Nymbus Launches One of the First Secure MCP Servers Built for Core Banking
"AI creates real value in banking when it helps institutions get work done, not just generate answers."
Nymbus, a modern banking platform for US banks and credit unions, announced on April 9 the launch of the Nymbus MCP Server, one of the first Model Context Protocol servers purpose-made for core banking.
The server gives financial institutions a secure, standardized way to connect AI-powered experiences to core banking functions through a single interface, without requiring custom integrations for each AI tool or use case, according to the press release.
The server is designed for front-office banking operations and currently provides 19 tools that enable AI assistants to support common banking actions including customer lookup, account management, money movement, and debit card controls.
It translates banking capabilities into a format AI agents can use to call approved core functions through a large language model, while Nymbus manages the underlying complexity.
Nymbus said that a member service agent using an AI assistant can verify a customer, review account details, and initiate an approved workflow such as a debit card freeze through a single conversational interface, without switching between systems.
Similar workflows can support fraud investigation, case handling, and operational follow-up, reducing manual effort while keeping employees in control of the work, according to the press release.
Financial institutions determine which tools are enabled, which user roles can access them, and where additional review or approval is required. That granularity allows institutions to start with specific use cases and expand within institution-defined guardrails over time.
"AI creates real value in banking when it helps institutions get work done, not just generate answers," said Jeffery Kendall, Chairman and CEO of Nymbus. "With the Nymbus MCP Server, we are giving banks and credit unions a practical way to put AI into everyday workflows while maintaining the control, consistency, and accountability they need to operate with confidence."
The server is built on the open MCP standard and Nymbus's open integration architecture. Where legacy cores typically require custom integrations for each AI tool, the Nymbus MCP Server provides a single standardized connection layer, allowing institutions to scale AI-assisted workflows more consistently across internal channels and teams.
Security is built into the architecture. The server includes token-based authentication, role-based access controls, PII masking in logs, encrypted connections, and full audit logging.
Those capabilities are designed to support the security, access, and recordkeeping requirements associated with banking compliance programs, according to the press release.
"Financial institutions are looking at AI as a way to improve service, strengthen operations, and create competitive advantage, but they need a practical path to do that responsibly," said Matthew Terry, Chief Technology Officer at Nymbus.
He said that the Nymbus MCP Server helps banks and credit unions augment existing processes with AI-assisted workflows that can speed up research, reduce manual effort, and support better decisions, while giving each institution granular control over what is enabled, how it is used, and where governance and auditability are required.
Because the server is built on the open MCP standard, Nymbus said it also creates a foundation for future agentic banking experiences where AI can move beyond answering questions to coordinating tasks across systems within institution-defined controls, according to the press release.