Tollbooth

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    "resource": {
      "url": "https://x402toll.com/v1/commerce/sales-tax",
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      "description": "US sales tax — add or remove tax using the verified 2026 STATE base rate for any state + DC, plus an optional local rate. Flags gross-receipts states (HI/NM) and local-only states (AK)."
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      "description": "Full debt-payoff report: avalanche vs snowball simulated month-by-month with debt rollover — payoff order, debt-free month, total interest, and the exact gap between strategies."
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      "description": "Rank up to 10 stablecoin/yield options by projected return over a horizon at each stated APY."
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      "description": "Withholding and net take-home on a bonus/commission using the 2026 federal supplemental-wage rate (22% flat; 37% on cumulative supplemental wages over $1M), plus FICA and an optional state supplemental rate."
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      "description": "HELOC payments: interest-only during the draw period and the amortizing payment when repayment begins (the payment jump)."
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      "description": "Self-employed mortgage affordability: 2-year income averaging with add-backs, the declining-income rule, front/back DTI limits, PMI-aware max-price solve."
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      "description": "Refinance analysis: new payment, monthly savings, months to break even on closing costs, and lifetime interest saved."
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      "description": "Payment-processor fee and net received for Stripe, PayPal, and Square at their verified 2026 standard US rates — or reverse gross-up (what to charge to net a target)."
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      "description": "LLC formation cost for any US state + DC: filing fee, annual/biennial report, franchise tax, publication requirements — Year-1 and 5-year totals from each state's own 2026 fee schedule."
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      "description": "2026 IRA / Roth contribution limit for your situation — including the Roth MAGI phase-out and traditional-deduction phase-out (if covered by a workplace plan)."
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      "description": "Standalone 2026 state income tax for any of 51 US jurisdictions — progressive/flat/no-tax schedules, MFJ doubling — applied to the income you provide."
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      "description": "Auto-loan payment including state sales tax (verified 2026 rates), trade-in credit, down payment, and fees."
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      "description": "Compare 2–6 loan offers by true total cost (payments + fees) and rank them."
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      "description": "Margin, markup, and profit from cost — give cost plus any one of price, target margin %, or markup %, and it solves the rest."
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      "description": "Federal tax cost of a Roth conversion in one year: the extra income tax from stacking the converted amount on top of your other taxable income, with the marginal rate before and after."
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      "description": "True APR (Reg Z / TILA) from the note rate plus financed fees — the real cost of borrowing."
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      "description": "Rent vs buy over a horizon: year-by-year renting cost vs net cost of owning (crediting equity + appreciation, net of selling costs), with the break-even year."
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    "resource": {
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      "description": "Quarterly estimated-tax safe harbor (Form 1040-ES): the required annual payment and per-quarter amount to avoid an underpayment penalty."
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      "description": "VAT / GST for 16 major economies (UK, EU, Australia, Canada, Japan, Singapore, UAE, India, and more) at the verified 2026 standard rate — add or remove."
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      "description": "401(k) contribution vs the 2026 limits (incl. age 50+ and 60–63 catch-ups) plus the employer match, capped at the §415(c) total."
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      "description": "ROI %, ROAS, profit, and profit margin from revenue and cost (e.g. ad spend)."
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      "description": "Seller fees and net payout for Amazon, eBay, and Etsy at their verified 2026 standard fee schedules (Amazon referral %, eBay final value fee, Etsy listing + transaction + processing)."
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    "resource": {
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      "description": "Debt-to-income ratio — front-end and back-end — with pass/fail against your (or the conventional 28/36) limits."
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    "x402Version": 2
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      "description": "Sale price after one or more stacked percentage discounts (applied sequentially, not summed) plus an optional flat amount off."
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    "x402Version": 2
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    "resource": {
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      "description": "Adjustable-rate mortgage payment shock: the payment before and after the first reset, and the increase."
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    "resource": {
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      "description": "Whether buying discount points pays off: monthly savings from the rate buydown and the break-even month."
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    "x402Version": 2
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  {
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    "resource": {
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      "description": "Amortized monthly payment, total interest, and a year-by-year balance schedule for any loan."
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    "x402Version": 2
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        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/break-even",
      "mimeType": "",
      "description": "Break-even units and revenue (CVP): where contribution margin covers fixed costs."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "250000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/crypto/tax-lots",
      "mimeType": "",
      "description": "Match a crypto sale against buy lots (FIFO / LIFO / HIFO), returning realized gain/loss split short- vs long-term (IRS >365-day rule) plus the remaining lots."
    },
    "x402Version": 2
  }
]