sagents-ai / sagents

What it does

• Human-In-The-Loop (HITL). Customizable permission system that pauses execution for approval on sensitive operations, including parallel tool calls where each action can be individually approved/rejected. Works across both main agents and S
• Composable Execution Modes. Agent run loops are explicit Elixir pipelines built from reusable steps. Mix and match built-in steps (call_llm, execute_tools, check_pre_tool_hitl, propagate_state, etc.) or write your own. Different agents can
• Structured Agent Completion (until_tool). Force agents to loop until they call a specific tool, returning the result as a clean {:ok, state, %ToolResult{}} tuple. No more hoping the LLM follows your output format — get structured data you
• SubAgents. Delegate complex tasks to specialized child agents for efficient context management and parallel execution
• GenServer Architecture. Each agent runs as a supervised OTP process with automatic lifecycle management