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The pyATS MCP server enables structured interaction with network devices via STDIO using JSON-RPC, offering a secure and portable way to manage network configurations.
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The pyATS MCP server enables structured interaction with network devices via STDIO using JSON-RPC, offering a secure and portable way to manage network configurations.
The pyATS MCP server offers a relatively safe way to interact with network devices due to its input validation and command restrictions. However, the ability to make configuration changes and the reliance on environment variables for security introduce some risk. It is safest when used in a controlled environment with a well-defined and trusted testbed configuration.
Performance is limited by the speed of the network connection and the processing power of the server. Large configurations or log files may take longer to retrieve. Consider optimizing network device configurations for faster retrieval.
The primary cost considerations are the resources required to run the server (CPU, memory, disk space) and the network bandwidth used for communication. There are no direct API call costs associated with this server.
{
"servers": {
"pyats": {
"type": "stdio",
"command": "python3",
"args": [
"-u",
"/Users/johncapobianco/pyATS_MCP/pyats_mcp_server.py"
],
"env": {
"PYATS_TESTBED_PATH": "/Users/johncapobianco/pyATS_MCP/testbed.yaml"
}
}
}PYATS_TESTBED_PATHrun_show_commandExecutes show commands on network devices and returns the output.
Read-only operation; retrieves information without modifying the device.
run_ping_commandExecutes ping tests on network devices and returns the results.
Read-only operation; tests network connectivity without modifying the device.
apply_configurationApplies configuration commands to network devices.
Modifies the configuration of network devices, potentially disrupting network services.
learn_configFetches the running configuration from a network device.
Read-only operation; retrieves the device configuration without modifying it.
learn_loggingFetches system logs from a network device.
Read-only operation; retrieves log data without modifying the device.
Environment Variable
hybrid
The pyATS MCP server offers a relatively safe way to interact with network devices due to its input validation and command restrictions. However, the ability to make configuration changes and the reliance on environment variables for security introduce some risk. It is safest when used in a controlled environment with a well-defined and trusted testbed configuration.
Autonomy is limited by the available tools and the configured permissions within the pyATS testbed. The level of autonomy can be adjusted by modifying the testbed configuration and the commands allowed by the server.
Production Tip
Use a dedicated user account with restricted privileges for the pyATS MCP server to minimize the impact of potential security breaches.
It provides a structured, model-driven interface to interact with network devices using pyATS and Genie via JSON-RPC over STDIO.
It uses Pydantic for input validation, blocks unsafe commands, and operates via STDIO to minimize the attack surface.
It relies on environment variables for authentication, specifically the PYATS_TESTBED_PATH.
Yes, it is designed for integration with LangGraph using STDIO-based communication.
It supports Cisco IOS and NX-OS devices defined in a pyATS testbed.
The server gracefully handles parsing fallbacks and errors, returning informative error messages via JSON-RPC.
Yes, the server blocks unsafe commands like erase, reload, and write, and prevents pipe/redirect abuse.
John Capobianco
Author & Maintainer