Atmosphere/atmosphere
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Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.
About
The real-time engine for AI agents on the JVM. Tokens flow from the LLM runtime to the client through a broadcaster you can filter, gate, and observe — over WebSocket, SSE, long-polling, or gRPC, and out through MCP, A2A, and AG-UI. A plain @Agent is a full deep agent, batteries-included, and Atmosphere handles reconnect, authorization, and governance.
Atmosphere is built for teams that need AI agents to behave like production services: streaming over real transports, guarded before every tool call, observable by tenant and run, and portable across AI frameworks without rewriting the endpoint.
Atmosphere is a real-time, event-driven framework, not an agent-hosting platform. We ship the…
Excerpted from github.com/Atmosphere/atmosphere
Latest metrics
| Stars | 3.8k | 2026-09-12 |
|---|---|---|
| Forks | 761 | 2026-09-12 |
| Commits | 8.6k | 2026-09-12 |
| Releases | 65 | 2026-09-12 |
| Watchers | 224 | 2026-09-12 |
| Open issues | 2 | 2026-09-12 |
| Open PRs | 8 | 2026-09-12 |