No.

Get your API credentials from Kalshi

  1. 01Log in to app.kalshi.com
  2. 02Go to Account → API Access
  3. 03Click "Create API Key" - download the .pem file
  4. 04Paste the Key ID and .pem contents below
▸ How your private key is handled
  • ·Stored only in server RAM - no database, no disk writes, no logs.
  • ·Never transmitted beyond this server to any third party.
  • ·Used for one purpose: signing Kalshi API requests with RSA-PSS.
  • ·Erased on logout or server restart - we can't access it after either.

The relevant server-side code, verbatim:

# sessions.py - key lives in a plain dict, nothing else
class SessionStore:
    def __init__(self):
        self._sessions: dict[str, UserSession] = {}

# signing.py - the only thing done with your key
def auth_headers(private_key, key_id, method, path):
    msg = (timestamp_ms + method + path).encode()
    sig = private_key.sign(msg, PSS(...), SHA256())
    return {"KALSHI-ACCESS-KEY": key_id,
            "KALSHI-ACCESS-TIMESTAMP": timestamp_ms,
            "KALSHI-ACCESS-SIGNATURE": base64(sig)}

Full source: sessions.py · signing.py