Captapi

One REST API for structured public data across 27 platforms and 174 endpoints — transcripts, AI summaries, comments, profiles, search, commerce data, ad libraries, analytics helpers, and engagement metrics. Clean JSON, no OAuth, one Bearer key.

Architecture

• Backend: FastAPI (Python 3.12) — Apify data collection + OpenAI summarization
• Frontend: Next.js 15 + Tailwind + shadcn/ui — landing, dashboard, billing
• DB / Auth: Supabase (Postgres + Auth + Storage)
• Cache / Rate limit: Upstash Redis
• Data collection: Apify Actors
• AI: OpenAI (gpt-4o-mini + Whisper)
• Billing: Paddle (Merchant of Record — subscriptions + top-up credits; Dodo Payments kept as a dormant fallback)

Quick Start

Prerequisites

• Python 3.12+
• Node.js 20+
• Supabase project (free tier)
• Apify account + API token
• OpenAI API key
• Paddle account (sandbox mode)
• Upstash Redis (free tier)

1. Supabase Setup

# Install Supabase CLI
npm i -g supabase

# Login and link your project
supabase login
supabase link --project-ref YOUR_PROJECT_REF

# Push schema
supabase db push

2. Backend Setup

cd backend
cp .env.example .env
# Fill in env vars

# Install dependencies (using uv)
pip install uv
uv pip install -e .

# Run dev server
uvicorn app.main:app --reload --port 8000

3. Frontend Setup

cd frontend
cp .env.example .env.local
# Fill in env vars

npm install
npm run dev

Open http://localhost:3000.

Project Structure

socialkit-clone/
├── backend/                FastAPI service
│   ├── app/
│   │   ├── main.py         App entry
│   │   ├── core/           Config, auth, credits, security
│   │   ├── routers/        Endpoint handlers per platform
│   │   ├── services/       Apify, OpenAI, Supabase, Cache, Paddle
│   │   ├── schemas/        Pydantic models
│   │   └── utils/          Helpers
│   ├── pyproject.toml
│   └── Dockerfile
├── frontend/               Next.js 15 app
│   ├── app/                App Router
│   ├── components/         UI components
│   └── lib/                Supabase + API client
└── supabase/
    └── migrations/         SQL schema

API

All endpoints require Authorization: Bearer capt_live_... (or x-api-key).

Base URL: https://api.captapi.com (local: http://localhost:8000).

Requests fetch fresh data by default. Pass cache=true for a free 24h cache hit.

Full catalog (platforms, paths, credits, params): frontend/lib/api-catalog.ts and https://captapi.com/apis.

Platforms (27)

YouTube, TikTok, Instagram, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, LinkedIn, Rumble, TikTok Shop, GitHub, Ad Library, Twitch, Spotify, SoundCloud, Linktree, Snapchat, Truth Social, Kick, Amazon Shop, Kwai, Komi, Pillar, Linkbio, Linkme.

Example endpoints

• GET /v1/youtube/transcript?url=...
• GET /v1/tiktok/video-details?url=...
• GET /v1/instagram/channel-details?url=...
• GET /v1/facebook/marketplace-search?q=...&location=...

Account

• GET /v1/account/balance — remaining credits
• GET /v1/account/request-history — recent requests
• GET /v1/account/daily-usage — day-by-day credit usage
• GET /v1/account/most-used-routes — ranked endpoint usage

Pricing

Credit-based. Prices mirror the live pricing page (frontend/components/marketing/pricing-plans.tsx).

One-time packs (never expire): Starter 2,000 · Growth 10,000 · Scale 50,000 credits.

License

MIT