humanlayer-ai 0.2.1

Zero-code AI agent monitoring with Human-in-the-Loop for LangChain, LangGraph, CrewAI, AutoGen, and any agentic framework

HumanLayer

Zero-code AI agent monitoring with Human-in-the-Loop (HITL) for any agentic framework.

Install

pip install humanlayer-ai

Quick Start — 3 lines

import humanlayer

humanlayer.init(
    api_key="adr_your_key_here",
    project_id="my-agent",
)

# That's it. All LangChain/LangGraph events are now captured automatically.

Human-in-the-Loop

tools = humanlayer.wrap_tools(
    tools,
    approval_required=[
        "send_email",
        "book_meeting",
        "create_github_issue",
    ]
)

# Agent pauses before these tools.
# Approve or reject from the HumanLayer dashboard.

Works with any agentic framework

• LangChain — auto-instrumented via callback handler
• LangGraph — persistent session tracking
• CrewAI — wrap tools with HITL gates
• AutoGen — intercept agent actions
• Any framework using Python functions as tools

Dashboard

After calling humanlayer.init(), visit your dashboard to:

• See every LLM call, tool use, and agent decision
• Approve or reject tool calls before they execute
• Review the full agent journey for each HITL decision point
• Manage API keys, projects, and team members

Backend

Health check: GET https://hitl-agent-v1.preview.emergentagent.com/api/health

Environment Variables

Variable	Description	Default
HUMANLAYER_API_KEY	Your API key (adr_...)	—
HUMANLAYER_PROJECT_ID	Project identifier	—
HUMANLAYER_API_BASE_URL	Backend URL	https://hitl-agent-v1.preview.emergentagent.com
HUMANLAYER_DEBUG	Enable debug logging	false

License

MIT