Build core banking on primitives you control.

Guides, platform capabilities, and API references for the entire Lerian ecosystem — from the double-entry ledger up.

New to core banking? Start with the fundamentals → · Why Lerian →

post-transaction.sh

        
          {"# Double-entry: money moves, books stay balanced"}
        

        {"\n"}

        {"curl -X POST "}{"\"$MIDAZ/v1/organizations/$ORG/ledgers/$LEDGER/transactions/json\""}{" \\"}{"\n"}
        {"  -H "}{"\"Authorization: Bearer $TOKEN\""}{" \\"}{"\n"}
        {"  -H "}{"\"Content-Type: application/json\""}{" \\"}{"\n"}
        {"  -d '{"}{"\n"}
        {"    "}{"\"description\""}{": "}{"\"Payout\""}{","}{"\n"}
        {"    "}{"\"send\""}{": {"}{"\n"}
        {"      "}{"\"asset\""}{": "}{"\"BRL\""}{","}{"\n"}
        {"      "}{"\"value\""}{": "}{"\"15000\""}{","}{"\n"}
        {"      "}{"\"source\""}{": { "}{"\"from\""}{": [{ "}{"\"accountAlias\""}{": "}{"\"@treasury\""}{", "}{"\"amount\""}{": { "}{"\"asset\""}{": "}{"\"BRL\""}{", "}{"\"value\""}{": "}{"\"15000\""}{" } }] },"}{"\n"}
        {"      "}{"\"distribute\""}{": { "}{"\"to\""}{": [{ "}{"\"accountAlias\""}{": "}{"\"@merchant_42\""}{", "}{"\"amount\""}{": { "}{"\"asset\""}{": "}{"\"BRL\""}{", "}{"\"value\""}{": "}{"\"15000\""}{" } }] }"}{"\n"}
        {"    }"}{"\n"}

        {"  }'"}

Go from zero to your first transaction.

Model your ledger

Set up your Organization, Ledger, and Accounts.

Post a transaction

Move value with strict double-entry guarantees.

Deploy anywhere

BYOC on AWS, GCP, on-prem, or Lerian Cloud.

Products

Lerian is a complete, modular core banking platform. Start with the components that fit your operation and compose them into the platform you need.

Midaz CORE

The double-entry ledger at the platform's core — organizations, ledgers, accounts, and transactions you fully control. Source-available under the Elastic License 2.0.

Get started with Midaz →

Matcher

Reconcile transactions across banks, processors, and ERPs, and work through the exceptions that don't match.

Reconcile a batch →

Reporter

Turn ledger and platform data into audit-ready reports from configurable templates.

Build a report →

Flowker

Orchestrate financial workflows and connect third-party services through its API.

Design a workflow →

Tracer

Apply real-time spending controls and analyze transaction risk as money moves.

Trace a transaction →

Fetcher

Connect to external databases and extract their data through one secure API. Source-available under the Elastic License 2.0.

Extract external data →

Lender

Run the full consumer credit (CDC) journey — from product definition and origination through servicing, accounting, and audit.

Explore Lender →

Streaming Hub

Consume platform events and fan them out to your systems through signed webhooks, queues, or a pull API — the platform's event delivery edge.

Explore Streaming Hub →

Brazil Rails

Where the platform meets Brazil's payment system. Reach the rails through Lerian's own messaging with BACEN, or through an interface with a connectivity partner. Either way, you keep your ledger, your data, and your business logic. What are Brazil Rails? →

Lerian native messaging Connect straight to BACEN on Lerian-owned software — Pix over SPI, TED over SPB, and five more rails. → Direct Pix via JD Participate in Pix as a direct participant, with JD providing the certified connection to BACEN. → Indirect Pix via BTG Offer full Pix services as an indirect participant on BTG Pactual's infrastructure. → Bank Transfer (TED) Send and receive interbank transfers across Brazilian banks the same business day. →

Lerian Console

One web interface to operate every Lerian product — dashboards, settings, and per-product modules in a single place.

About the Console → Console settings →

Platform

Shared services that run under every product — access, lifecycle, observability, and Kubernetes delivery.