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Sapling Logo SDK

Use Sapling's JavaScript or Python SDK for turnkey spelling/grammar checking and autocomplete in any web application.

HTTP APIs availible for integration in over 20 different programming languages

Lets get started!

<script src=""></script>
<div contenteditable="true" id="check-space"></div>

<script type="text/javascript">
  key: '<API_KEY>',
  endpointHostname: "",
  editPathname: "/api/v1/edits",
  statusBadge: true,

const contentEditable = document.getElementById('check-space');

Instructions for getting an API key here:

Instructions for integration in other languages here:

View full Python and JavaScript SDK documentation here:

Developed by former researchers at:

Cal Stanford Google

  60% more grammar corrections

… than other systems at similar accuracy using state-of-the-art machine learning systems for natural language processing.

  Over 20 error types

Error categories such as preposition, noun form, and verb tense, including both high-level and fine-grained error information.

  Enterprise Security

Ask us about our no data retention policies, self-hosted/on-premises deployment options, and other cybersecurity policies and procedures.

  Low latency

Achieve the same real-time performance that users of Sapling's own interface experience.

  Custom models

Get corrections and edits tuned to the domain of your text—for example academic writing vs. subtitles.


Looking for more than a JavaScript grammar checker? Use Sapling's Web API to process high volumes of text or integrate custom interfaces.

Detailed API docs available.