Endpoints
Content & moderation
On-brand copy in; policy-breaking content out.
PII redaction
POST /v1/redact$0.03/call
Detect and strip names, emails, phones, SSNs, cards, and PHI from text before you store or log it.
curl https://api.kynth.studio/v1/redact \
-H "Authorization: Bearer $KYNTH_API_KEY" \
-H "Content-Type: application/json" \
-d '{"text":"Call Jane Doe at 415-555-0199 or jane@acme.com."}'Example response
200 OK
{
"redacted": "Call [REDACTED] at [REDACTED] or [REDACTED].",
"entities": [
{
"type": "name",
"text": "Jane Doe"
},
{
"type": "phone",
"text": "415-555-0199"
},
{
"type": "email",
"text": "jane@acme.com"
}
],
"entityCount": 3,
"usage": {
"credits": 3,
"balanceRemaining": 478
}
}Content moderation
POST /v1/moderate$0.02/item
Text or an image against YOUR policy → allow, review, or block, with the categories and excerpts that drove the call.
curl https://api.kynth.studio/v1/moderate \
-H "Authorization: Bearer $KYNTH_API_KEY" \
-H "Content-Type: application/json" \
-d '{"text":"This supplement cures anxiety in 3 days, guaranteed — DM me for a discount code.","policy":"No medical claims. No off-platform solicitation."}'Example response
200 OK
{
"flagged": true,
"decision": "block",
"categories": [
{
"category": "medical claim",
"severity": "high",
"excerpt": "cures anxiety in 3 days, guaranteed"
},
{
"category": "off-platform solicitation",
"severity": "medium",
"excerpt": "DM me for a discount code"
}
],
"rationale": "Direct cure claim violates the medical-claims rule; DM solicitation violates platform policy.",
"usage": {
"credits": 2,
"balanceRemaining": 298
}
}Brand-voice rewrite
POST /v1/rewrite$0.03/call
Any copy → your brand voice. Describe the voice or paste a sample; get the rewrite and what changed.
curl https://api.kynth.studio/v1/rewrite \
-H "Authorization: Bearer $KYNTH_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"}'Example response
200 OK
{
"rewritten": "It's live. Every account has the new feature as of today — go try it.",
"changes": [
"Dropped the press-release opener",
"Active voice, shorter sentences"
],
"usage": {
"credits": 3,
"balanceRemaining": 295
}
}Product copy
POST /v1/product-copy$0.05/product
Specs and an audience → listing-ready titles, bullets, a description, and SEO keywords — per channel.
curl https://api.kynth.studio/v1/product-copy \
-H "Authorization: Bearer $KYNTH_API_KEY" \
-H "Content-Type: application/json" \
-d '{"product":{"name":"Meridian standing desk","features":"Dual motor, 48x30 bamboo top, memory presets, 300lb capacity","audience":"home-office workers","keywords":["standing desk","adjustable desk"]},"channel":"shopify"}'Example response
200 OK
{
"titles": [
"Meridian Standing Desk — dual-motor bamboo, four memory heights"
],
"bullets": [
"Dual motors lift 300 lbs without the wobble",
"48\"×30\" solid bamboo top"
],
"description": "The Meridian is the desk you stop thinking about…",
"seoKeywords": [
"standing desk",
"adjustable height desk",
"bamboo standing desk"
],
"usage": {
"credits": 5,
"balanceRemaining": 290
}
}Image description
POST /v1/describe$0.03/image
An image → accessible alt text, a caption, tags, and any text found inside it. Accessibility and catalogs in one call.
curl https://api.kynth.studio/v1/describe \
-H "Authorization: Bearer $KYNTH_API_KEY" \
-H "Content-Type: application/json" \
-d '{"imageUrl":"https://…/product-shot.jpg","purpose":"product"}'Example response
200 OK
{
"altText": "Matte-black standing desk with a bamboo top in a sunlit home office",
"caption": "The Meridian desk at full height, morning light.",
"detailed": null,
"tags": [
"standing desk",
"bamboo",
"home office"
],
"embeddedText": null,
"usage": {
"credits": 3,
"balanceRemaining": 287
}
}