Number provides powerful and flexible payment solutions, supported by extensive technical documentation for developers. However, navigating this vast library of information could be time-consuming, creating friction for developers during the integration process. As a proactive initiative, we designed and built the Number AI Assistant—a conversational AI embedded directly within their docs. This tool gives developers instant, accurate answers and code snippets, dramatically speeding up integration cycles and simplifying complex technical challenges.

Ensuring 100% Factual Accuracy:
For a payments provider, providing incorrect integration advice is not an option. The primary challenge was to eliminate the risk of AI "hallucinations" and guarantee every answer was reliable, verifiable, and sourced directly from the official documentation.
‍
Customizing a Pre-Built Solution:
To meet the rapid timeline, we utilized a pre-built Azure RAG tool. However, its default UI was generic and clashed with Number's modern brand identity. The challenge was to completely redesign the assistant to create a seamless, on-brand user experience.

Accelerating, Not Just Answering:
A simple Q&A bot isn't enough to significantly speed up development. The assistant needed to go beyond text answers and actively accelerate the integration process by providing ready-to-use code snippets and clear pathways to deeper information.

Robust Prompt Engineering & Source Linking:
We implemented a rigorous prompt engineering strategy to constrain the AI's responses strictly to the source documentation. Crucially, every answer generated by the assistant includes linked citations, allowing developers to instantly click through to the source page to verify the information and build essential trust.

Custom Front-End Design & Styling:
Our designer and developer worked in tandem to apply a custom front-end layer over the Azure tool. We meticulously implemented Number's design system—including typography, colors, and interface elements—to make the AI assistant feel like a native, fully integrated part of their developer portal.

Actionable Code Snippets & Seamless Navigation:
The AI was trained to identify when a code example is needed and can paste formatted code snippets directly into the chat. Combined with source links that open in new browser tabs, this allows developers to get what they need and dive deeper without losing their place, dramatically improving the developer experience.