# License

Apache-2.0 applies to numinance-spec, not to the private Numinance engine.

<FeatureStatus kind="public-spec"/>

<SourceReference paths={["LICENSE", "GOVERNANCE.md"]} />

`numinance-spec` is licensed under the Apache License, Version 2.0 (the `LICENSE` file, copyright 2026 Numinance). The license text is in the numinance-spec repository.

<Callout title="Scope" type="warn">
  Apache-2.0 applies to numinance-spec only. It does not apply to the private Numinance runtime or other proprietary
  components. Installing the open `numi` CLI gives you Apache-2.0 code, not the autonomous engineer.
</Callout>

Anything you build against the open contract is yours under the terms of the license. See [Open vs proprietary components](/docs/concepts/open-vs-proprietary).

Governance states that Numinance commits not to relicense released versions of the protocol, SDKs, conformance kits, CLI or official adapters under a more restrictive license. See [Governance](/docs/project/governance). This page is a summary, not legal advice.