Developers

Infrastructure your team can integrate. Experts your team can reach.

Ledger1 helps approved clients integrate account, payment, card, and digital-asset workflows through available APIs, webhooks, sandbox environments, and transaction reporting — with direct support from solution architects and compliance professionals.

What approved programs can integrate

Capability areas.

  • API-based account and transaction workflows
  • Account creation or onboarding workflows where approved
  • Business-verification workflows
  • Document upload workflows
  • Beneficiary management
  • Bank withdrawals
  • Trade execution
  • Crypto beneficiary management
  • Crypto-withdrawal previews and execution
  • Transaction listing and status visibility
  • Webhook-target creation and management
  • Signed webhook notifications
  • Standardized API responses
  • Sandbox testing

Specific endpoints, payloads, resource shapes, and available capabilities are provided to approved programs during onboarding. Ledger1 does not publish endpoint details, credentials, workspace identifiers, or signing secrets on this website.

Sections

What integration involves.

APIs and sandbox

Approved programs may access account, transaction, and integration APIs plus a sandbox environment for test flows. Specific endpoints, resources, and rate limits are shared during onboarding.

Webhooks and event handling

Programs can create and manage webhook targets and receive signed event notifications. Signature verification is required on every incoming webhook.

Transactions and reporting

Standardized transaction listings, statuses, and reporting endpoints support reconciliation and operational visibility for approved capabilities.

Security and credential handling

Treat API secrets as credentials. Store them in a managed secret store. Never expose them in client-side code. Separate sandbox and production credentials. Restrict access according to least privilege.

Implementation support

Solution architects and compliance professionals work with the client through integration, test scenarios, exception handling, and launch readiness.

Security

Handle credentials as credentials.

Security expectations

Treat API secrets as credentials. Store secrets in a managed secret store. Never expose credentials in client-side code. Verify webhook signatures. Use idempotency and transaction-reference controls where supported. Maintain audit logs. Separate sandbox and production credentials. Restrict access according to least privilege. Do not submit private keys, seed phrases, or signing secrets to this website.
Request Developer Access

Bring the program you want to build.

Approved programs receive documentation, sandbox credentials, and named engineering support.

Discuss Your Program

Access is scoped by underwriting, program approval, and applicable partner terms.