How to hire an AI agent: a job description, a probation period and a named manager

You already know how to bring someone new into the business. You write down what the job is. You tell them what they can and cannot sign off. You check their work closely for the first few weeks and less closely after that. You make sure they know who they report to.

Hiring an AI agent goes wrong when people skip all of that because it is software. Do it the way you would for a person and it goes right.

1. Write the job description

One job, written as outcomes. Not “help with HR” but:

• Have the monthly pay run prepared three working days before pay day, with every change since last month listed.
• Tell me each Monday whose right to work, DBS or training expires in the next 60 days.
• Chase unsigned contracts every three days until they come back.

If you cannot write the outcomes down, the agent will not be the problem. Vague briefs produce vague work from people too.

2. Decide what it can see

A new payroll clerk gets access to pay. They do not get the disciplinary files. Give an agent the same treatment. In roothr.ai an agent works with the permissions of the person asking, so a line manager’s question never reaches beyond their team. Whatever you use, ask where that boundary is and test it.

3. Decide what it can do without you

Split its work into three:

• Do freely: read, check, calculate, draft, remind you.
• Do with approval: send a message, release a payslip, file with HMRC, post a journal, make an offer, delete a record.
• Never do: decide who is hired, disciplined or dismissed. Give legal, tax or immigration advice.

Be suspicious of anything that puts payments or filings in the first group.

4. Name its manager

Every agent needs one named person who approves its work and is answerable for it. Not “the office”. If that person is on holiday, name the cover. An approval nobody owns becomes a button that gets clicked.

5. Give it a probation period

Run it alongside the way you work now for one cycle.

• Payroll: let the agent prepare the run and compare it with the one you prepared yourself. Look at every difference. Sometimes the agent is wrong. Quite often it has found something.
• Compliance: ask it for everything expiring in 90 days and compare with your spreadsheet.
• Recruitment: have it shortlist a role you have already filled and see whether it would have found the person you hired.

Keep a note of what it got wrong and whether it told you it was unsure. An agent that says “this record is missing, I have stopped” is passing probation.

6. Review it like anyone else

After a month, ask three questions. How many hours did it give back? What did it catch that we would have missed? What did we have to correct? If the answers are good, give it the next job. If they are not, change the brief before you blame the agent.

Red flags when you are choosing one

• It cannot show you what it read to reach an answer.
• There is no log of who approved what.
• The vendor talks about “fully autonomous” payroll or hiring as a selling point.
• Nobody can tell you where the data is processed.
• Each agent is priced separately, so you are discouraged from covering the whole month.

In roothr.ai all eight agents are in every plan, so the choice is about which job to hand over first, not what it costs. See the agents you can hire, or read what AI agents do in HR in 2026.