First Internet Bank plugs accounts into ChatGPT and Claude via MCP

The $5.7bn branchless lender bets banking's future is a data layer, not a destination, by opening accounts to LLMs.

By Disrupts Editorial Team Mon, 10 August 2026

A modern control room features a curved desk with multiple blank monitors, white panel walls, and bright overhead lighting from linear panels and circular spotlights, with two doorways visible on the side walls.

First Internet Bank, a $5.7 billion branchless lender headquartered in Fishers, Indiana, has launched a Model Context Protocol (MCP) integration that allows personal and business customers to connect their checking, savings and money market accounts directly to OpenAI's ChatGPT and Anthropic's Claude. The move positions the bank less as a financial institution and more as a data infrastructure layer sitting beneath the AI assistants customers already use daily.

The integration is read-only and permissioned: customers decide which account information is shared, and the AI assistants can query balances, cash flow, spending patterns and account activity but cannot move funds, initiate transactions or alter account settings. Crucially, the bank says customer data is not used to train AI models, a privacy assurance likely to matter as regulators in both the US and EU sharpen their scrutiny of financial data flows into foundation-model pipelines.

Banking as infrastructure

The strategic framing from CEO David Becker is notable. "The winners in banking will be the institutions making their data usable wherever customers already are," he has said publicly, and the MCP launch is a direct expression of that thesis. Rather than building a proprietary AI chatbot inside the bank's own app, the route most incumbents have taken, First Internet Bank is inverting the model, embedding itself into third-party AI environments. The bank becomes infrastructure; the AI assistant becomes the interface.

This is a meaningful architectural bet. MCP, the open protocol developed by Anthropic and now supported across multiple AI platforms, is emerging as a standard for connecting external data sources to large language models (LLMs). By adopting it early, First Internet Bank is aligning with a connectivity layer that larger institutions, and potentially core-banking software vendors, will face pressure to support.

The small-business gap and broader capital implications

The bank's own research adds texture to the demand case. According to its Do More Business Report, four in ten small business owners currently use no AI tools whatsoever, yet 40% say they would be interested in banking products delivering personalised financial or borrowing insights. That gap, between stated appetite and actual adoption, is precisely the market First Internet Bank is targeting with natural-language queries: a business owner asking whether cash on hand covers next week's payroll, rather than building a spreadsheet model.

The convergence angle for cross-sector strategists is wider than it first appears. The MCP standard is becoming the connective tissue between enterprise AI deployments and the data systems those deployments need to be useful. Banks that expose account data via MCP become nodes in an agentic-AI ecosystem where financial context can inform decisions across payroll software, procurement platforms and treasury management tools. Conversely, banks that do not move in this direction risk being disintermediated, their data locked inside legacy interfaces while AI assistants trained on richer, more accessible data sources become the default financial advisor for SMEs.

Investor interest in this infrastructure layer is building. Embedded-finance and open-banking startups have attracted significant venture capital over the past three years, and the MCP moment represents a second wave: not just connecting bank accounts to fintech apps, but connecting them to general-purpose AI reasoning engines. For sovereign and institutional capital already deployed into AI infrastructure, GPU clusters, foundation-model labs, enterprise software, the bank-as-data-layer thesis suggests a new adjacency worth watching.

First Internet Bank's launch is available now for Claude Pro, Max, Team and Enterprise plan users, and for ChatGPT Pro, Business and Enterprise subscribers. Whether larger US retail banks, which have generally pursued walled-garden AI strategies, respond with competing MCP integrations or attempt to block the standard's adoption in regulated contexts will be an early signal of how the industry's infrastructure battle lines are forming.