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Captapi vs AfterTax AU

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Captapi compared with AfterTax AU
DetailCaptapi logo CaptapiAfterTax AU logo AfterTax AU
What it doesOne REST API for structured data from 33 social platforms Free Australian tax API and MCP server for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given AU
Pricing modelFreemium Open source
PricingFree: 100 lifetime credits, 40 requests/minute. Starter: $9/month with 2,000 monthly credits, 120 requests/minute. Pro: $27/month with 6,000 monthly credits, 300 requests/minute. Business: $90/month with 20,000 monthly credits, 600 requests/minute. All plans include access to all 179 APIs. Credits d Not given
Key features
  • Transcripts and AI summaries powered by GPT-4o-mini
  • Comments, replies, and profile statistics
  • Keyword, hashtag, and user search across platforms
  • Structured JSON responses without HTML parsing
  • MCP server for AI agents like Claude and Cursor
  • Official CLI and TypeScript SDK
  • HMAC-signed webhooks for monitoring and alerts
  • Automatic metric history time series
  • Batch endpoint for up to 20 calls per request
  • 24-hour shared cache with optional free cache hits
  • Take-home pay calculator for Australian salaries and hourly rates
  • PAYG withholding calculation using ATO Schedule 1 formulas
  • Bonus and commission withholding calculation
  • Annual tax estimate with offsets and Medicare levy
  • Superannuation guarantee calculation at 12%
  • ABN, ACN and TFN validation using check-digit algorithms
  • MCP server integration for Claude, ChatGPT and Cursor
  • JSON API accessible without sign-up or API key
  • Open-source JavaScript npm library with no dependencies
  • Tax rates and thresholds for 2025–26, 2026–27 and 2027–28
What makes it different
  • One API key works across 33 platforms with 179 endpoints instead of separate SDKs and OAuth flows
  • No OAuth or per-platform API keys required
  • Pay only for successful data extraction, not for failed requests or cache hits
  • Cross-platform analytics with normalized metrics in one consistent format
  • Uses ATO's own published formulas, not model memory
  • Tested against all 432 ATO sample rows for each tax year
  • No sign-up, API key or authentication required
  • Open-source code available on GitHub
  • Free for reasonable use with no storage of amounts entered
Community votes00
DR (Domain Rating by Ahrefs)31 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)120
Citation Flow (Majestic)380
Referring domains (Majestic)2630

4 details filled in for both companies.

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