What is another word for agent-in-place?
Pronunciation: [ˈe͡ɪd͡ʒəntɪnplˈe͡ɪs] (IPA) 
Agent-in-place refers to someone who is employed or embedded within a specific organization, government or agency in order to gather or transmit vital information. There are a number of synonyms that can be used to describe such individuals, including sleeper agent, deep-cover agent, embedded agent, mole, plant, asset, insider, infiltrator, operative or spy. These terms are all typically used to describe an individual who is actively working undercover or in secret to gather intelligence, carry out a mission, or deliver sensitive information. Each term has its own nuances and connotations, but they all describe someone who is working behind the scenes to achieve their objectives and gain an advantage.
