Henri Brouillard

Research

Henri works on the tooling layer alongside Akoss Vidor and Olu Folarin. His contributions centre on the long-term archival and versioning of the lab's trace stores — what gets kept, for how long, in what format, with what migration plan when the format changes.

He has been with alphabell since 2020 and is based in Paris. He is one of the contributors most concerned with the lab's ability to reconstruct, decades from now, the artefacts behind any given index entry; the archival policy he co-authored is now standard across the federation.

Background

Ph.D. computer science, Sorbonne Université, 2014.

Prior to alphabell: Sorbonne; Wayfarer Institute; Cantor Initiative.

Selected publications

• Oct 2024 · ab-federated-comp
  A Federated Compute Scheduler for an Asynchronous Research Lab
  Pranav Iyer, Yusra Habibi, Akoss Vidor
• Oct 2025 · ab-durable-agents
  Durable Agent Substrate v1: persistent state, learned tool affordances, and verifiable execution traces
  Mira Holloway, Dineth Karunaratne, Priya Anand, Cheung Wai-Lin
• Sep 2024 · ab-interpretabili
  Interpretability Cell Pairing: how every dual-use capability run gets a watchful sibling
  Karima Belkadi, Hester Vandekerckhove, Yuki Cho
• Apr 2025 · ab-agent-negotiat
  Negotiation Protocols Among Heterogeneous Agents: a benchmark and three baselines
  Roman Iliescu, Yvonne Akande, Lakshmi Ravi, Pascal Niedermeier
• Sep 2025 · ab-scalable-overs
  Scalable Oversight for Multi-Step Agent Systems: a Debate-Plus-Trace Approach
  Ifeoma Nwosu-Howard, Hiroshi Tanigawa, Maral Lotfi, Ruth Wernicke

Full publications index →

Recent talks

• Operational discipline in a federated lab, SREcon EMEA 2025