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Connected SDK client
KYC approved identity

After this5 min

BRE-B payment key
Receive instant payments via phone, email, or ID

BRE-B

Create and resolve BRE-B payment keys through the SDK.

Overview

The BRE-B client lets you:

create a BRE-B key
associate the key with the account for an existing ledger when ledgerId is provided, or create an account automatically when it is omitted
resolve a BRE-B key before starting a payment flow
pay to a resolved BRE-B key through session.swap.breb.create()
manage the key lifecycle by suspending, activating, or deleting a stored key

Create a BRE-B Key

create-breb-key.ts

const { data, error } = await session.accounts.breb.createKey({
  ledgerId: 'ledger-account-id',
  keyType: 'PHONE',
  key: '3015550184',
  displayName: 'Camila Ortega',
  webhookUrl: 'https://api.example.com/webhooks/breb',
  metadata: {
    source: 'checkout',
  },
});

if (error) {
  console.error(error.code, error.message);
} else {
  console.log(data?.urn);
  console.log(data?.remoteKeyId);
}

Create Params

Create a key

For more endpoint details, see: Create a BRE-B Key.

types.ts

interface CreateBrebKeyParams {
  keyType: 'ID' | 'PHONE' | 'EMAIL' | 'ALPHA' | 'BCODE';
  key: string;
  displayName?: string;
  ledgerId?: string;
  webhookUrl?: string;
  metadata?: Record<string, unknown>;
}

Key types and key value

In the SDK you use keyType and key. In BRE-B infrastructure those fields commonly appear as key_type and key_value.

keyType defines the format and purpose of the key inside BRE-B, while key contains the key value itself. These keys enable fast and secure payments between people and businesses without sharing traditional banking details.

SDK type (`keyType`)	BRE-B reference (`key_type`)	Description	Example value (`key`)
`ID`	`ID`	Identification number	`7922089`
`PHONE`	`MOBILE`	Mobile phone number	`+573001234567`
`EMAIL`	`EMAIL`	Email address	`user@example.com`
`ALPHA`	`ALPHA`	Custom alias	`@clientalias123`
`BCODE`	`BCODE`	Entity commercial code	`0012345678`

Note

The keyType + key combination must be unique across the BRE-B infrastructure. The platform validates this uniqueness.

Create Result

types.ts

type BrebOperationResult<T> = {
  data: T | null;
  error: {
    code: string | null;
    message: string;
  } | null;
};

createKey() returns { data, error }. On success, error is null. On failure, data is null.

If you pass ledgerId, the BRE-B key is associated with the account for that ledger. If you omit it, the SDK creates an account automatically.

When createKey() succeeds, data contains the created BRE-B key and its associated account:

types.ts

interface BrebKeyAccount {
  id: string;
  urn: string;
  ownerUrn: string;
  medium: 'breb';
  remoteKeyId: string;
  accountId: string;
  keyType: 'ID' | 'PHONE' | 'EMAIL' | 'ALPHA' | 'BCODE';
  key: string;
  displayName: string | null;
  status: AccountStatus;
  ledgerId: string;
  webhookUrl: string | null;
  metadata?: Record<string, unknown>;
  details: {
    id: string;
    remote_key_id: string;
    account_id: string;
    key: {
      key_type: 'ID' | 'PHONE' | 'EMAIL' | 'ALPHA' | 'BCODE';
      key_value: string;
    };
    display_name: string | null;
    status: string;
    created_at: string | null;
    updated_at: string | null;
    raw_response: Record<string, unknown>;
  };
  balance?: Record<string, TokenBalance>;
}

Resolve a BRE-B Key

resolve-breb-key.ts

const { data, error } = await session.accounts.breb.resolveKey({
  keyType: 'PHONE',
  key: '3015550127',
});

if (error) {
  console.error(error.code, error.message);
} else {
  console.log(data?.resolutionId);
  console.log(data?.owner?.name);
  console.log(data?.account?.accountNumber);
}

Resolve Response

types.ts

interface BrebResolvedKey {
  id: string;
  resolutionId: string;
  customerId: string;
  key: {
    keyType: 'ID' | 'PHONE' | 'EMAIL' | 'ALPHA' | 'BCODE';
    keyValue: string;
  };
  owner: {
    identificationType: string | null;
    identificationNumber: string | null;
    firstName: string | null;
    secondName: string | null;
    firstLastName: string | null;
    secondLastName: string | null;
    type: string | null;
    businessName: string | null;
    name: string | null;
  } | null;
  participant: {
    name: string | null;
    identificationNumber: string | null;
  } | null;
  account: {
    accountNumber: string | null;
    accountType: string | null;
  } | null;
  receptorNode: string | null;
  resolvedAt: string | null;
  expiresAt: string | null;
  raw: Record<string, unknown>;
}

