We build Atmosphere — the open-source runtime that turns any Java class into an AI agent with streaming delivery over WebSocket, SSE, and gRPC. Protocol exposure via MCP, A2A, and AG-UI. Multi-channel routing to Slack, Telegram, and Discord. Skills follow the Agent Skills standard. In production since 2008.
The agent runtime, protocol exposure, LLM backends, transport layer, and client SDKs your application needs — so you can focus on what makes your agent different.
One annotation wires everything: AI endpoint, commands, tools, skill file, conversation memory, and protocol exposure. Import skills from GitHub — 1,200+ available. Auto-discovers skill files at META-INF/skills/ on the classpath.
Click to exploreThree open protocols auto-registered based on classpath. Your @Agent is discoverable by any MCP client, any A2A agent, and any AG-UI frontend — zero configuration.
Click to exploreNot an LLM library — the infrastructure layer underneath. Pick any backend, swap by changing one Maven dependency. Your agent code never changes.
Click to exploreWebSocket, SSE, long-polling — your code never changes. Atmosphere picks the best transport, handles fallback, reconnection, heartbeats, and message caching automatically.
Click to exploreatmosphere.js ships hooks for React, Vue, and Svelte with rooms, presence tracking, offline queues, and streaming out of the box. Also available for React Native.
Click to exploreThe Async IO team brings over 30 years of experience in software engineering, real-time systems, and AI. We contributed to Java NIO/AIO in the JVM and have been shipping real-time Java infrastructure since before WebSocket was standardized.
Atmosphere has been in continuous production since 2008 — powering trading floors, healthcare systems, collaboration tools, and AI applications at companies from startups to the Fortune 500.
@Agent wires the AI endpoint, commands, tools, skill file, conversation memory, and protocol exposure. Add MCP, A2A, and AG-UI by putting the JAR on the classpath.
MCP, A2A, and AG-UI are auto-registered based on classpath. Your @Agent is discoverable by any MCP client, any A2A agent, and any AG-UI frontend.
Built-in, Spring AI, LangChain4j, Google ADK, Embabel — pick any backend and swap by changing one Maven dependency. Your agent code stays the same.
React, Vue, Svelte, and React Native hooks with streaming, offline queues, and auth token refresh. One API across all platforms.
Get support from the core team with fast response times. Meet your production schedule and compliance requirements.
