Clone SDK

Add next-prompt prediction and Tab completion to your existing composer. Suggestions appear as ghost text. Tab inserts; your application decides when to send.

SDK 0.7.0: instant display remains the default. Set presentation="typewriter" for a cancellable display animation after the complete JSON response arrives; the API does not stream. These options and Clone mode are absent from the 0.3.1 package. Keep ordinary typing and sending available when predictions are loading, fail, or never return. See the rendering contract before building a custom editor adapter.

Use your product's conversation, selected artifact and user preferences as context. Your end users do not need a Clone account. Connecting a user's Clone context is optional.

• Headless controller for custom editors.
• React hook and textarea, plus an optional assistant-ui adapter.
• Server client for prediction, usage and optional account connection.
• Python server client, with sync and async interfaces. See Python installation and usage.
• Optional Clone mode, explicitly started by the end user, with preview, Stop and bounded automatic sends. See Clone mode.
• Direct HTTPS API for any backend or custom interface. See API integration.
• MIT licensed SDK. The hosted prediction API is a separate service that requires a server-side app key. See service boundaries and billing.

Quick start

Open your product repository in your coding agent and paste:

Read https://clone.is/docs/sdk-quickstart and integrate Clone SDK into this product using the documented npm version and a lockfile. Discover our composer, backend and authentication; reuse existing setup and keep app keys server-side. Wire prediction, acceptance, edits, explicit evaluations and rejection, successful submission and observed task outcomes through the authenticated backend. Preserve typing, IME, Undo and manual sending during delays and outages. Ask only about unresolved product choices; keep personalization, automatic sending, feedback text collection and paid usage opt-in. Verify the actual integration and report installation, feedback delivery, outage results and pending live/customer checks separately.

Your agent will handle setup, integration and verification. Production onboarding includes company account, app registration, pricing and card setup before SDK installation. You personally complete login, billing consent and card entry; no fee is charged at card registration. Choose Try the free sandbox for a separate card-free evaluation.

Manual setup

First complete production app and card setup, or explicitly choose the free sandbox. Save the one-time app key on your backend before leaving the console. Then install the package below.

Node 22.13+, ESM. React integrations support 18 and 19. The headless controller and server client do not require React.

Install the public npm package. Existing integrations can keep their pinned version while validating an upgrade:

npm install --save-exact @clone-ai/prompt-prediction@0.7.0

Use your project's package manager and commit its lockfile. Verified GitHub release archives remain available. Hosted API access requires a separate app key.

'use client';
import { useState } from 'react';
import { createPredictionTransport } from '@clone-ai/prompt-prediction';
import { TabCompletionInput } from '@clone-ai/prompt-prediction/react';

const transport = createPredictionTransport('/api/clone/predict');

export function Composer({ threadId, contextRevision }: {
  threadId: string;
  contextRevision: string;
}) {
  const [value, setValue] = useState('');

  return (
    <TabCompletionInput
      aria-label="Instruction"
      value={value}
      onValueChange={setValue}
      transport={transport}
      context={{
        session_id: threadId,
        context_revision: contextRevision,
        language: 'auto',
        messages: [],
      }}
    />
  );
}

Implement /api/clone/predict in your authenticated backend using CloneClient from @clone-ai/prompt-prediction/server. Derive the user ID from the server session. Keep the app key on the server, never in browser code or VITE_* / NEXT_PUBLIC_* variables. Pass your real conversation and advance context_revision when it changes.

For complete setup and verification, follow the integration guide.

Try the demo

git clone https://github.com/cloneisyou/clone-sdk.git
cd clone-sdk
corepack enable
pnpm install --frozen-lockfile
pnpm dev

Open localhost:4317. Type, accept with Tab, then send explicitly. Add ?assistant=1 to try assistant-ui. The default demo uses synthetic suggestions and sends nothing to Clone.

For a connected proxy, outage testing and private measurements, follow pilot validation. Synthetic checks, real model calls and customer acceptance are separate evidence.

Choose an entry point

Import	Use it for
@clone-ai/prompt-prediction	Controller, browser transport, errors and public types
@clone-ai/prompt-prediction/react	useTabCompletion or TabCompletionInput
@clone-ai/prompt-prediction/assistant-ui	CloneComposerInput inside an existing assistant-ui composer
@clone-ai/prompt-prediction/server	CloneClient and optional PKCE connection flow

The React input uses a native textarea. Rich-text editors need an insertion and Undo adapter around the controller. The assistant-ui adapter targets @assistant-ui/react@0.15.21 and uses its unstable_useComposerInput hook; verify compatibility before upgrading it.

Develop

pnpm check
pnpm exec playwright install chromium
pnpm test:browser
pnpm test:package

Package tests install the actual archive into React 18 and 19 consumers and verify build, Tab insertion, Undo, explicit send and context changes. These checks do not establish suggestion quality, native OS IME behavior or acceptance in your application.

See Contributing for the repository layout and validation commands, context mapping for request design, reliability for outage handling and limits, and Releases for distribution.

Security · Changelog · MIT license

Feedback loop

SDK 0.7.0 can return explicit rejection, evaluations, edited successful submissions and host-observed outcomes to the API. Wire the packaged tracker to your host send and authenticated proxy. Text collection is off by default. See feedback integration for scoped memory, delivery, expiry and clearing. These features require the API feedback deployment; event collection alone is not model learning.