x402 List

x402 Protocol Service Directory

●

Tollbooth

Finance PAYMENT-READY

payment-ready until 2026-10-06

Tollbooth — 59 verified tax, finance, lending, real-estate, retirement, investing, crypto and business calculators for AI agents, paid per call in USDC on Base mainnet (no account, no API key; $0.01–$1.00 per call via the Coinbase CDP facilitator). Every answer ships a formula/method trace, cited sources with a 2026 data-vintage stamp, and a reproducible SHA-256 hash over the RFC 8785 (JCS) canonical fixed point {endpoint, inputs, result, method, dataVintage} that any client re-derives for free with POST /v1/verify-hash — recompute the math instead of trusting the server. Free golden-vector self-checks at /v1/golden/:id publish expected inputs, results, and hashes. Optional paid tier: Ed25519-signed audit-grade Verification Receipt (POST /v1/receipt/:id — $1 per call, $5 per report; a normal paid answer does not include it). Tollbooth authors Golden-Vector Provenance (GVP), a single-author draft provenance spec (Apache-2.0 code / CC-BY-4.0 spec): the npm package golden-vector-provenance is published (v0.7.0, matching git tag v0.7.0), and a spec PR carrying the field is under public review at x402-foundation/x402#3304 (discussion #3234). Payment-rail-agnostic by construction: the fixed point binds the question and the answer, not the settlement rail. Also a free neutral verifier for any service's response (POST /v1/gvp/check).

Pay from $0.01 to $1.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

measured since 2026-07-12 (start of our harvest window) · $8.62 all-time · settled via coinbase

BASE URL https://x402toll.com │ WEBSITE https://x402toll.com │ ENDPOINTS 59 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-17 │ MONITORED SINCE 2026-07-17

VERDICT

ranking generation 3

solid 86/100 #16 of 95 in Finance by measured score

What the score read on this service: status online, 100% uptime 30d, 151ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Finance, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 95 listings, this one among them. That set is wider than the 95 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN FINANCE

Other Finance services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
Bitrefill strong 95 99.9% $679.73
Losbeto — LLM Gateway & Market Intelligence solid 92 99.8% $163.73
Market Intelligence API solid 91 98.6% $10.56
Stock Trends Market Intelligence solid 90 99.4% $94.94
x402stock solid 90 100% $21.75
5 of 94 other ranked services in Finance · see the whole category

ASSESSMENT

updated 4h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 100%
uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
151ms
avg response
134ms
total checks
2,776

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 to $1.00 (p48 in Finance)
price (min)
$0.01
price (max)
$1.00
category percentile (min)
p48 in Finance
category percentile (max)
p84 in Finance
endpoints / prices
59 / 7
model
tiered
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
77d
registrar
HOSTINGER operations, UAB
hosting
custom
domain created
2026-07-12

Identity facts, not a risk score.

