Welcome to Unslop API

Tools for checking your writing and making it sound like you.

Read how Unslop works, no API key needed.

Create an account to get started, or enter an existing API key below. You can check spelling and grammar, find AI-sounding phrases, or rewrite a draft using your own rules.

Maximum cost per API action in USDPrepaid accounts reserve this amount per action and return unused credits. A small cap may stop a multi-call rewrite. Prices and failed-call charges.

Connect to your workspace

API key, if you are not signed inPasted keys stay in this tab's memory. Signed-in accounts use a session cookie.

Text workbench

Analysis runs without AI

Original

0 words20,000 character limit

Editing preferences

Voice profileRewrite providerMixed editing sends original excerpts and your guidance to both providers.

Format

English dialect

Writing genreReading targetEnglish readability estimates, not a guarantee of understanding or suitable subject matter. Ages 6–18 use grade = age minus 5. Use at least 30 words and 2 sentences.Writing complexityMeasures text complexity, not the writer's skill. Reading and writing targets must be compatible. Large level changes may need a larger change budget.Change budget 15%Added + removed prose tokens ÷ original tokens. A word replacement spends both sides. Also review meaning with AI

More rewrite controls

Require the original to pass the style gateMinimum style score (0–100)Minimum prose wordsMaximum small-edit callsMaximum words per replacementMaximum characters per replacementBy default, AI editing requires at least 50 words and a style score of 20/100. You can change or disable this gate above; the original is always scored. Otherwise your original is returned without a model call. Each call proposes one small change to original text. Unreviewed spans stay unchanged. Meaning review uses one extra call. Paragraph breaks stay intact. Retry an invalid patch once, within the call budgetYour instructionsA writing sample (optional)Second writing sample (optional)Voice comparisons need at least two samples with 20 sentences in total. Paste prose you approve, not instructions.Additional constraints (JSON)Supports edit count/size, output length, reading level, protected terms and spans. See the API schema below.

Only AI actions send text and selected voice guidance to a model.

API explorer

OpenAPI reference

Run any endpoint, manage private profiles, inspect traps, compare drafts, or connect approved external checks. Profile imports propose rules for you to review before saving.

Endpoint

Request JSON

Request schema

Response

Sign in or connect with an API key, choose an endpoint, and send a request.

A score is a clue.

The style score counts recognizable writing patterns. It does not identify an author. Short passages and quoted examples need context.

Your limits come first.

Code checks edit budgets, protected content, and reading-level constraints. Meaning and voice are still judgment calls; optional AI review is fallible.

Private by default.

Analysis stays on this service. Saved profiles use private workspace storage. External detectors and watermark checks require explicit consent and a configured provider.