AgentSpaces for LangChain4j applications on any JVM host: a plain-Java runtime that builds a peer from the same agentspaces.* configuration the Spring Boot starter and the Micronaut library read, the framework-neutral tool catalogue, and the fleet on LangChain4j's extension points (tools, listeners, chat memory, the model service, embeddings, usage). A standalone project on the published AgentSpaces libraries.