bank2ai 0.6.1

Helpers for banks building MCP servers, shared bank2ai tool surface, models, and auth middleware

bank2ai

The open standard for AI driven banking.

The language of banking is universal (accounts, transactions, transfers, bill payments, recipients, loans, savings) and bank2ai codifies that language as a Model Context Protocol tool surface. Once a bank speaks bank2ai, any compliant AI client can read accounts, look up recipients, run spending summaries, and prepare/execute transfers, using the same vocabulary across every bank.

📖 Full documentation: bank2ai.com 📦 Specification: specs/ 🛒 Marketplace: github.com/bank2ai/marketplace

Stewarded by Bancony

bank2ai is freely usable by any bank or fintech. Its development is stewarded by Bancony, which also builds commercial implementations on top of the standard alongside other vendors and in-house teams. See Commercial implementations for the current list.

Install

uv add bank2ai

Quickstart

from fastmcp import FastMCP
from bank2ai import register_tools

app = FastMCP("my-bank")

# Every handler is optional, pass only the tools you've implemented.
register_tools(
    app,
    get_accounts=...,
    get_categories=...,
    # get_transactions=..., get_transaction=..., get_transactions_summary=...,
    # get_recipients=..., create_recipient=...,
    # prepare_transfer=..., execute_transfer=...,
)

Walk through a full example in the Quickstart guide.

What's in this repo

Path	Contents
src/bank2ai/	The Python library (bank2ai on PyPI), Pydantic models + the register_tools MCP wiring.
specs/	Language-neutral specification, bank2ai.spec.md (narrative) and bank2ai.json (JSON Schemas).
examples/demo/	Reference MCP server backed by hardcoded data.
docs/	Source for bank2ai.com.

Contributing

Issues and PRs welcome at github.com/bank2ai/bank2ai. For anything that touches the spec, please open an issue first, see Contributing.

License

Apache 2.0, see LICENSE.