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The Breet API lets you accept crypto deposits, convert between assets, manage bank payouts, and track transactions programmatically. This page covers authentication, required headers, and response format.

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Authentication

All requests to our API must be authenticated. We use a secure, header-based authentication method built around the following credentials:
  • x-app-id
  • x-app-secret
These credentials uniquely identify your application and authorize access to protected endpoints. Additionally, you must specify the environment you want to interact with by including:
  • X-Breet-Env
This header determines whether your requests are routed to the development or production environment.

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Accepted values for X-Breet-Env

  • development
  • production
If this header is missing or invalid, your request will be rejected.
The API base URL: https://api.breet.io/v1

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Obtaining your credentials

You can generate and manage your API credentials directly from the Developers section of your dashboard:
  1. Log in to your dashboard
  2. Navigate to Developers → API Credentials
  3. Generate or copy your:
    • App ID
    • App Secret
Your App Secret is extremely sensitive. Treat it like a password or private key. For a step-by-step walkthrough, see the quickstart.

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Keeping your credentials secure

To maintain the security of your integration:
  • Never expose your App Secret in frontend code, mobile applications, GitHub repositories, or client-side logs
  • Store secrets in a secure storage system (e.g., environment variables, Vault, AWS Secrets Manager, GCP Secret Manager)
  • Rotate your credentials periodically as part of your security best practices
  • If you suspect a leak or unauthorized access:
    • Immediately regenerate your App Secret from the dashboard.
    • The previous secret will be invalidated automatically.
This ensures only authorized systems can access the Breet API.

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Authentication best practices

  • Use server-to-server communication whenever possible
  • Avoid logging secrets in plaintext
  • Ensure all requests are made over HTTPS
  • Always include the correct X-Breet-Env header in every request

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Response format

All API responses follow a consistent JSON structure: 
{
  "success": true,
  "message": "Description of the result",
  "data": { ... },
  "meta": { ... }
}
  • success: true for successful requests, false for errors.
  • message: A human-readable description of the result.
  • data: The response payload (object, array, or empty).
  • meta: Metadata such as pagination info.
For full details on error handling, see the Error handling guide.

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The Cursor and VS Code buttons open the app directly if installed. For other tools or manual setup, copy the MCP server URL: https://docs.breet.io/mcp

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Further reading

  • Supported assets: See which cryptocurrencies and stablecoins are available for deposits and withdrawals.
  • Auto-settlement: Automatically convert crypto deposits to local currency and pay out to a bank account.
  • Webhooks: Receive real-time notifications for crypto transactions and withdrawal events.
  • Pagination: Navigate large result sets with page-based pagination.
  • Error handling: Understand the standard response format and common error scenarios.
  • Rate limiting: Understand API rate limits and how to handle them.
  • Use cases: See real integration examples for fintech, e-commerce, payroll, and more.
  • API status: Check real-time uptime and incident history.