What Is an API Key? How Automated Trading Works on an Exchange
An API key lets a program trade on your behalf without a password. Here's what it is, what permissions to grant, and how to keep one secure.
Beyond the standard login most people use, exchanges like Bitval also offer a second way in: an API key, built for programs rather than people.
What an API Key Is
An API key is a pair of codes, a key and a secret, that lets a program interact directly with an exchange's systems without logging in through the standard interface. Instead of a username and password, a trading bot or script authenticates using this key pair, which the exchange checks against permissions set up in advance. This is what makes automated trading strategies possible: a program can place and manage orders continuously without a person clicking through a website.
What Automated Trading Uses It For
Once connected through an API key, a program can read market data, place and cancel orders, and check account balances, all programmatically. This is how algorithmic trading strategies run: a script watches price data and executes trades based on predefined rules, faster and more consistently than a person manually placing each order. The same connection also powers portfolio tracking tools and tax software that need to read trade history automatically.
Permission Scopes Matter
A well-designed API key system lets you limit what the key can do. Read-only permissions allow a program to view balances and history without being able to place trades or move funds. Trading permissions allow placing and managing orders but not withdrawals. Withdrawal permissions are the highest-risk scope, since a key with that access could move funds out of the account entirely if compromised. On Bitval, API keys can be scoped to exactly the permissions a given tool needs, and withdrawal permission is off by default.
Why Key Security Matters More Than Password Security
An exposed API key is functionally similar to handing someone your account, scoped to whatever permissions that key carries. Unlike a password, an API key usually isn't protected by two-factor authentication on each use, since it's designed for unattended programmatic access. This makes storing it securely, never in plain text in a public code repository, never shared over unencrypted channels, more important than it might seem at first.
Best Practices Before Connecting a Third-Party Tool
Before connecting any external tool to an exchange account, grant only the permission scope that tool needs, and avoid enabling withdrawal permission unless a specific use case requires it. Regularly reviewing which API keys are active, and revoking any tied to tools no longer in use, closes off unnecessary exposure over time.
API access will be set up soon on Bitval Exchange.
This article is for informational purposes only and does not constitute financial or investment advice.
