Lerian Midaz - The open core to build financial systems from scratch.
Lerian offers Midaz, the first open-source ledger in Latin America, featuring modular plugins and an MCP integrated with generative AI. We combine flexibility, autonomy and operational intelligence for those handling complex financial transactions.
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Hey!👋
We're thrilled to introduce Midaz, the first open-source financial ledger from Latin America.
Big thanks to @je_suis_yaroslav for helping us launch!
After years building infrastructure for digital banks and fintechs, we kept hitting the same wall:
❌ Closed-source cores,
❌ Expensive, unpredictable pricing,
❌ Buggy APIs,
❌ Zero control for developers.
The truth is: the foundation of the financial system is still painfully hostile to tech-teams.
So we decided to change that.
Meet Midaz.
A modular, flexible and AI-native financial ledger that’s open-source from day one.
Built for devs, designed for scale:
✔ Double-entry,
✔ Multi-asset,
✔ Multi-currency,
✔ Fully auditable,
✔ Real-time reconciliation,
✔ Performance-first architecture.
Why should you care?
Because most fintech infra is still locked behind SaaS handcuffs
Because debugging a transaction shouldn't mean filing a support ticket
Because if you're building the future of finance, you deserve full control, from the ledger up.
With Midaz, you can:
Deploy anywhere: cloud, on-prem, hybrid
Plug in only what you need
Fork it, audit it, evolve it (no gatekeeping).
If you believe that Open Source + AI will rewrite the financial system, this is the ledger you’ll want to build on.
Freedom should sit at the core of fintech.
🔗 [Check the docs]
🔗 [Explore GitHub]
🔗 [Visit our site]
💬 [Join the community on Discord]
👀 [Stalk us on LinkedIn if you're curious]
Let’s ledger together.
freedom at the core 💛