traction $1.15 30d · 5 buyers · top buyer 91% (address, not entity)
volume 30d
$1.15
buyers 30d
5
settlements 30d
8
measured since
2026-07-12 (start of our harvest window)
last settlement
2026-09-25
top buyer share
91% of 30d volume (address, not entity)
trend 7d vs 30d
0.15x the 30d daily rate
networks
eip155:8453
volume all-time
$8.62
settlements all-time
77
median settlement 30d
$0.01
max settlement 30d
$1.00
settled via
coinbase ($1.15, 8 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /v1/business/entity-compare $0.10 Base USDC header
POST /v1/business/s-corp-salary $0.10 Base USDC header
POST /v1/commerce/break-even $0.05 Base USDC header
POST /v1/commerce/discount $0.02 Base USDC header
POST /v1/commerce/margin $0.02 Base USDC header
POST /v1/commerce/marketplace-fee $0.05 Base USDC header
POST /v1/commerce/order-total $0.02 Base USDC header
POST /v1/commerce/processor-fee $0.02 Base USDC header
POST /v1/commerce/roi $0.02 Base USDC header
POST /v1/commerce/sales-tax $0.05 Base USDC header
POST /v1/commerce/tip-split $0.01 Base USDC header
POST /v1/commerce/vat-gst $0.05 Base USDC header
POST /v1/crypto/apr-apy $0.02 Base USDC header
POST /v1/crypto/impermanent-loss $0.05 Base USDC header
POST /v1/crypto/liquidation-price $0.05 Base USDC header
POST /v1/crypto/tax-lots $0.25 Base USDC header
POST /v1/crypto/yield-compare $0.05 Base USDC header
POST /v1/investing/bond-yield $0.05 Base USDC header
POST /v1/investing/npv-irr $0.05 Base USDC header
POST /v1/lending/amortization $0.05 Base USDC header
POST /v1/lending/apr $0.05 Base USDC header
POST /v1/lending/auto-loan $0.05 Base USDC header
POST /v1/lending/compare $0.05 Base USDC header
POST /v1/lending/dti $0.02 Base USDC header
POST /v1/lending/extra-payment $0.05 Base USDC header
POST /v1/lending/heloc $0.05 Base USDC header
POST /v1/lending/mortgage-payment $0.05 Base USDC header
POST /v1/lending/mortgage-points $0.05 Base USDC header
POST /v1/lending/refinance $0.05 Base USDC header
POST /v1/llc-cost $0.05 Base USDC header
POST /v1/mortgage-affordability $0.05 Base USDC header
POST /v1/paycheck $0.05 Base USDC header
POST /v1/realestate/affordability $0.05 Base USDC header
POST /v1/realestate/arm $0.05 Base USDC header
POST /v1/realestate/cap-rate $0.05 Base USDC header
POST /v1/realestate/pmi $0.05 Base USDC header
POST /v1/realestate/rent-vs-buy $0.25 Base USDC header
POST /v1/reports/capital-gains-scenario $1.00 Base USDC header
POST /v1/reports/debt-plan $0.25 Base USDC header
POST /v1/reports/llc-50-state $0.50 Base USDC header
POST /v1/reports/mortgage-qualification $1.00 Base USDC header
POST /v1/reports/quarterly-package $1.00 Base USDC header
POST /v1/reports/relocation-paycheck $1.00 Base USDC header
POST /v1/reports/retirement-readiness $1.00 Base USDC header
POST /v1/reports/tax-estimate $1.00 Base USDC header
POST /v1/retirement/401k $0.05 Base USDC header
POST /v1/retirement/hsa-fsa $0.05 Base USDC header
POST /v1/retirement/ira-limits $0.05 Base USDC header
POST /v1/retirement/rmd $0.10 Base USDC header
POST /v1/retirement/roth-conversion $0.10 Base USDC header
POST /v1/retirement/social-security $0.25 Base USDC header
POST /v1/tax/1099-vs-w2 $0.10 Base USDC header
POST /v1/tax/bonus $0.05 Base USDC header
POST /v1/tax/capital-gains $0.10 Base USDC header
POST /v1/tax/estimated $0.10 Base USDC header
POST /v1/tax/federal-income $0.05 Base USDC header
POST /v1/tax/overtime $0.02 Base USDC header
POST /v1/tax/self-employment $0.05 Base USDC header
POST /v1/tax/state-income $0.05 Base USDC header
59 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /v1/business/entity-compare returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://x402toll.com/v1/business/entity-compare'
// 402 response (captured by monitor) · 59 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/investing/npv-irr",
      "mimeType": "",
      "description": "Net present value and internal rate of return for a cash-flow series (index 0 = today, usually a negative outlay), plus the profitability index and an accept/reject call."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/investing/bond-yield",
      "mimeType": "",
      "description": "Bond current yield and yield-to-maturity from face value, coupon, market price, and maturity — with the premium/discount/par classification."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/business/s-corp-salary",
      "mimeType": "",
      "description": "S-corp reasonable-salary employment-tax saving: SE tax a sole proprietor pays on all profit vs FICA an S-corp pays on just the salary, with the distribution that escapes self-employment tax."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/business/entity-compare",
      "mimeType": "",
      "description": "Total 2026 federal tax as a sole proprietor / LLC vs S-corp vs C-corp for the same profit — SE tax vs FICA vs 21% corporate tax with qualified-dividend double taxation — ranked to the lowest."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "1000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/tax-estimate",
      "mimeType": "",
      "description": "Full 2026 tax estimate in one call: federal income tax + self-employment tax + employee FICA + state income tax, from wages, self-employment income, and other income — with the component breakdown, effective and marginal rates, and after-tax income."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "1000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/retirement-readiness",
      "mimeType": "",
      "description": "Retirement-readiness projection: your savings grown to retirement age, the nest egg the 4%-rule requires for your target income, the surplus or gap, and the extra monthly contribution to close it."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "1000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/mortgage-qualification",
      "mimeType": "",
      "description": "Self-employed mortgage qualification worksheet: 2-year-average (or declining-income) qualifying income with add-backs, front/back DTI limits, the max home price you qualify for, and the full monthly PITI (principal, interest, tax, insurance, PMI, HOA) at that price. The flagship engine, as an agent-callable signed report."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "1000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/quarterly-package",
      "mimeType": "",
      "description": "Quarterly estimated-tax package (Form 1040-ES): derives your current-year total tax (federal income + self-employment + FICA + state) from income, applies the safe harbor (lesser of 90% current or 100%/110% prior-year tax), and returns the four equal 2026 installments net of withholding with their due dates."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "1000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/capital-gains-scenario",
      "mimeType": "",
