I'm Renzo Franceschini, a software engineer from Argentina, based in Italy, with 10 years of backend experience. I've led backend teams and projects at EssilorLuxottica, PwC and Forian / Helix Technologies, usually as Tech Lead or Main Backend Engineer.
My main focus is Guard Core: open-source API security that runs inside your app instead of in front of it, so it sees what the edge can't. One detection engine, thin adapters for the framework you already run, in Python, TypeScript, Go, Rust, PHP and the JVM, plus a SaaS for monitoring and response at guard-core.com.
- fastapi-guard alone gets about 62k downloads a month.
- Merged upstream in DeepTutor, Xinference and Vexa, and listed on Fastify's ecosystem page.
- 6 engines, 6 telemetry agents and 23 framework adapters, one maintainer, 100% test coverage as a floor.
The full list of engines, adapters and agents lives on the Guard-Core org.
Maintaining that many repos alone takes infrastructure, so I build it:
- RoboCo - an AI agent organization: 25 agents and one human CEO running a build, review, document, merge pipeline where only the human merges to
master. - Hummin - AI agent toolkit: unified LLM API, agent loop, TUI and a coding agent CLI.
- Murmur - a local message bus for AI CLI sessions, so parallel agents can review and challenge each other's work.
- fable-mode and Agent Runway - Claude Code plugins for agent discipline and project-aware subagents.
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