25 AI agent examples that do real work, by department

Colleagues meeting around a table

Here are 25 AI agent examples that commercially available tools do today, grouped by department, with the risk level of each. The pattern across all of them is the same: the task repeats, the rules are mostly clear, and the agent's work is cheap to check. Finance and admin jobs dominate the low-risk end; recruitment and anything touching money or people's rights sit at the high end and need a human decision-maker. Use the table to find your first agent and the notes to avoid the common first mistake.

Key facts

  • 25 examples across finance, customer service, sales, admin, marketing, recruitment, HR, operations and engineering.
  • Best first agent: invoice chasing. Most mature: coding. Highest risk: CV screening and anything deciding about people.
  • Common thread: repetitive, rule-bound, cheap to check.
  • UK SMEs: 54% now use AI (BCC 2026); 95% report no headcount impact.

On this page

Which jobs do people hand to an AI agent first?

List of eight jobs AI agents are commonly given first: invoice chasing, support triage, lead qualification, meeting prep, competitor monitoring, bank reconciliation, CV screening and research
The usual first eight. Each is a loop with tools, not a single answer.

AI agents: 25 examples by department

#AgentWhat it doesDepartmentRisk
1Invoice chaserFinds overdue invoices, sends reminders in your tone, checks payment, escalatesFinanceLow
2Bank reconciliationMatches transactions to invoices and bills, queries exceptionsFinanceLow
3Expense coderReads receipts, codes them to the ledger, flags policy breachesFinanceLow
4Support triageReads each ticket, answers routine ones, routes the rest with a summaryCustomer serviceMedium
5Refund handlerChecks eligibility against policy, issues refunds within a limit, logsCustomer serviceMedium: cap the limit
6Review responderDrafts replies to online reviews for approvalCustomer serviceLow
7Lead qualifierLooks up the company, scores fit, drafts a tailored reply, offers timesSalesLow
8CRM hygieneFinds stale deals and missing fields, drafts the updateSalesLow
9Proposal drafterAssembles a first-draft proposal from past wins and the briefSalesLow
10Inbox summariserMorning digest: needs a reply, needs a decision, can waitAdminLow
11Meeting prepFinds a slot, sends invites, writes a one-page brief from past emailsAdminLow
12Notes to actionsTurns meeting notes into owners, dates and follow-upsAdminLow
13Competitor monitorChecks named sites weekly, summarises changes, flags price movesMarketingLow
14Content repurposerTurns one article into a newsletter, posts and a summary for approvalMarketingLow
15SEO monitorWatches rankings and errors, drafts the fix listMarketingLow
16CV screenerScores applications against a written brief, drafts the shortlistRecruitmentHigh: human decides; UK GDPR 22A-22D
17Onboarding checklistIssues accounts, schedules training, chases missing documentsHRMedium
18Policy Q&AAnswers staff questions from the handbook, escalates the restHRLow
19Stock reorderWatches levels and lead times, drafts purchase ordersOperationsMedium: human approves spend
20Supplier chaserTracks deliveries, chases late ones, updates the trackerOperationsLow
21Research briefSearches dozens of sources, cross-checks, writes a cited summaryEveryoneLow
22Document summariserSummarises long PDFs and contracts, pulls out dates and dutiesEveryoneLow
23Coding agentWrites, runs, tests and fixes code in a repositoryEngineeringLow, inside version control
24Site monitorChecks uptime and errors, opens tickets, drafts the fixEngineeringLow
25Form fillerCompletes repetitive web forms from your dataEveryoneMedium: fragile; human on payment
Grid of eight departments with the AI agent jobs most often automated in each: finance, customer service, sales, admin, marketing, recruitment, operations and engineering
Where the 25 examples sit. Finance and admin carry the most low-risk jobs.

What do the good examples have in common?

  • They repeat. An agent earns its setup time on the hundredth run, not the first.
  • The rules can be written down. If you could brief a temp in a page, you can brief an agent.
  • The output is checkable. A draft, a list, a reconciled ledger. You can see whether it is right in seconds.
  • A mistake is cheap. An awkward reminder, a mis-filed receipt. Not a lost customer or a legal claim.
  • The tools are narrow. Read the ledger and send email; not "everything on the shared drive".

Anthropic's guidance for builders says the same from the other side: find the simplest solution possible and add complexity only when needed, because agents trade cost and speed for flexibility. Most of the 25 above are better built as workflows with AI steps than as fully autonomous agents, at least to begin with. The difference is explained in What is agentic AI?

Which examples should you avoid as a first agent?

  • CV screening and anything deciding about people. UK GDPR Articles 22A-22D require safeguards and meaningful human involvement for solely automated significant decisions, and the ICO's 2026 recruitment report found employers routinely underestimating when a tool was deciding. Fine as a shortlist drafter with a human decision-maker; not as a first project.
  • Payments and purchasing without a cap. Agents can be manipulated by content they read. Put a spend limit and an approval step on every one.
  • Open-ended "run my business" agents. Long, multi-judgement tasks are where agents drift. Gartner expects more than 40% of agentic projects to be cancelled by the end of 2027; the vague ones go first.
  • Anything that speaks for you to people who matter without approval. Build trust on low-stakes contacts first.

Frequently asked questions

What are some examples of AI agents?

Invoice-chasing agents, support-inbox triage agents, lead-qualification agents, meeting-prep agents, research agents, bank-reconciliation agents, CV-screening agents and coding agents such as Claude Code and Codex. This page lists 25 across eight departments.

What is the most successful use of AI agents so far?

Coding. Agents that write, run, test and fix code are in daily use at most software teams and proved the techniques now used elsewhere.

What is a good first AI agent for a small business?

Invoice reminders. The job repeats, the rules are clear, the agent's work is easy to check, and a mistake is a slightly awkward email rather than a lost customer.

Can AI agents replace employees?

In UK small firms the evidence so far says no: 95% of SMEs using AI report no impact on headcount, and most say it supports staff. Agents remove repetitive hours, not roles, at least today.

Are these examples real or hypothetical?

All 25 are jobs that commercially available tools do today. Where a job still needs a human on every step, the entry says so. For the newest tools, see the best new AI agents on Product Hunt, each rated for UK users.

Next: build the number one example with How to set up an invoice-chasing AI agent.

Sources

About the author

Annie has spent twenty years in search, lead generation and ad tech, on the agency, client and publisher side, and has worked in growth for an AI agent platform. She writes aiagents.org.uk independently: no AI vendor pays for coverage. More about Annie · How guides are made · LinkedIn

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