Dynamic pyATS Test Execution

When to Use

• Automated pass/fail validation after configuration changes
• Compliance checks that require multi-step assertions
• Regression testing before and after maintenance windows
• Data-driven validation across multiple interfaces, neighbors, or routes
• Any scenario where you need a formal test report with PASSED/FAILED verdicts

How the Tool Works

The pyats_run_dynamic_test tool accepts a complete Python aetest script as a string. The script is executed in a sandboxed environment with a 300-second timeout.

PYATS_TESTBED_PATH=$PYATS_TESTBED_PATH python3 $MCP_CALL "${PYATS_PYTHON:-python3} -u $PYATS_MCP_SCRIPT" pyats_run_dynamic_test '{"test_script":"<FULL PYTHON SOURCE CODE>"}'

The test_script parameter takes the entire Python source code as a single JSON string. Newlines are encoded as \n, quotes as \".