Features
Multi-model support (DeepSeek V4, GLM 5.2, OpenAI Codex, Anthropic, etc.)
Sub-agent parallel execution with per-sub-agent provider routing
MCP consumption and exposure via stdio and HTTP/SSE
Constitution-based agent identity and authority hierarchy
Plan, Agent, and YOLO modes with orthogonal approval policies
Sandboxed execution: macOS seatbelt, Linux landlock
Lifecycle hooks for pre/post tool execution and mode changes
Public HTTP Runtime API for integrations and automation
Context input budget reuse across routes
Model Lab for testing and comparing models
Fleet/WhaleFlow for durable task execution and fleet management
Community activity feed on homepage
One-line npm install (no Rust toolchain required)
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