@swissspidy/belay-web

On-device runners for Belay, built on the browser's built-in AI:

• classifierApi(): classification with Chrome's Classifier API. The calibrated probability of the returned label is the confidence.
• promptApi(): structured (JSON) generation with Chrome's Prompt API.
• classifierJudge(): scores a generated answer with a Classifier API question ("is this answer correct?"), so generation tasks get a confidence too.

They work with the native APIs and with polyfills that define the same globals, such as the WebAI Studio extension.

Status: experimental (0.x). The built-in AI APIs are still behind flags in Chrome, and this API may change between minor versions.

Install

npm install @swissspidy/belay-core @swissspidy/belay-web

Usage

import { task, fetchAdapter } from '@swissspidy/belay-core';
import { classifierApi } from '@swissspidy/belay-web';

const moderate = task({
  name: 'moderation',
  schema: { type: 'binary', prompt: 'Is this comment abusive?' },
  local: classifierApi(),
  cloud: fetchAdapter({ url: '/api/belay' }),
  threshold: 0.8,
});

// run() never downloads a model; call prepare() from a user gesture to download it.
button.onclick = () => moderate.prepare({ onProgress: (p) => (progress.value = p) });

See the project README for generation tasks, model downloads and the full API.

License

Apache-2.0