A bank routing ZIP search API in Python posts a US ZIP and reads matching ABA numbers. On BankDataStack that is POST /api/v1/routing/database/zip with X-API-Key. Official docs curl uses 10005.
Starter is $49.99/mo with a 7-day trial. No live MCP host. Docs: bankdatastack.com/docs.
Request: official ZIP 10005
curl -X POST https://www.bankdatastack.com/api/v1/routing/database/zip \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"zip":"10005"}' Python: same contract
import json, os, urllib.request
req = urllib.request.Request(
"https://www.bankdatastack.com/api/v1/routing/database/zip",
data=json.dumps({"zip": "10005"}).encode(),
headers={"X-API-Key": os.environ["BANKDATA_KEY"], "Content-Type": "application/json"},
)
print(urllib.request.urlopen(req).read().decode())The documented lookup object on this family is routing 113110984 with zip 75835 — that row is the sibling sample, not a 10005 dump invented here. Copy the 10005 curl for today’s list.
Go live
1. Register — 7-day trial.
2. Copy the X-API-Key.
3. POST /api/v1/routing/database/zip with 10005.
4. Store routing numbers from the live list.
