Proofread and Grammar Check API

About Proofread and Grammar Check API

Proofread and Grammar Check API is an asynchronous service that checks submitted text for grammar and spelling errors and returns a corrected version. A client submits plain text content to a POST endpoint and receives a job_id and a status_url; the corrected text is then retrieved by polling a GET status endpoint until the job reaches a terminal state. The status response reports one of four states — queued, running, success, or failed — and, once successful, includes the proofread and grammar-corrected text in a result field.

It is intended for content pipelines that need automated language cleanup without blocking the request that submits the text, such as cleaning user-generated content, drafts, support replies, or CMS copy before publishing. The API is published by SharpAPI and listed on ApyHub, at version 1.0.0 with two endpoints (submit and status check). Clients are instructed to poll the status endpoint at most once per second, since faster polling counts against the rate limit without completing the job sooner.

Key features

• Asynchronous proofreading and grammar-check job submission via POST
• Poll job status endpoint returns queued, running, success, or failed states
• Returns corrected text in the result field once the job succeeds
• Async design avoids blocking the request that submitted the text
• Rate-limited polling with documented error codes for bad requests, auth, and rate limits

Frequently asked questions