API Documentation

Content Repurposer API for founders, creators, agencies, and SaaS teams that need repeatable multi-channel content output.

Ready to use this in a real workflow?

Test prompts in the free tool first, then come back and buy the API when you need repeatable production use.

Try Free Tool See Pricing

Base URL

https://content-repurposer-api-lilac.vercel.app

Authentication

Include your API key in the X-Api-Key header with every request.

X-Api-Key: your-api-key-here

Get your API key from the pricing section. After payment, your key is delivered by email. If you want to validate output before buying, use the free tool first. If you need more proof before buying, review the use cases and then return to pricing.

Endpoints

POST /api/repurpose

Transform content into one or more social media formats.

Request Body (JSON):

Field	Type	Required	Description
`content`	string	Yes	Source text to repurpose (max 10,000 chars)
`formats`	string[]	Yes	Output formats (max 5 per request)
`tone`	string	No	Tone of output: professional, casual, bold, educational (default: professional)
`audience`	string	No	Target audience description (default: general)
`cta`	string	No	Call-to-action to include where appropriate

Available formats:

Format ID	Output
`tweet_thread`	Twitter/X thread (3-7 tweets with hooks)
`tweet_single`	Single tweet under 280 characters
`linkedin`	LinkedIn post with professional formatting
`newsletter`	Email snippet with subject line
`instagram`	Instagram caption with hashtags
`tiktok`	Short-form video script (hook → body → CTA)
`reddit`	Reddit-style informative post
`summary`	2-3 sentence executive summary

Example Request:

curl -X POST https://content-repurposer-api-lilac.vercel.app/api/repurpose \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: your-api-key" \
  -d '{
    "content": "AI agents are transforming how small businesses operate in 2026. Over half of business leaders now deploy agentic AI for customer support, lead follow-up, and content creation.",
    "formats": ["tweet_single", "linkedin", "summary"],
    "tone": "professional",
    "audience": "small business owners"
  }'

Example Response:

{
  "success": true,
  "input_length": 178,
  "formats_requested": 3,
  "results": {
    "tweet_single": "In 2026, over 50% of business leaders are using AI agents — not chatbots — for real work: support, leads, content. The question isn't 'should I use AI?' It's 'how many weeks until my competitor does?'",
    "linkedin": "Here's what changed in 2026:\n\nAI agents aren't experimental anymore.\n\nOver half of business leaders now use them for...",
    "summary": "AI agents have moved from experimental tools to operational necessities for small businesses in 2026, with over half of leaders deploying them for customer support, lead management, and content creation."
  }
}

GET /api/formats

Returns the list of available output formats with descriptions. No authentication required.

GET /api/health

Health check. Returns {"status": "ok"}. No authentication required.

Error Codes

Code	Meaning
400	Bad request — missing or invalid fields
401	Unauthorized — missing or invalid API key
405	Method not allowed — use POST for /api/repurpose
429	Rate limited — max 60 requests/minute
500	Server error — retry the request
503	AI service temporarily unavailable

Rate Limits

60 requests per minute per API key. If you hit the limit, wait 60 seconds and retry.

Code Examples

Python

import requests

response = requests.post(
    "https://content-repurposer-api-lilac.vercel.app/api/repurpose",
    headers={"X-Api-Key": "your-api-key", "Content-Type": "application/json"},
    json={
        "content": "Your blog post here...",
        "formats": ["tweet_thread", "linkedin"],
        "tone": "casual",
        "audience": "developers"
    }
)

data = response.json()
print(data["results"]["tweet_thread"])
print(data["results"]["linkedin"])

JavaScript (Node.js)

const response = await fetch(
  "https://content-repurposer-api-lilac.vercel.app/api/repurpose",
  {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "X-Api-Key": "your-api-key"
    },
    body: JSON.stringify({
      content: "Your blog post here...",
      formats: ["tweet_single", "newsletter"],
      tone: "bold",
      audience: "startup founders"
    })
  }
);

const data = await response.json();
console.log(data.results);

Support

Need to verify fit before buying? Test the free tool, then use API pricing when you are ready for recurring production usage.

Next step

If the docs match your use case, go buy API access. If you are still testing fit, use the free tool first.

Buy API Access Try Free Tool