Here's the short version: any API key on your Binance account that you no longer use should be deleted immediately — a long-forgotten, idle API is the single biggest security blind spot in most accounts. Deleting one only takes about 2 minutes: go to "API Management" and tap "Delete," which requires both email and 2FA verification. Everyone should audit their API list once every 3 months. Start on the Binance Official Site and go to API Management; mobile users can follow the same path in the Official Binance App; iPhone users should check the iOS Install Guide first to get the app installed.
Plenty of people create an API key, use it once, and then forget about it entirely — until the day they discover their account has been drained, and looking back they realize an API key created three years ago for a trading bot is still active, and the computer that ran that bot got infected with malware ages ago. This article explains why you should delete unused API keys, how to do it, and how to stop them from piling up again afterward.
An API key is essentially a "spare key" to your account, but compared to a password it has a few traits that make it especially risky:
Trait one: it doesn't require 2FA by default
Every normal login requires 2FA, but once an API call is set up, it stays valid indefinitely and doesn't require 2FA on every call.
Trait two: it can be called at high frequency
APIs are designed for bots that run 24/7. A single second can submit dozens of orders — if a hacker gets hold of one, they can drain an account almost instantly.
Trait three: users forget about them easily
The note you jot down when creating an API key is often something vague, and a few months later you've completely forgotten what it was even for.
Trait four: third-party platforms are a common leak point
API keys often get copied into third-party platforms — quant trading platforms, grid bots, market-data subscriptions. If any of those platforms gets breached, your API key ends up in the attacker's hands too.
Open binance.com, log in, and go to your avatar in the top-right → "Account" → "API Management" in the left menu.
App users: tap your avatar in the top-left → "API Management."
The page lists every API key currently on your account, with each entry showing:
Go through each API key one by one and ask yourself three questions:
Question one: is this API still actually in use?
Check "last call time." Anything with no calls in over 30 days has most likely been forgotten.
Question two: who was this API originally created for?
If you genuinely can't remember, treat it as high-risk and delete it. If you recall it was for a specific quant platform or grid bot, confirm you're still actively using that platform.
Question three: are this API's permissions excessive?
If the permissions include "Withdrawals" or "Internal Transfer" but the actual use case (say, market data subscription) doesn't need them at all, either delete the key or edit it to tighten the permissions.
After going through all three checks, you'll end up with a clear list of API keys to delete.
For each API you're deleting:
The deletion takes effect immediately — from that moment on, the deleted key is invalidated on Binance's servers, and any request using it will return an "invalid API" error.
If the API you're deleting is currently active on a third-party platform, that platform's strategy or bot will fail the instant you delete it.
The correct order of operations:
Note: many third-party platforms are slow to detect an "API expired/invalid" state, so they won't notice right away once Binance deletes the key, and their bot will just keep throwing errors. That's why pausing the strategy first, then deleting the API, is the safer order.
Binance sends a confirmation email once an API is deleted, stating the API's name and the deletion time. Keep that email — it's useful evidence if a security dispute ever comes up later.
| Step | Action | Time needed | Verification |
|---|---|---|---|
| 1 | Open API Management page | 30 seconds | Already logged in |
| 2 | Audit each API's purpose | 5-10 minutes | Self-review |
| 3 | Tap Delete | 1 minute | Email + 2FA |
| 4 | Notify third-party platforms | 5 minutes | Done on the platform side |
| 5 | Save the confirmation email | 30 seconds | Email archive |
Some API keys are actively in use and can't be deleted, but their permissions are too broad and need to be scaled back.
How to do it:
Once permissions are reduced, even if this API is stolen, the attacker can only do limited damage — at most check market data or place a limit order, but never withdraw or transfer funds.
| Permission | Risk level | Note |
|---|---|---|
| Read market data | Low | No fund risk whatsoever |
| Spot trading | Medium | Can place orders but not withdraw, though it can be used to "wash trade" |
| Futures trading | High | Can open positions and trigger liquidations, losing funds |
| Withdrawals | Extreme | Can move assets out directly |
| Internal transfer | High | Can transfer to sub-accounts or other Binance accounts |
| Fiat | Medium | Can do P2P operations, but has risk controls |
| Margin lending | High | Can borrow and drain assets |
Every newly created API should default to only "Read" and "Spot Trading" — never check "Withdrawals" by default.
Habit one: write a clear label when creating an API
Don't write "test1" or "abc." Write something like "2026-04-25, for 3Commas quant platform - BTC spot only." Six months later, you'll still know exactly what it was for.
Habit two: set an expiration date
Binance supports setting an expiration date on API keys. The default is 90 days, after which it auto-expires. For short-term testing, set it even shorter — like 7 days.
Habit three: audit regularly
Pull up your full API list every 3 months. Delete anything unused, and reduce permissions on anything too broad.
Habit four: separate APIs by sub-account
If you're an institution or run multiple strategies, create sub-accounts and issue a separate API for each one, so the main account's assets stay isolated. If a sub-account is compromised, the main account's assets aren't affected.
Habit five: always turn on an IP whitelist
Only allow calls from specific server IPs — even if a hacker gets the key, it's useless if their IP isn't on the whitelist.
If you're creating a new API after deleting an old one, follow this standard:
Following this standard caps the potential damage if the new API is ever compromised.
No. API deletion is permanent. Even if you change your mind, Binance support cannot "restore" a deleted API. If you need the same functionality again, you'll have to create a brand-new one.
A newly created API key and secret will always be different from the old one, so any third-party platform will need to be reconfigured with the new credentials.
Q: How long does it take for a deleted API to take effect? A: Immediately. The instant you submit the "Delete" action, requests using that key start getting rejected by Binance.
Q: Will deleting an API affect the assets in my account? A: No. An API is just an access channel — your assets stay in your account and aren't affected by it. Deleting an API simply closes one access path.
Q: My bot stopped working after I deleted the API — can I just create a new one? A: Yes, you can create a new one. But it's worth asking whether you actually still need that bot, and whether its permissions were set too broad in the first place.
Q: If my API gets stolen, is it still worth deleting it? A: It depends on how quickly you discover it. If it's stolen, deleting it immediately and moving your assets out right away is the best response. But hackers who get an API key typically start acting within minutes, which is why prevention matters more than remediation.
Q: If I delete one API, should I redo a full security check on the whole account? A: Yes, that's recommended. Deleting an API only closes one door — you should also confirm the other doors (password, 2FA, whitelist) are all secure.
Q: Does Binance automatically clean up idle API keys every month? A: No, it doesn't clean them up automatically. Binance only disables an API once it passes the expiration date you set. An API set to never expire (the old default) will stay active indefinitely.
Q: Can a single API have multiple IPs on its whitelist? A: Yes. Binance's API IP whitelist supports multiple IPs (generally up to 10-20), separated by line breaks or commas.
Q: What's the difference between the API Key and the Secret Key? A: The API Key is a public identifier (like a username), while the Secret Key is the signing key (like a password). Both need to be leaked together for real damage to occur. Leaking the API Key alone isn't a huge problem, but the Secret Key must always stay confidential.
Go check your API Management page right now and see how many keys you have. If there are more than 3 and you can't remember what each one is for, delete the ones you don't use today.