docs/en/tools/integration/mergeagenthandlertool.mdx
MergeAgentHandlerToolThe MergeAgentHandlerTool enables CrewAI agents to securely access third-party integrations through Merge's Agent Handler platform. Agent Handler provides pre-built, secure connectors to popular tools like Linear, GitHub, Slack, Notion, and hundreds more—all with built-in authentication, permissions, and monitoring.
uv pip install 'crewai[tools]'
export AGENT_HANDLER_API_KEY='your-key-here'Here's how to use a specific tool from your Tool Pack:
from crewai import Agent, Task, Crew
from crewai_tools import MergeAgentHandlerTool
# Create a tool for Linear issue creation
linear_create_tool = MergeAgentHandlerTool.from_tool_name(
tool_name="linear__create_issue",
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa"
)
# Create a CrewAI agent that uses the tool
project_manager = Agent(
role='Project Manager',
goal='Manage project tasks and issues efficiently',
backstory='I am an expert at tracking project work and creating actionable tasks.',
tools=[linear_create_tool],
verbose=True
)
# Create a task for the agent
create_issue_task = Task(
description="Create a new high-priority issue in Linear titled 'Implement user authentication' with a detailed description of the requirements.",
agent=project_manager,
expected_output="Confirmation that the issue was created with its ID"
)
# Create a crew with the agent
crew = Crew(
agents=[project_manager],
tasks=[create_issue_task],
verbose=True
)
# Run the crew
result = crew.kickoff()
print(result)
You can load all available tools from your Tool Pack at once:
from crewai import Agent, Task, Crew
from crewai_tools import MergeAgentHandlerTool
# Load all tools from the Tool Pack
tools = MergeAgentHandlerTool.from_tool_pack(
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa"
)
# Create an agent with access to all tools
automation_expert = Agent(
role='Automation Expert',
goal='Automate workflows across multiple platforms',
backstory='I can work with any tool in the toolbox to get things done.',
tools=tools,
verbose=True
)
automation_task = Task(
description="Check for any high-priority issues in Linear and post a summary to Slack.",
agent=automation_expert
)
crew = Crew(
agents=[automation_expert],
tasks=[automation_task],
verbose=True
)
result = crew.kickoff()
Load only the tools you need:
from crewai import Agent, Task, Crew
from crewai_tools import MergeAgentHandlerTool
# Load specific tools from the Tool Pack
selected_tools = MergeAgentHandlerTool.from_tool_pack(
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa",
tool_names=["linear__create_issue", "linear__get_issues", "slack__post_message"]
)
developer_assistant = Agent(
role='Developer Assistant',
goal='Help developers track and communicate about their work',
backstory='I help developers stay organized and keep the team informed.',
tools=selected_tools,
verbose=True
)
daily_update_task = Task(
description="Get all issues assigned to the current user in Linear and post a summary to the #dev-updates Slack channel.",
agent=developer_assistant
)
crew = Crew(
agents=[developer_assistant],
tasks=[daily_update_task],
verbose=True
)
result = crew.kickoff()
from_tool_name() Method| Argument | Type | Required | Default | Description |
|---|---|---|---|---|
| tool_name | str | Yes | None | Name of the specific tool to use (e.g., "linear__create_issue") |
| tool_pack_id | str | Yes | None | UUID of your Agent Handler Tool Pack |
| registered_user_id | str | Yes | None | UUID or origin_id of the registered user |
| base_url | str | No | "https://ah-api.merge.dev" | Base URL for Agent Handler API |
| session_id | str | No | Auto-generated | MCP session ID for maintaining context |
from_tool_pack() Method| Argument | Type | Required | Default | Description |
|---|---|---|---|---|
| tool_pack_id | str | Yes | None | UUID of your Agent Handler Tool Pack |
| registered_user_id | str | Yes | None | UUID or origin_id of the registered user |
| tool_names | list[str] | No | None | Specific tool names to load. If None, loads all available tools |
| base_url | str | No | "https://ah-api.merge.dev" | Base URL for Agent Handler API |
AGENT_HANDLER_API_KEY=your_api_key_here # Required for authentication
from crewai import Agent, Task, Crew, Process
from crewai_tools import MergeAgentHandlerTool
# Create specialized tools for different agents
github_tools = MergeAgentHandlerTool.from_tool_pack(
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa",
tool_names=["github__create_pull_request", "github__get_pull_requests"]
)
linear_tools = MergeAgentHandlerTool.from_tool_pack(
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa",
tool_names=["linear__create_issue", "linear__update_issue"]
)
slack_tool = MergeAgentHandlerTool.from_tool_name(
tool_name="slack__post_message",
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa"
)
# Create specialized agents
code_reviewer = Agent(
role='Code Reviewer',
goal='Review pull requests and ensure code quality',
backstory='I am an expert at reviewing code changes and providing constructive feedback.',
tools=github_tools
)
task_manager = Agent(
role='Task Manager',
goal='Track and update project tasks based on code changes',
backstory='I keep the project board up to date with the latest development progress.',
tools=linear_tools
)
communicator = Agent(
role='Team Communicator',
goal='Keep the team informed about important updates',
backstory='I make sure everyone knows what is happening in the project.',
tools=[slack_tool]
)
# Create sequential tasks
review_task = Task(
description="Review all open pull requests in the 'api-service' repository and identify any that need attention.",
agent=code_reviewer,
expected_output="List of pull requests that need review or have issues"
)
update_task = Task(
description="Update Linear issues based on the pull request review findings. Mark completed PRs as done.",
agent=task_manager,
expected_output="Summary of updated Linear issues"
)
notify_task = Task(
description="Post a summary of today's code review and task updates to the #engineering Slack channel.",
agent=communicator,
expected_output="Confirmation that the message was posted"
)
# Create a crew with sequential processing
crew = Crew(
agents=[code_reviewer, task_manager, communicator],
tasks=[review_task, update_task, notify_task],
process=Process.sequential,
verbose=True
)
result = crew.kickoff()
Maintain context across multiple tool calls using session IDs:
from crewai import Agent, Task, Crew
from crewai_tools import MergeAgentHandlerTool
# Create tools with the same session ID to maintain context
session_id = "project-sprint-planning-2024"
create_tool = MergeAgentHandlerTool(
name="linear_create_issue",
description="Creates a new issue in Linear",
tool_name="linear__create_issue",
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa",
session_id=session_id
)
update_tool = MergeAgentHandlerTool(
name="linear_update_issue",
description="Updates an existing issue in Linear",
tool_name="linear__update_issue",
tool_pack_id="134e0111-0f67-44f6-98f0-597000290bb3",
registered_user_id="91b2b905-e866-40c8-8be2-efe53827a0aa",
session_id=session_id
)
sprint_planner = Agent(
role='Sprint Planner',
goal='Plan and organize sprint tasks',
backstory='I help teams plan effective sprints with well-defined tasks.',
tools=[create_tool, update_tool],
verbose=True
)
planning_task = Task(
description="Create 5 sprint tasks for the authentication feature and set their priorities based on dependencies.",
agent=sprint_planner
)
crew = Crew(
agents=[sprint_planner],
tasks=[planning_task],
verbose=True
)
result = crew.kickoff()
Merge Agent Handler supports hundreds of integrations across multiple categories:
Visit the Merge Agent Handler documentation for a complete list of available integrations.
The tool provides comprehensive error handling:
All errors are wrapped in MergeAgentHandlerToolError for consistent error handling.