> For the complete documentation index, see [llms.txt](https://docs.infrablockchain.net/infrablockchain-antelope/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.infrablockchain.net/infrablockchain-antelope/for-developers/developer-guides-infrablockchain-antelope-native/infrablockchain-antelope-system-contracts.md).

# InfraBlockchain-Antelope System Contracts

## infra.system

The `infra.system` smart contract is sample system contract, and it defines the structures and actions needed for blockchain's core functionality.

{% content-ref url="/pages/I8KgJzICOlD9aaakibEt" %}
[infra.system](/infrablockchain-antelope/for-developers/developer-guides-infrablockchain-antelope-native/infrablockchain-antelope-system-contracts/infra.system.md)
{% endcontent-ref %}

## sys.tokenabi

The `sys.tokenabi` system contract defines the structures and actions that allow users to create, issue, and manage tokens for InfraBlockchain-Antelope based blockchains. 

The actual implementation of this contract is in the core, and this contract only stores the ABI.

{% content-ref url="/pages/PHnwSTNO2AdCEMuUtw72" %}
[sys.tokenabi](/infrablockchain-antelope/for-developers/developer-guides-infrablockchain-antelope-native/infrablockchain-antelope-system-contracts/sys.tokenabi.md)
{% endcontent-ref %}

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