Narmi MCP Server
Narmi launched the first Model Context Protocol (MCP) server deployed by a U.S. bank — in partnership with Grasshopper Bank in August 2025 — enabling business banking customers to query their financial data through LLMs including Claude and ChatGPT under OAuth 2.0-permissioned access. The MCP server is deployed per financial institution as part of Narmi AI / Narmi Open rather than as a single public hosted endpoint, so there is no global MCP URL to advertise. Access is gated by the same OAuth 2.0 authorization-code scopes as the Public API (banking:accounts:read, banking:transactions:read, etc.), and all agentic workflows ship with human approval checkpoints, full audit trails, and bank-grade security. Models used do not train on institutional data.
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Documentation
Documentation link · transport http
Tools
list_account_balances— List the authenticated user's account balances.list_accounts— List the authenticated user's accounts.list_transactions— List transactions for an account.get_me— Retrieve the authenticated user profile.
About MCP
The Model Context Protocol (MCP) is an open protocol Anthropic introduced for connecting LLM-based agents to external tools and data sources. Providers publish MCP servers that expose their API surface as structured, discoverable tools — an MCP-compatible client (Claude Desktop, Cursor, Cline, Continue, etc.) can connect to the server and call its tools without any per-provider integration code.
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