client (native + WASM), and P2996 reflection : The technical case for C++26 over Go, Rust, or Python for an MCP server. MCP C++26 Architecture https://i-machine.fr/blog/mcp-vs-rest-protocol-design https://i-machine.fr/blog/mcp-vs-rest-protocol-design Fri, 15 May 2026 00:00:00 +0000 WebSocket JSON-RPC 2.0 versus stateless HTTP REST for AI agent infrastructure : Latency, streaming, server-initiated notifications, and operational trade-offs. MCP Protocol WebSocket JSON-RPC https://i-machine.fr/blog/hexagonal-architecture-plugin-systems https://i-machine.fr/blog/hexagonal-architecture-plugin-systems Fri, 15 May 2026 00:00:00 +0000 Applying ports-and-adapters in the I-Machine plugin platform : Pure domain, explicit ports, and adapters connecting an MCP server and two clients to one core. Architecture C++ Plugins Hexagonal https://i-machine.fr/blog/cpp-plugin-hot-reload-dlopen-pitfalls https://i-machine.fr/blog/cpp-plugin-hot-reload-dlopen-pitfalls Fri, 15 May 2026 00:00:00 +0000 Three design constraints for hot-reloading C++ plugins safely under load : Lock discipline around initialise, async broadcasts, and dlclose verification. C++ Plugins Hot-Reload Production https://i-machine.fr/blog/building-react-agent-mcp https://i-machine.fr/blog/building-react-agent-mcp Fri, 15 May 2026 00:00:00 +0000 Inside the AureganeAgent : A reason-act loop, conversation persistence, multi-backend brains, an RBAC-filtered tool bridge, and seven MCP tools. MCP Agents ReAct Architecture https://i-machine.fr/blog/mission-as-template-declarative-agents https://i-machine.fr/blog/mission-as-template-declarative-agents Fri, 15 May 2026 00:00:00 +0000 CompanyManager treats agents as typed mission templates : Versioned, audited, prompt-injection-resistant agents non-technical users can instantiate. MCP Agents CompanyManager Templating https://i-machine.fr/research/vram-allocation-modular-neural-plugins https://i-machine.fr/research/vram-allocation-modular-neural-plugins Fri, 15 May 2026 00:00:00 +0000 The VRAMManager in the I-Machine Neural layer : RAII handles, prioritised LRU eviction, and refcounted shared weights so plugins share GPU memory cleanly. MCP GPU VRAM Modular-AI https://i-machine.fr/research/modular-ai-micro-transformers-mcp-plugins https://i-machine.fr/research/modular-ai-micro-transformers-mcp-plugins Fri, 15 May 2026 00:00:00 +0000 A research direction : Treating small specialised models as plugins, combining C++ code paths with neural inference behind a shared plugin host and shared VRAM. Neural Modular-AI Hybrid-Code Research https://i-machine.fr/blog/chatbot-to-agent-when-adopt-mcp https://i-machine.fr/blog/chatbot-to-agent-when-adopt-mcp Fri, 15 May 2026 00:00:00 +0000 When to move an internal AI assistant from a chatbot wrapper to a stateful MCP agent platform : Tool surface, action authority, and audit and rollback needs. MCP Agents Enterprise Strategy https://i-machine.fr/blog/cpp26-reflection-p2996-production https://i-machine.fr/blog/cpp26-reflection-p2996-production Fri, 15 May 2026 00:00:00 +0000 How we use C++26 static reflection (P2996) to auto-generate JSON-RPC tool schemas, enum serialisation, and struct (de)serialisation in production. C++26 Reflection P2996 GCC