Demystifying AI Agents: Their Inner Workings

Picture this: You’re at your local bank, trying to get a loan for your dream home. Just a decade ago, you’d sit across from a loan officer who would manually review your application, credit history, and financial records before making a decision that could take days or weeks. Today, that entire process might be handled by an invisible digital worker – an AI agent – in a matter of minutes. But what exactly are these AI agents that are quietly revolutionising our financial world? And why should you care?

At their core, AI agents are sophisticated software programs designed to perform specific tasks without constant human supervision. Think of them as diligent digital assistants who never sleep, never get bored, and improve at their jobs over time.

Let’s break down how they actually function: AI agents use their own perception systems to gather information from their environment. These aren’t physical sensors but data collection mechanisms in the digital realm. For example, an AI agent might simultaneously monitor real-time transaction data, market feeds, customer interactions, and regulatory updates. This multi-source data collection gives the agent a comprehensive view of its operational environment.

Once collected, this information needs to be organised in a way the AI can understand. Modern AI agents use complex data structures called neural networks that roughly mimic how our brains organise information. These networks allow the agent to recognise patterns and make connections between seemingly unrelated pieces of information. Then, AI agents employ various reasoning methods:

  • Rule-based reasoning follows explicit “if-then” logic (if a customer has over €100,000 in assets, then classify them as a premium client).
  • Statistical reasoning calculates probabilities based on historical data.
  • Case-based reasoning looks at similar past situations and their outcomes.

But what makes AI agents truly powerful is their ability to improve over time. This happens through several approaches:

  • Supervised learning, where the agent is trained on labelled examples (such as “this transaction was fraudulent” vs “this transaction was legitimate”).
  • Reinforcement learning, where the agent learns through trial and error, receiving rewards for successful actions.
  • Unsupervised learning, where the agent discovers patterns in data without explicit guidance.

Based on their reasoning and learning, AI agents make decisions. In banking, these might range from straightforward choices (approve/deny a standard transaction) to complex recommendations (suggest portfolio rebalancing strategies).

In the last step of the process, the agent takes action based on its decisions. This could be direct (executing a trade) or indirect (alerting a human analyst to a potential risk). What makes modern AI agents different from traditional software is their adaptability. Rather than following rigid, predefined paths, they can respond to new situations based on their learning and reasoning capabilities.

 

Real-World Banking Applications

We’re specifically focusing on developing AI agents for critical banking functions that have traditionally required extensive human expertise and time. Here are some concrete examples of how we’re applying this technology in our RiskZ platform:

Fair/Prudent Value Adjustments: Banks must maintain certain provisions to meet regulatory requirements while still operating profitable market activities. This balancing act is incredibly complex, involving thousands of variables and ever-changing conditions.

Our AI agents retrieve all position sensitivities, manage eligible hedging instruments and strategies with their exit costs and performs a complex optimization process to generate the optimal replicating portfolio, neutralizing all risk factor exposures at best exit costs.

They produce automatic reports, ranging from the daily analysis of amounts (top risk & book contributors, daily variation explain, etc.) to stress tests and specific alert reports (breach of parametrized threshold with detailed analysis), which are sent to dedicated teams.

Analysts can interact with the process using their own business terms and perform deep dive or what-if analysis (e.g. bump sensitivities of a given book), getting instant conclusions with graphs and figures, without performing any technical action (such as a complex SQL request).

Reasoning steps can be monitored in real time, in clear language that risk managers can easily understand and override in necessary, all being stored in an audit trail.

P&L Explain: Understanding the factors driving P&L variations is critical in Risk management, but traditionally, this analysis has been time-consuming and often incomplete.

AI agents can tackle this challenge by analysing thousands of variables simultaneously to identify the true drivers of P&L variations. Agents can break down exactly how much of that change was due to some specific risk factor (a change in the volatility skew of some specific underlying), probing external data sources to provide contextual reasons (e.g. economic news, report surveys, etc.).

