Build on Gezel The engine behind the app is yours to build on.

# Install once
$ npm install -g @bendyline/gezel-cli

# Start a craftbook in this folder’s project and wait
$ gezel do summarize-long "Summarize notes.txt for the board" --wait

# Set any parameter by name
$ gezel do powerpoint-deck "A deck about Delft" audience=investors

# One-shot prompt, reply on stdout
$ gezel run "Draft a friendly reminder about Friday’s deadline"

import { connect } from '@bendyline/gezel-app-sdk';

// The person approves this app once, in Gezel.
const app = await connect({
  appId: 'acme.notes',
  appName: 'Acme Notes',
  scopes: ['openai'],
  tokenStorage, // keep the token in the OS keychain
});

const models = await app.models();
const stream = await app.chat({
  model: models.data[0].id,
  messages: [
    { role: 'user', content: 'Give this note a short title.' },
  ],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? '');
}

# Scaffold a source folder that already validates
$ gezel app new my-app --with-page
$ cd my-app

# Every finding at once, then a package
$ gezel app validate .
$ gezel app pack .             # → my-app-1.0.0.gezapp

# Review and install it, then make a folder its project
$ gezel app add my-app-1.0.0.gezapp
$ cd ~/reading-circle && gezel app apply my-app