The Bridge app

Environment	Bridge app
Sandbox	sandbox.bridge.linkio.world
Live	bridge.linkio.world

Environment

Bridge app

Sandbox

Live

Set up in this order

Do these once, before you write any code.

Secure your account

Turn on two-factor sign-in. See Sign-in and security.

Turn on your currency pairs

Choose which stablecoins and fiat currencies you want to use. See Currency pairs.

Allowlist your servers

Add the IP addresses your servers call from. Until you do this, every API request is blocked. See Allowlist your IP addresses.

Create an API key

Add a webhook

So we can tell you when payments change. See Set up webhooks.

Invite your team

What’s in the Bridge app

Section	What you can do there
Activity	See a summary of your payment volume over time.
Customers	See the customers you’ve added through the API.
Transactions	See every onramp and offramp, filter them, and open the details.
Statements	Create and download reports of your payments.
API keys	Create, update, and revoke API keys.
Webhooks	Add webhook URLs, choose events, and see every delivery.
Team	Invite people and choose what they can do.
Settings → Integration	Your API version, currency pairs, and IP allowlist.
Settings → Account	Your business ID (starts with `bus_`), your API version, your profile, password, two-factor sign-in, and passkeys.

Set up in this order