Alpha Status

Kehto is an early toolkit and protocol kernel for implementing NIP-5D napplet runtimes. It does not define one mandatory runtime policy for the ecosystem. Paja is the concrete reference developer runtime built from Kehto; the playground is a visualization and integration fixture.

What Is Still Moving

• The NIP-5D specification is still under development.
• NAP contracts are not final.
• Capability names, requires declarations, injected-domain behavior, class posture, connect/resource behavior, and error envelopes may change.
• Package APIs may change to track the protocol.

How To Use These Docs

Use Kehto when you want to implement the current host-side shape of NIP-5D napplet hosting: sandboxed iframe loading, gateway artifacts, capability enforcement, service routing, and host-service tools. Use Paja when you want to exercise one concrete reference runtime.

Treat examples as implementation guidance for the current draft, not as a promise that the protocol or packages are stable.

Language Rule

When describing Kehto, use:

• "a runtime toolkit"
• "an unopinionated protocol kernel"
• "host-side implementation tools"

When describing Paja, use "the reference developer runtime". When describing the playground, use "a visualization" or "an integration fixture".

Do not use:

• "the runtime"
• "the runtime half of the ecosystem"
• "the Kehto reference runtime"
• "the playground reference runtime"
• wording that implies there will only be one napplet runtime