One year in, Newline™ by Fifth Third is driving embedded finance forward with fintech energy, bold innovation, and a client-first mindset.
Elevating the Developer Experience with AI-Enabled Dev Docs & MCP Tools
Discover how Newline™ by Fifth Third is using AI-driven upgrades to help streamline workflows, reduce build time and future-proof development efforts.
Newline™ by Fifth Third is leveling up our developer experience with a powerful suite of new tools. These AI-focused upgrades are designed to streamline workflows, reduce build time and future-proof development efforts. The enhancements mark a significant leap forward in how developers interact with documentation and get started with our APIs.
Model Context Protocol (MCP)
The Newline Model Context Protocol (MCP) Server provides a unified interface for AI agents to interact with Newline’s APIs in a secure, standardized way. It’s designed to make integration easier and provide context-aware interactions for developers when building with Newline.
What is MCP?
MCP is an open protocol that allows AI tools—like Claude or GitHub Copilot—to access documentation and APIs in a structured, reliable manner. By using MCP, developers can reduce manual steps and improve automation when working with Newline services.
Key Features
- Simplifies integration with Newline APIs and tools.
- Secure and standardized access for AI-driven workflows.
- Ships with 35+ tools to help you build faster and troubleshoot less.
- Native support for AI Agents (Claude, Github Copilot, and more).
- More time building – less time troubleshooting!
Example Use Case:
You ask: Claude, I need to build a wallet integration for RTP payouts
Claude:
- Retrieves your account configuration and available accounts
- Creates a code snippet in your language of choice to create the integration
- Asks if you’d like to create a new ‘rtp-enabled account’ or use an existing one
- Creates the wallet integration in your existing codebase
Newline is live on GitHub!
Developers and partners can now access the MCP directly from the Newline GitHub repository. Whether you're building integrations, customizing experiences, or exploring new capabilities, everything you need is now just a clone away.
Visit the Newline GitHub repo to get started.
AI-Enabled Dev Docs Upgrade
We upgraded our developer docs, bringing the best of new AI capabilities to life for you.
- AI Conversational Search – Developers can now ask questions in natural language and receive instant, context-aware answers—including code snippets and integration guidance—directly within the documentation interface.
- SmartDocs – Documentation is always up to date, structured for AI compatibility and automatically synced across tools via the new LLM.txt protocol. This ensures consistency and reliability across the development ecosystem.
- Ask AI – A built-in dropdown menu allows users to select trusted AI tools like ChatGPT or Copilot for real-time, contextual assistance—right where they need it.
Why Newline?
Newline™ by Fifth Third is once again leading the charge in innovation, building tools that transform businesses' banking and payments experiences. We’re entering a new era of agentic, AI-powered development—making it easier than ever for developers to build, integrate and innovate.
Related Resources
Newline™ by Fifth Third is redefining fintech partnerships—offering clients the strength of a top bank and the agility to scale bold, innovative solutions.
The Newline team is happy to announce the launch of Virtual Reference Numbers (VRNs), a solution that enables organizations to track and reconcile inbound payments using configurable account aliases.
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