      "description": "Multi-year capital-gains plan: realize a long-term gain all at once vs spread it evenly across N years, with the federal tax for each path (2026 0/15/20% long-term bands + the 3.8% NIIT) and the tax saved by spreading — the signed record an investor or agent uses to pick when to realize gains."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "500000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/reports/llc-50-state",
      "mimeType": "",
      "description": "All 51 US jurisdictions ranked by true 5-year LLC cost — filing, reports, franchise taxes, publication requirements — with per-state notes."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/retirement/hsa-fsa",
      "mimeType": "",
      "description": "2026 HSA or health-FSA contribution limit and income-tax savings — HSA self/family limits + age-55 catch-up + HDHP deductible/OOP bounds, or the FSA salary-reduction limit + carryover."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/crypto/impermanent-loss",
      "mimeType": "",
      "description": "Impermanent loss for a 50/50 constant-product LP position vs simply holding, given the price change of the volatile asset."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/tax/overtime",
      "mimeType": "",
      "description": "FLSA overtime pay: regular and overtime hours, the overtime rate, and gross pay for a week — federal 1.5× over 40 hours by default, any threshold/multiplier configurable."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/tax/capital-gains",
      "mimeType": "",
      "description": "Federal capital-gains tax: long-term stacked across the 2026 0%/15%/20% breakpoints, short-term at ordinary marginal rates, plus the 3.8% Net Investment Income Tax."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/order-total",
      "mimeType": "",
      "description": "Order total from subtotal, discount, tax rate, and shipping — tax excludes shipping by default (toggle with taxShipping)."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/tax/1099-vs-w2",
      "mimeType": "",
      "description": "Take-home comparison of the same pay as a W-2 employee vs a 1099 contractor — employee FICA vs self-employment tax (with the half-SE deduction) — and the higher contractor rate needed to match."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/lending/extra-payment",
      "mimeType": "",
      "description": "How much time and interest an extra monthly payment saves on a loan."
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    "resource": {
      "url": "https://x402toll.com/v1/crypto/liquidation-price",
      "mimeType": "",
      "description": "Liquidation price for a leveraged long or short (isolated margin), plus the % move to liquidation."
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      "description": "Monthly PMI cost and the month it auto-cancels (at 78% of original value, per the Homeowners Protection Act)."
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      "description": "Convert between APR and APY at any compounding frequency (or continuous)."
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      "description": "US net-paycheck breakdown for any of 51 jurisdictions: 2026 federal brackets, FICA (SS wage base $184,500, additional Medicare), and state income tax. Golden-vector verified."
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      "description": "The same salary across all 51 US jurisdictions, ranked by net take-home — the relocation what-if in one call, with per-state tax detail and the best-to-worst annual spread."
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      "description": "Self-employment (SE) tax on Schedule C net profit — Social Security to the 2026 $184,500 wage base, Medicare, Additional Medicare, and the deductible half."
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      "description": "Tip amount, total, and per-person split for a restaurant bill."
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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": "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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    "x402Version": 2
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        "amount": "100000",
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        "network": "eip155:8453",
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    "resource": {
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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."
    },
    "x402Version": 2
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    "accepts": [
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      "url": "https://x402toll.com/v1/lending/apr",
      "mimeType": "",
      "description": "True APR (Reg Z / TILA) from the note rate plus financed fees — the real cost of borrowing."
    },
    "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/realestate/rent-vs-buy",
      "mimeType": "",
      "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."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/tax/estimated",
      "mimeType": "",
      "description": "Quarterly estimated-tax safe harbor (Form 1040-ES): the required annual payment and per-quarter amount to avoid an underpayment penalty."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/vat-gst",
      "mimeType": "",
      "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."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/retirement/401k",
      "mimeType": "",
      "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."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/roi",
      "mimeType": "",
      "description": "ROI %, ROAS, profit, and profit margin from revenue and cost (e.g. ad spend)."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/marketplace-fee",
      "mimeType": "",
      "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)."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/lending/dti",
      "mimeType": "",
      "description": "Debt-to-income ratio — front-end and back-end — with pass/fail against your (or the conventional 28/36) limits."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/commerce/discount",
      "mimeType": "",
      "description": "Sale price after one or more stacked percentage discounts (applied sequentially, not summed) plus an optional flat amount off."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/realestate/arm",
      "mimeType": "",
      "description": "Adjustable-rate mortgage payment shock: the payment before and after the first reset, and the increase."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/lending/mortgage-points",
      "mimeType": "",
      "description": "Whether buying discount points pays off: monthly savings from the rate buydown and the break-even month."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402toll.com/v1/lending/amortization",
      "mimeType": "",
      "description": "Amortized monthly payment, total interest, and a year-by-year balance schedule for any loan."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "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
  }
]

