Wintrust Financial

Wintrust Treasury Management API Banking (SFTP)

Wintrust's commercial "API banking" for treasury clients. Rather than a documented REST API, Wintrust connects business customers directly to its secure file transfer protocol (SFTP) for account balance and activity reporting, payment file exchange (Positive Pay, ACH/NACHA, domestic and international wires, EDI, lockbox) and data-format translation (CSV to NACHA, EDI 820, TXT, BAI2). Delivered through the i-BusinessBanking treasury platform; no public OpenAPI specification, sandbox or self-serve developer portal is published — access is arranged through Treasury Management onboarding.

GitHub

Documentation

📖
Documentation
https://www.wintrust.com/financial-education/2021/03/in-the-vault-with-treasury-management-focus-on-banking-technology.html
📖
Documentation
https://www.wintrustbank.com/commercial/resources/treasury-management/payables.html
📖
Documentation
https://www.wintrustbank.com/commercial/resources/treasury-management/receivables.html

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/wintrust-financial/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/wintrust-treasury-api-banking"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: wintrust-financial:wintrust-treasury-api-banking
name: Wintrust Treasury Management API Banking (SFTP)
tags:
- Treasury Management
- Commercial Banking
- Payments
- File Transfer
- United States
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://www.wintrust.com/business-solutions/mid-market/banking/treasury-management.html
properties:
- type: Documentation
  url: https://www.wintrust.com/financial-education/2021/03/in-the-vault-with-treasury-management-focus-on-banking-technology.html
- type: Documentation
  url: https://www.wintrustbank.com/commercial/resources/treasury-management/payables.html
- type: Documentation
  url: https://www.wintrustbank.com/commercial/resources/treasury-management/receivables.html
description: Wintrust's commercial "API banking" for treasury clients. Rather than a documented REST API,
  Wintrust connects business customers directly to its secure file transfer protocol (SFTP) for account
  balance and activity reporting, payment file exchange (Positive Pay, ACH/NACHA, domestic and international
  wires, EDI, lockbox) and data-format translation (CSV to NACHA, EDI 820, TXT, BAI2). Delivered through
  the i-BusinessBanking treasury platform; no public OpenAPI specification, sandbox or self-serve developer
  portal is published — access is arranged through Treasury Management onboarding.