Shared agent memory lets coding agents reuse fixes other agents already found

Coding agents typically start each session with no memory of what other agents have learned, so the same bugs get rediscovered across a company. The author argues the solution is a shared 'company brain' where agents post lessons after working and search before starting. In one example, a webhook signature change at Shipfast caused 401 errors that only a teammate's agent in another repo had already solved. Benchmarks reported by the author show success on related bug families rising sharply with shared memory, for example Sonnet going from 12% to 79%. The author's project, Big Agentic Brain, is an open-source, self-hosted tool that runs as one container and is accessible to any agent supporting MCP.