OVER TIME

All charts use the today (UTC) selector: uptime, response time, volume and buyers show the current UTC day so far, price and sub-scores the last 24 hours; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/tollbooth/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
09-29 · uptime 100.0% · 83ms avg09-2909-29
TODAY (UTC) UPTIME 100%
RESPONSE TIME
09-29 · 83ms avg09-29 · 83ms avg09-2909-29
AVG RESP 134ms
PRICE (captured 402, USD)
09-28 · $0.0509-29 · $0.05$0.0509-2809-29

Median across 59 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
09-28 uptime: 100.0% compliance: 100% checks09-29 uptime: 100.0% compliance: 100% checksuptimecompliance09-2809-29

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Finance
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
no on-chain volume in the current UTC day
DISTINCT BUYERS
no distinct buyers in the current UTC day

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-24 · last up 2026-09-29

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 107ms
● OK 86ms
● OK 112ms
● OK 119ms
● OK 86ms
● OK 103ms
● OK 102ms
● OK 71ms
● OK 76ms
● OK 56ms
● OK 81ms
● OK 85ms
● OK 81ms
● OK 67ms
● OK 58ms
● OK 66ms
● OK 72ms
● OK 76ms
18 of 2,699 checks · live count

EMBED THIS BADGE

Show that Tollbooth is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

Tollbooth listed on x402-list
status
Tollbooth uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/tollbooth?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/tollbooth.svg" alt="Tollbooth listed on x402-list" height="28">
</a>
// Markdown
[![Tollbooth on x402-list](https://x402-list.com/badge/tollbooth.svg)](https://x402-list.com/services/tollbooth?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/tollbooth?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/tollbooth.svg?data=uptime" alt="Tollbooth uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/tollbooth/update.