Agents' next frontier: agent-to-agent and network effects — Jean-Denis Greze, Town
Sep 3, 2026 · 21:17
Jean-Denis Greze, CTO of Town and former Plaid CTO, argues agent-to-agent is not a useful concept: every LLM system is a search problem, and what matters is whether the right information sits in the context window at the moment of a tool call. The ideal is a single agent with access to all the world's information; privacy, not context length, blocks it — his Coase framing: privacy is the transaction cost. He grades five strategies by how closely each approximates that impossible agent: a shared trust boundary like an HR agent scoped to the most junior access, custom tools that read everyone's mail but return only a connection score, shared silos fed by a sweeper agent, humans as the conduit, and a black box that searches every silo unasked, seeking approval only from the information's owner.
