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Juniper JunOS device automation via PyEZ/NETCONF — CLI execution, configuration management, Jinja2 template rendering, device facts, batch operations, config diff and rollback comparison (10 tools).
Passed 14 of 19 test cases with the skill, and 3 of 19 without it.
and 15 more in the full report
12 fixed4 passed either way6 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which default filename is used for JunOS router inventory, and which environment variable overrides this path?
| Checked | Without skill | With skill |
|---|---|---|
| Identifies default inventory file as devices.json. | Missed | Passed |
| Identifies environment variable as JUNOS_DEVICES_FILE. | Missed | Passed |
The instructions your model reads when the skill loads.
| Field | Value |
|---|---|
| Repository | Juniper/junos-mcp-server |
| Transport | stdio (default for CLI), streamable-http (for IDE) |
| Python | 3.10+ (3.11 recommended) |
| Protocol | SSH → NETCONF → PyEZ (junos-eznc) |
| Dependencies | junos-eznc>=2.7.4, jxmlease>=1.0.3, lxml>=6.0.0, mcp[cli]>=1.12.2, ncclient>=0.6.15, paramiko>=3.5.1 |
| Install | git clone + pip install -r requirements.txt or pip install . |
| Entry Point | junos-mcp-server -f devices.json -t stdio or python3 jmcp.py -f devices.json -t stdio |
| Container | docker build -t junos-mcp-server . (python:3.11-slim based) |
Devices are defined in a devices.json file (not environment variables):
{
"core-rtr-01": {
"ip": "10.0.0.1",
"port": 22,
"username": "netops",
"auth": {
"type": "ssh_key",
"private_key_path": "/home/user/.ssh/junos_key"
}
},
"edge-rtr-02": {
"ip": "10.0.0.2",
"port": 22,
"username": "admin",
"auth": {
"type": "password",
"password": "changeme"
}
}
}
test cases passed, vs 3 / 19 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.