| What it does | Decision API for typed questions with probabilities
| Free Australian tax API and MCP server for AI agents
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| AU
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| Pricing model | Freemium
| Open source
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| Pricing | Free plan available. Paid plans: Basic $10/month (1,000 credits), Pro $20/month (2,000 credits), Max $50/month (5,000 credits). Yearly plans save 20%. About 100 credits cost 1 USD before tax. One-time credit packs available; credits never expire.
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| Key features | - Three answer types: Noul (yes/no probability), Choice (select one of named options), Score (place on ordered scale)
- Up to 6 questions per request in one round trip
- Returns probability for every option, not just the selected one
- Support for TypeSafe SDKs by changing base URL
- State up to 60,000 characters (string, JSON object, or array)
- 2 to 8 options per Choice question
- 2 to 10 levels per Score question
- Accessible API playground for testing
- Failed calls and validation errors do not consume credits
| - 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 | - Independent service from TypeSafe with separate API keys and dashboard
- Simple structured API returning only the decision type you ask for, not text generation
- Transparent billing: 1 credit per decision call with no per-token charges
- All questions share one state in a single request for code simplicity
- TypeSafe's System One model available without TypeSafe account
| - 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) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 18 | 0 |
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| Referring domains (Majestic) | 2 | 0 |
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Jev API
AfterTax AU