> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# TypeScript SDK

> Latest releases, fixes, and improvements to the Blnk TypeScript SDK.

<Update label="1.3.0" description="Jun 24, 2026">
  <Info>
    `blnk-typescript@1.3.0` covers Blnk Core **0.15.0**.
  </Info>

  ### Identities

  Delete identities from the SDK when you need to remove a customer or organization from your ledger.

  ### Balance monitors

  Remove balance monitors you no longer need. Blnk stops checking thresholds and sending webhooks for them.

  ### Reconciliation

  Start a reconciliation run and get back a reconciliation ID. Check final status with webhooks or `Reconciliation.get`.

  ### Inflight

  Commit or void inflight transactions from the SDK. On Core 0.15.0, these run through the queue by default.

  Pass `skip_queue` when you need an immediate applied or void result.

  ### Transactions

  Bulk create supports up to **10,000** transactions per request.

  ### Error handling

  Core returns structured error codes. The SDK puts them on the response so you can handle failures without parsing message text.

  ### Before you upgrade

  Note the following breaking changes:

  * Transaction and balance responses no longer include `rate` or `currency_multiplier`.
  * Branch on `response.error?.code` for Core failures. Do not parse error message text.
</Update>

<Update label="1.2.0" description="Jun 23, 2026">
  <Info>
    `blnk-typescript@1.2.0` covers the rest of Core (up until `0.14.5`).
  </Info>

  ### Search

  Search via the DB or Typesense, start a reindex, and check reindex progress from the SDK. The `identities` collection is also included.

  ### Reconciliation

  Upload external data, create and update matching rules, start a run, check status, or reconcile instantly without writing HTTP calls from scratch.

  ### Identities

  Create, fetch, list, and update identities.

  Tokenize and detokenize PII, list what's tokenized, and supply your own `identity_id` or ISO 8601 `dob` on create when you need to.

  ### Metadata, hooks, and API keys

  Attach metadata to ledgers, balances, transactions, and identities. Register and manage transaction hooks. Create, list, and revoke scoped API keys.

  ### HTTP client

  The SDK now uses native `fetch`, so you need Node.js 18 or later. Timeouts and retries are configurable.

  Retries apply to idempotent `GET` requests only. Logs redact sensitive fields, empty API keys no longer send `X-Blnk-Key`, and `204` responses no longer fail JSON parsing.

  ### Before you upgrade

  Note the following breaking changes:

  * You'll need Node.js 18 or later.
  * The default HTTP timeout is 10 seconds.
  * `Identity.create` requires only `identity_type`. Everything else is optional.
</Update>

<Update label="1.1.0" description="Jun 18, 2026">
  ### Transactions

  Fetch a transaction by ID or reference. Read lineage. Commit or void inflight transactions, refund, bulk create, bulk commit or void inflight batches, and recover stuck queue items.

  ### Balances

  Read a balance by ID (including from source), by indicator, at a point in time, or with lineage. Link a balance to an identity. Trigger balance snapshots.

  ### Ledgers and system

  Update ledger names. Check Core health with `System.health()`.

  ### Before you upgrade

  * Transaction response types now match Core. If you typed against `CreateTransactionResponse` or `BulkTransactionResponse`, update those types.
  * Client-side validation is stricter for dates, amounts, and split transaction legs. Fix invalid payloads before retrying.
</Update>

<Update label="1.0.1" description="Jun 4, 2026">
  ### What's in the SDK

  Create ledgers, balances, and transactions. Manage balance monitors. Commit, void, refund, and bulk-create transactions.

  ### Fixes

  Updated SDK and example dependencies to patch known security vulnerabilities.
</Update>