agentica

Build AI agents that run for hours, not seconds. Async-first Python harness: auto context-compaction, cost budgets & death-spiral guards, persistent cross-session memory, self-evolving SKILL.md, /goal long-task loop, 40+ tools, 20+ models, MCP/ACP. Ships a CLI + Web Gateway out of the box. Maintained by shibing624 on GitHub, where it has earned 345 stars from the community.

It's actively developed around agent, agents, langchain, and is a solid reference for anyone building with these tools.