Features
Long-running agent execution with durability
Built-in tool use with custom tool creation
Model Context Protocol (MCP) support
Agent-to-Agent (A2A) protocol for interoperability
Streaming responses from agents
Tracing and monitoring for production
Skill system for modular agent capabilities
Cloud deployment via Celesto CLI
FastAPI integration for serving agents
Authorization in MCP servers
Gmail and Google Calendar integration guides
Open-source with extensible architecture
Role-based agent assignment (PM, architect, engineer, QA)
Structured output generation (requirements, design, code)
Data Interpreter for data analysis tasks
SELA module for self-evolving agents
Multi-agent collaboration and workflow orchestration
Meta-programming support for custom agent behaviors
Modular and extensible architecture
Built-in demo projects and case studies
MIT License fully open-source
Flow orchestration for complex agent pipelines
Integration with GitHub Actions and CI/CD
Community-driven with GitHub and Discord
