Brand-voice rewrite

Any copy → your brand voice. Describe the voice or paste a sample; get the rewrite and what changed.

POST/v1/rewrite$0.03/call, 3 credits, charged only on success120 calls a minute per key

The example in the published schema

charged 0 credits

auth (bearer key)
per-key throttle
validate body
balance precheck
run the capability
charge credits ON SUCCESS ONLY
JSON

A successful call costs 3 credits, $0.03/call. A failed call costs nothing.

The request body/v1/rewrite

{
  "text": "We are pleased to announce our new feature is now available to all users.",
  "voice": "Confident, plain-spoken, a little wry. Short sentences.",
  "goal": "sound human",
  "length": "same"
}

The responsepublished example

// sending the call
// 0 credits charged so far

curl https://api.thecompound.tech/v1/rewrite \
  -H "Authorization: Bearer $COMPOUND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"We are pleased to announce our new feature is now available to all users.","voice":"Confident, plain-spoken, a little wry. Short sentences.","goal":"sound human","length":"same"}'

Scored

7 of 7 field checks passed when the eval suite last ran against production, on 2026-07-08. Every endpoint's score

The Content & moderation guide has this endpoint with its example response. The reference has every parameter.

More from Content & moderation

PII redaction $0.03/callDetect and strip names, emails, phones, SSNs, cards, and PHI from text before you store or log it.Content moderation $0.02/itemText or an image against YOUR policy → allow, review, or block, with the categories and excerpts that drove the call.Product copy $0.05/productSpecs and an audience → listing-ready titles, bullets, a description, and SEO keywords, per channel.Image description $0.03/imageAn image → accessible alt text, a caption, tags, and any text found inside it. Accessibility and catalogs in one call.

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