AI Text Humanizer

Rewrite a passage so it reads as natural prose without changing what it says, and report exactly what changed (word-level diff stats per paragraph). Unlike the browser tool at /humanize-ai-text, which sends one paragraph per request, this accepts the whole document in one call for Apify actors and automation pipelines. Max 12 paragraphs and 20,000 characters per call. Options tune rhythm, de-structure repeated templates, strip AI tells, and ban em-dashes.

POSThttps://www.startuphub.ai/api/v1/rewrite

Request

curl -X POST "https://www.startuphub.ai/api/v1/rewrite" \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"text":"It is worth noting that AI tools are changing how teams write.","strength":"balanced","options":["rhythm","tells"]}'

Parameters

textstringrequired

The passage to rewrite (max 20,000 chars, max 12 paragraphs).

strengthstringoptionaldefault: balanced

light | balanced | thorough. How aggressively to rephrase.

optionsstring[]optional

Toggles: rhythm, destructure, tells, punctuation.

Response

json

{
  "original": "It is worth noting that AI tools are changing how teams write.",
  "rewritten": "AI tools are reshaping how teams write.",
  "paragraphs": [
    { "original": "It is worth noting that AI tools are changing how teams write.", "rewritten": "AI tools are reshaping how teams write.", "changed": true }
  ],
  "stats": { "words_added": 1, "words_removed": 5, "words_kept": 6, "similarity": 0.72 },
  "model": "openrouter/...",
  "options_applied": ["rhythm", "tells"],
  "strength": "balanced",
  "cost": 1,
  "remaining_period": 499,
  "remaining_balance": 0
}

Errors

400Missing text or invalid JSON body

401Invalid or missing API key

413Text too long or too many paragraphs

429Insufficient credits

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