Agentor
Open source version of Claude Managed Agents. Fastest way to build and deploy reliable AI agents, MCP tools and agent-to-agent.
What is Agentor?
Agentor is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to open source version of claude managed agents. fastest way to build and deploy reliable ai agents, mcp tools and agent-to-agent.
Open source version of Claude Managed Agents. Fastest way to build and deploy reliable AI agents, MCP tools and agent-to-agent.
This server falls under the Coding Agents category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Open source version of Claude Managed Agents. Fastest way to
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx agentorConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Agentor
Agentor is an open-source Python framework and MCP server for building and deploying reliable AI agents with multi-agent communication support via the A2A (Agent-to-Agent) Protocol. It provides a minimal, code-first API for defining agents with tools, instructions, and LLM backends, then automatically exposes each agent as a REST API endpoint and as an MCP tool. It is designed for developers who want to build production-grade agent systems without heavyweight frameworks like LangChain or AutoGen, with optional serverless deployment through the Celesto platform.
Prerequisites
- Python 3.9+ installed
- pip or uv package manager
- API key for your chosen LLM provider (e.g. an Anthropic, OpenAI, or Google API key passed as the model parameter)
- An MCP-compatible client such as Claude Desktop or Claude Code if using the MCP server interface
Install the agentor package
Install from PyPI with pip. The celesto CLI is included automatically for deployment workflows.
pip install agentorDefine an agent in Python
Create a Python file that instantiates an Agentor agent with a name, model identifier, and optional tools and instructions.
from agentor import Agentor
agent = Agentor(
name="My Assistant",
model="anthropic/claude-3.5",
tools=[],
instructions="You are a helpful assistant."
)
result = agent.run("Hello, what can you do?")
print(result)Serve the agent as a REST API
Call agent.serve() to start a FastAPI server on localhost:8000. The /chat endpoint accepts POST requests with a message body.
agent.serve() # starts http://localhost:8000/chatConfigure the MCP server
Add agentor to your MCP client configuration so Claude or other assistants can discover and invoke your agents as MCP tools.
Add built-in tools
Extend the agent with built-in tools like ShellTool for system commands or GetWeatherTool for weather lookups. Pass them in the tools list at instantiation.
from agentor import Agentor
from agentor.tools import ShellTool
agent = Agentor(
name="Dev Agent",
model="anthropic/claude-3.5",
tools=[ShellTool()]
)Agentor Examples
Client configuration
Add to your claude_desktop_config.json to register an Agentor-based MCP server. Adjust the script path to your agent file.
{
"mcpServers": {
"agentor": {
"command": "python",
"args": ["/path/to/your_agent.py"],
"env": {}
}
}
}Prompts to try
Example interactions with an Agentor-powered agent exposed through MCP.
- "What tools do you have available?"
- "Run the shell command 'ls -la /tmp' and show me the output"
- "What is the weather in London right now?"
- "Start a sub-agent to research a topic and report back to me"
- "List all active agents in this system"Troubleshooting Agentor
Agent fails with an LLM authentication error
Agentor passes the model string to the underlying LLM provider. Ensure the relevant API key environment variable is set in your shell (e.g. ANTHROPIC_API_KEY, OPENAI_API_KEY, or GOOGLE_API_KEY) before running the agent script.
MCP client cannot connect to the agentor server
Confirm the agent script calls agent.serve_mcp() or is configured to start the MCP transport. Check that the script path in the MCP config args array is an absolute path and the file is executable by Python.
ShellTool or other built-in tools not found on import
Run 'pip install --upgrade agentor' to ensure you have the latest version. The tools module location may differ between versions — check the GitHub README for the current import path.
Frequently Asked Questions about Agentor
What is Agentor?
Agentor is a Model Context Protocol (MCP) server that open source version of claude managed agents. fastest way to build and deploy reliable ai agents, mcp tools and agent-to-agent. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Agentor?
Follow the installation instructions on the Agentor GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Agentor?
Agentor works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Agentor free to use?
Yes, Agentor is open source and available under the Apache-2.0 license. You can use it freely in both personal and commercial projects.
Agentor Alternatives — Similar Coding Agents Servers
Looking for alternatives to Agentor? Here are other popular coding agents servers you can use with Claude, Cursor, and VS Code.
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Quick Config Preview
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