Routing Number Lookup — ABA/ACH Bank Routing Validation

Created By
easysolutions9063 months ago
Look up and validate US bank routing numbers. ABA checksum validation, search by bank name or state. Used by payroll, ACH, and payment platforms.
Overview

MCP Routing Number Server

A Model Context Protocol (MCP) server for looking up, searching, and validating ABA routing numbers from the Federal Reserve FedACH directory.

Tools (3 total)

ToolDescription
routing_lookupLook up a bank by its 9-digit ABA routing number
routing_searchSearch institutions by name, city, or state
routing_validateValidate an ABA routing number checksum (weights 3,7,1)

Install

npx @easysolutions906/mcp-routing

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "routing": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/mcp-routing"]
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "routing": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/mcp-routing"]
    }
  }
}

REST API

Set PORT env var to run as an HTTP server.

  • GET /lookup?routing=021000021 -- look up by routing number
  • GET /search?name=chase&state=NY -- search by name, city, or state
  • GET /validate?routing=021000021 -- validate routing number checksum
  • POST /lookup/batch -- batch lookup multiple routing numbers
  • GET /stats -- institution counts by state

Data Source

FedACH directory from the Federal Reserve. Run npm run build-data to download and regenerate. Falls back to bundled data if the download is unavailable.

Transport

  • stdio (default) -- for local use with Claude Desktop and Cursor
  • HTTP -- set PORT env var to start in Streamable HTTP mode on /mcp

Server Config

{
  "mcpServers": {
    "routing": {
      "command": "npx",
      "args": [
        "-y",
        "@easysolutions906/mcp-routing"
      ]
    }
  }
}
Project Info
Created At
3 months ago
Updated At
3 months ago
Author Name
easysolutions906
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