> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neuro-tech.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Smart contracts
> How smart contracts work on the Neuro platform
In Neuro, smart contracts are structured digital agreements.
They are not just scripts stored on a ledger. They are platform objects that combine human-readable and machine-readable content, support signatures and lifecycle rules, and are designed to work across domains — transparent, interoperable, role-based, and tied to legal identity and ledger-backed auditability.
## Why Neuro uses smart contracts
Many systems need more than ordinary API calls and database records. They need a reliable way to represent:
* Agreements between parties
* Approvals and signatures
* Permissions and obligations
* Ownership transfer
* Conditional payments
* Automated workflows with legal or operational meaning
That is where smart contracts fit. In Neuro, they are meant to represent agreements in a way that both people and systems can work with.
## What makes them different
Neuro smart contracts emphasize:
* Both human-readable and machine-readable content
* Clear roles and signing parties
* Validation and lifecycle rules
* Interoperability across domains
* Auditability through Neuro-Ledger
* Integration with digital identity and payments
That is a different model from the more common "smart contract equals code on a chain" idea.
## How they work in the platform
Smart contracts in Neuro are closely tied to the rest of the platform:
* **Legal identities** identify the parties
* **The Neuron** provides the interaction layer
* **Neuro-Ledger** records important events and signatures
* **Payments and tokens** can be connected to contract rules and lifecycle events
This is why smart contracts are central to the platform, not just a side feature. They connect trust, identity, value transfer, and auditable operations in one model.
## Real-world applications
Smart contracts in Neuro serve as the governance mechanism across a range of applied contexts:
* **Medical data access** — Consent and access agreements for medical records can be represented as smart contracts, defining who can access what data and under what conditions, with signatures from identified parties.
* **Real estate tokenization** — Ownership agreements and transfer rules for tokenized real estate are governed by smart contracts, ensuring that all parties and conditions are explicit and auditable.
* **IoT provisioning** — Agreements between IoT device owners, service providers, and operators can be encoded in smart contracts, making the terms of interaction explicit and verifiable.
* **Milestone-based payments** — Contracts that release payments on defined conditions connect to eDaler and the broader payment layer, automating payment flows tied to real-world or system events.
## Key takeaways
The key point is:
**A Neuro smart contract is a governed digital agreement, not just code.**
That makes it useful for workflows where approvals, signatures, ownership, permissions, and traceable actions matter.
## Further reading
Platform specification and standards
Neuron and associated technologies
Tutorials and implementation guides