The phrase "agent appears to be" is correct and usable in written English.
It can be used when discussing the perceived state or role of an agent in a particular context, often in analytical or observational writing.
Example: "Based on the evidence presented, the agent appears to be acting in accordance with the established protocols."
Alternatives: "agent seems to be" or "agent looks to be".
Therefore the search for a better tolerated anti-inflammatory agent appears to be a necessity.
The agent appears to be acting on stress hormone receptors in the skin and near, or within, the hair follicle.
Saifullah Paracha, a successful businessman and for years a New York travel agent, appears to be the oldest of the 172 prisoners still held at the Guantánamo Bay prison.
Sure, it is still complicated, but their interfaces help us make decisions, and the cost difference between them and a human travel agent appears to be too high for most customers these days.
Some of the first proposals for solving the problem of logical omniscience introduce semantical entities which explain why the agent appears to be, but in fact is not really guilty of logical omniscience.
An infectious biological agent appears to be the only viable option for controlling cane toads at such continental scales but as yet no known naturally occurring microbes have been confirmed as Bufo specific.
PAGE A6 Early Suspicions in Spy Case F.B.I. officials were told years ago that a Los Angeles woman accused this week of being a double agent appeared to be spying for China, but they continued to use her.
The invitation to Brian Goldberg, the agent, appeared to be a last-gasp effort to resolve a potentially difficult problem for the Mariners and grant Griffey's wish to be traded.
The government's aim in making these points, which came during testimony by an F.B.I. agent, appeared to be to impress the judge with the risks of releasing Dr. Lee on bail, as his lawyers are seeking.
The temporal changes in the non-linear behavior of the agent appeared to be primarily mediated by gas-exchange through the microbubble shell; temperature and prior acoustic excitation based mechanisms were ruled out.
In an interview, Mr. Lloyd said the manufacture of the rockets, if not the deadly nerve agent, appeared to be within the capabilities of both the Syrian government and the rebels.
