Share memory between AI agents without infrastructure

Two AI agents need to collaborate. One researches, the other writes. How do they share what they know? This is not a theoretical question. Multi-agent systems are the dominant trend in agentic AI right now. Gartner reported a 1,445% surge in enterprise inquiries about multi-agent architectures. Every serious AI project is moving from "one big agent" to "specialized agents that cooperate." But here is the dirty secret: the hard part is not building agents. It is sharing state between them. The infrastructure tax When Agent A discovers a fact and Agent B needs to use it, you typically need one of these: Redis for shared key-value state PostgreSQL for structured shared data RabbitMQ/Kafka for message passing A custom API layer to coordinate everything That is a lot of moving parts for what is conceptually simple: "remember this, so another agent can find it later." What if both agents could just read and write to the same file? The architecture Here is what we are building: two Python scr