| What it does | An API that turns chat questions into sourced, typed UI cards
| Free Australian tax API and MCP server for AI agents
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| Stage | Established
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| Founded | 2011
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| Based in | DE
| AU
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| Pricing model | Freemium
| Open source
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| Pricing | Free: $0/month, 50 tokens a day. Starter: $9/month, 1,000 tokens a day. Pro: $49/month, 10,000 tokens a day. Scale: $199/month, 50,000 tokens a day. Token packs: 5,000 tokens for $10, 25,000 tokens for $40, 100,000 tokens for $120.
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| Key features | - Card types for weather, nutrition, recipes, and comparisons
- Integration with Vercel AI SDK
- Web component for rendering answer cards
- Source attribution for all answers
- Pay only for matched answers, questions are free
- No user conversation storage or message text logging
- Versioned card schemas that never break existing code
- Infrastructure running in Germany
| - 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
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| What makes it different | - Rich, sourced answer cards instead of text
- Model sees only text and sources, not the full card
- User privacy by design with no message storage
- Works with any AI SDK model that supports tool calling
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 13 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 23 | 0 |
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| Referring domains (Majestic) | 34 | 0 |
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WebKnox
AfterTax AU