But more importantly, they can also zoom-out and provide the true general drivers (e.g. an upward shift of volatility in some industrial sector/geographic area) and disentangle Market factors and idiosyncratic ones, providing a clear picture of daily P&L variations, with contextual adaptation and automatic alert reports.

The latest is a notoriously difficult task in Risk Management and daily requires dozens of analysts to perform top-down analyses, with no fully deterministic process (the overall workflow graph being too complex for combinatory reasons). Automating such tasks with AI not only strongly reduces operational costs and risks but also allows instant reactivity.

 

Why Finance and AI Are Perfect Partners

The financial sector has always been data-driven, making it particularly well-suited for AI adoption. Consider all these real-world applications that are already transforming the industry. Investment firms now use AI agents to analyse market conditions and execute trades in milliseconds. These agents can process news events, earnings reports, and market movements simultaneously, identifying opportunities that human traders might miss due to information overload.

Traditional fraud detection systems often generate numerous false positives, flagging legitimate transactions as suspicious and causing unnecessary hassle for customers. AI agents can analyse hundreds of factors in real-time to more accurately identify truly fraudulent activity, reducing false alarms by up to 60%, according to recent industry studies.

Furthermore, AI agents can assess creditworthiness using a wider range of factors than traditional methods, potentially opening up financial opportunities for underserved populations and reducing risk for lenders. And they can do it in minutes rather than days.

 

The Human-AI Partnership in Banking

It’s important to note that we mustn’t see AI agents replacing human bankers and analysts. Rather, we’re targeting a powerful partnership where each contributes their unique strengths. AI agents bring remarkable capabilities to the table that complement human expertise in profound ways. They excel at processing enormous datasets without experiencing fatigue or diminishing performance, even when working around the clock.

This tireless data processing allows them to identify subtle patterns and correlations that might escape even the most experienced human analyst simply due to the volume and complexity of information involved. Furthermore, AI agents perform analysis with remarkable consistency, free from the cognitive biases that can unconsciously influence human decision-making. They maintain the same level of attention to detail whether it’s their first task of the day or their thousandth.

Human bankers, meanwhile, contribute equally valuable but fundamentally different strengths to this partnership. They possess an unmatched ability to understand broader context and nuance, particularly in situations involving complex human factors or unprecedented circumstances. When ethical judgments are required or exceptions to standard procedures need consideration, human intuition and values-based reasoning become essential.

Perhaps most importantly, human bankers excel at building meaningful relationships with clients and colleagues, bringing emotional intelligence and empathy to interactions that AI simply cannot replicate. The creative problem solving and intuitive leaps that come naturally to experienced professionals provide the spark of innovation that complements the computational power of AI. The most successful implementations we’ve seen maintain this balance, using AI agents to enhance human capabilities rather than replace them.

 

The Road Ahead: Challenges and Opportunities

As we continue automating processes and developing AI agents, we’re mindful of both the tremendous potential and the significant responsibilities that come with this technology. Transparency, accountability, and fairness are central to our approach. The most powerful AI systems are those that augment human capabilities rather than replace them, the goal being to design agents to handle the computational heavy lifting while keeping humans in the loop for judgment calls and ethical considerations.

For financial institutions looking to remain competitive in the coming decade, thoughtful integration of AI agents isn’t just an option, it’s increasingly a necessity. Those who embrace these technologies wisely will be rewarded with greater efficiency, improved customer experiences, and new capabilities that were previously unimaginable.

And for consumers? The future promises financial services that are more personalised, accessible, and secure than ever before. The invisible digital workers behind the scenes are already transforming how we save, invest, borrow, and plan for our futures, often in ways we don’t even notice.

As we continue this journey together, we’re committed to demystifying AI and ensuring that these powerful tools serve the needs of all stakeholders in the financial system. Because ultimately, the most successful AI agents will be the ones that help humans achieve their goals more effectively, not those that simply automate existing processes.