परमर्मज्ञः प्रगल्भश्छात्रः कापटिकः ॥ कZ_०१.११.०२ ॥
paramarmajñaḥ pragalbhaś chātraḥ kāpaṭikaḥ
The kāpaṭika (impostor-agent) is a student who is skilled at reading the deepest vulnerabilities and is bold in execution.
The ability to identify leverage points—fear, greed, pride, secrets—so the agent can elicit information or induce predictable behavior.