Pay to a BRE-B Key

Resolve the recipient key first, then create a BRE-B payout order:

pay-to-breb-key.ts

const resolution = await session.accounts.breb.resolveKey({
  keyType: 'PHONE',
  key: '3015550127',
});

if (resolution.error || !resolution.data) {
  throw new Error(
    resolution.error?.message ?? 'Failed to resolve BRE-B key',
  );
}

const rates = await session.swap.findRates({
  fromAsset: 'COPM/2',
  toAsset: 'COP/2',
  fromMediums: ['kusama'],
  toMediums: ['breb'],
  amountSrc: '10000000',
});

if (rates.rates.length === 0) {
  throw new Error('No swap rates available for BRE-B payout.');
}

const result = await session.swap.breb.create({
  rateSig: rates.rates[0].sig,
  amountSrc: '10000000',
  depositInformation: {
    resolutionId: resolution.data.resolutionId,
  },
  args: {
    sourceAccountUrn: 'did:bloque:account:breb:demo-account-id',
  },
});

console.log(result.order.id, result.order.status);

Suspend a BRE-B Key

suspend-breb-key.ts

const { data, error } = await session.accounts.breb.suspendKey({
  accountUrn: 'did:bloque:account:breb:demo-account-id',
});

if (error) {
  console.error(error.code, error.message);
} else {
  console.log(data?.status);
}

Activate a BRE-B Key

activate-breb-key.ts

const { data, error } = await session.accounts.breb.activateKey({
  accountUrn: 'did:bloque:account:breb:demo-account-id',
});

if (error) {
  console.error(error.code, error.message);
} else {
  console.log(data?.status);
}

Delete a BRE-B Key

delete-breb-key.ts

const { data, error } = await session.accounts.breb.deleteKey({
  accountUrn: 'did:bloque:account:breb:demo-account-id',
});

if (error) {
  console.error(error.code, error.message);
} else {
  console.log(data?.deleted, data?.status);
}

Lifecycle Params and Results

types.ts

interface DeleteBrebKeyParams {
  accountUrn: string;
}

interface SuspendBrebKeyParams {
  accountUrn: string;
}

interface ActivateBrebKeyParams {
  accountUrn: string;
}

interface DeleteBrebKeyResult {
  deleted: true;
  accountUrn: string;
  keyId: string;
  status: 'deleted';
}

interface SuspendBrebKeyResult {
  accountUrn: string;
  keyId: string;
  keyStatus: string;
  status: 'frozen';
}

interface ActivateBrebKeyResult {
  accountUrn: string;
  keyId: string;
  keyStatus: string;
  status: 'active';
}

Error Handling

BRE-B operations return minimal errors:

error-handling.ts

const { data, error } = await session.accounts.breb.createKey({
  ledgerId: 'ledger-account-id',
  keyType: 'PHONE',
  key: '3015550184',
});

if (error) {
  if (error.code === 'U808') {
    console.log('Key already registered');
  }

  console.error(error.message);
}

Notes

holder_urn is taken from the connected SDK session
if ledgerId is provided, the account is linked to that ledger
if ledgerId is omitted, a ledger is created automatically
key suspension updates the account with PATCH /api/accounts/:accountUrn and status: 'frozen'
key activation updates the account with PATCH /api/accounts/:accountUrn and status: 'active'
key deletion updates the account with PATCH /api/accounts/:accountUrn and status: 'deleted'
BRE-B payments are created through session.swap.breb.create()

#BRE-B

#Overview

#Create a BRE-B Key

#Create Params

#Create a key

#Key types and key value

#Create Result

#Resolve a BRE-B Key

#Resolve Response

#Pay to a BRE-B Key

#Suspend a BRE-B Key

#Activate a BRE-B Key

#Delete a BRE-B Key

#Lifecycle Params and Results

#Error Handling

#Notes

#Next Steps

BRE-B

Overview

Create a BRE-B Key

Create Params

Create a key

Key types and key value

Create Result

Resolve a BRE-B Key

Resolve Response

Pay to a BRE-B Key

Suspend a BRE-B Key

Activate a BRE-B Key

Delete a BRE-B Key

Lifecycle Params and Results

Error Handling

Notes

Next Steps