TaxPulse | Apiosk Gateway

Method	Path	Description	Cost
GET	/api/crypto/verification-stats	Aggregate production totals for the wallet-review citation gate: findings generated vs. blocked by machine citation-verification across all paid reviews. Blocked findings are removed from reports rather than shown unverified — this endpoint is the public proof that the gate is real.	Free default	View details
GET	/api/crypto/wallet-guard	Wallet drainer-protection scan: enumerates every live token approval (ERC-20, ERC-721, ERC-1155) your wallet has granted across major EVM chains, risk-ranks each spender (malicious flags, unverified contracts, unlimited allowances, EOA spenders), and returns a prioritized revocation action list. Deterministic security scan.	$0.57 default	View details
GET	/api/crypto/wallet-review	Citation-verified crypto wallet tax review: submit wallet addresses + jurisdiction, get a professional report grounded in primary tax law (statutes, rulings, case law) with machine-verified citations a CPA can check and sign. Law-synthesis layer, not a cost-basis calculator. Covers US, UK, Germany, India, Canada, Australia, Japan, Brazil, Singapore.	$13.80 default	View details
GET	/api/crypto/wallet-sleuth	On-chain wallet investigation: resolve a wallet to its identity (ENS, public labels), trace its funding path to origin, surface top counterparties with entity labels, find sibling wallets funded by the same source, and screen for sanction/phishing/mixer risk. Every finding carries an explorer evidence link.	$1.73 default	View details
GET	/api/crypto/wallet-snapshot	Wallet snapshot: deterministic on-chain stats for one address across major EVM chains — transaction count, token-transfer count, wallet age (first-tx date), native balance, account type, and risk-flag count. Lite-tier preview (agent-cap friendly); no investigation narrative or approval enumeration. 100% deterministic, no LLM.	$0.29 default	View details
GET	/api/crypto/wallet-watch	Whale-watch: a standing 30-day watch on one EVM wallet. Sweeps every 15 minutes across 6 chains; alerts the moment a transfer at or above your USD threshold moves in or out — delivered to your webhook and readable any time via the free status endpoint with your read token. Fully anonymous: no account, no email, the returned credentials are all that exists.	$5.75 default	View details
GET	/api/crypto/wallet-watch-status	Poll a registered whale-watch: config, sweep health (provider failures shown loudly — degraded coverage is never an all-clear), and the last 100 alerts. Auth = watch_id + read_token from registration.	Free default	View details
GET	/api/tax/529-check	529 withdrawal & rollover checker — is THIS withdrawal qualified? K-12 (OBBBA $20k cap from 2026 + expanded categories), postsecondary credentialing, SECURE 2.0 Roth rollovers (15-yr/5-yr/earned-income/$35k gates computed), student-loan cap, non-qualified tax + 10% penalty math with exception routing — plus the California non-conformity traps (K-12, credentialing and 529→Roth are ALL CA-taxable + 2.5% despite being federal-tax-free). Deterministic, citation-pinned, no LLM.	$0.57 default	View details
GET	/api/tax/529-check-lite	529 withdrawal & rollover checker — LITE preview. Same deterministic engine as the full product: verdict + a one-line federal headline for THIS withdrawal (K-12 OBBBA cap, credentialing, SECURE 2.0 Roth rollover, student-loan cap, non-qualified) and a California-trap flag. Full federal/CA breakdown, all flags, and IRC/SECURE 2.0/OBBBA/FTB citations are in the full product. Deterministic, no LLM.	$0.29 default	View details
GET	/api/tax/aotc-recovery	Missed AOTC recovery — did you leave up to $2,500/year of education credits unclaimed? Per-year screen across the OPEN 1040-X amendment window (TY2023–2025): exact §25A credit math (100% of first $2k + 25% of next $2k), MAGI phaseouts, 4-year/half-time/MFS eligibility gates, 40% refundable portion (pays even at $0 tax), 529-coordination and LLC-vs-AOTC traps. Deterministic, statute-cited, no LLM.	$0.57 default	View details
GET	/api/tax/compare	Compare tax by country, income tax rates, corporate tax, capital gains tax side by side. Worldwide guide ranking 2-3 jurisdictions for relocation, corporate setup, or investment structuring across income, corporate, and capital-gains regimes. Tax intelligence, not advice.	$0.14 default	View details
GET	/api/tax/country	Income tax rates by country, corporate tax, capital gains tax, tax residency rules, crypto tax treatment for any jurisdiction. Worldwide guide giving a full tax overview of any country by scenario. Tax intelligence, not advice.	$0.12 default	View details
GET	/api/tax/crypto	Crypto tax by country, capital gains tax on crypto, DeFi tax, staking tax, NFT tax, CARF reporting obligations. Worldwide guide on how crypto is taxed by jurisdiction and activity. Tax intelligence, not advice.	$0.14 default	View details
GET	/api/tax/expat	Expat tax obligations, FBAR, FATCA, FEIE foreign earned income exclusion, non-dom rules, exit tax for citizens living abroad. Worldwide guide on cross-border filing by nationality and destination. Tax intelligence, not advice.	$0.14 default	View details
GET	/api/tax/nomad	Digital nomad tax, territorial-tax countries, 183-day residency rule, tax residency by jurisdiction. Worldwide guide mapping zero/low-tax nomad destinations, where remote income is taxed, and the expat obligations that follow. Tax intelligence, not advice.	$0.14 default	View details
GET	/api/tax/state	US state income-tax answers grounded in the actual state code with machine-verified citations a CPA can check. California (R&TC/FTB/OTA, static two-era conformity, NOL suspension) and New York (Tax Law/20 NYCRR/DTF/Tribunal, rolling conformity + OBBBA decoupling, convenience rule, statutory residency, resident-credit trap). Citation-locked state tax intelligence, not advice. More states as corpora ship.	$0.57 default	View details
GET	/api/tax/structure	Corporate tax structuring, holding company tax, IP box regimes, BEPS compliance, cross-border tax optimization. Worldwide guide on structuring international entities by objective, revenue, and jurisdictions. Tax intelligence, not advice.	$0.17 default	View details
GET	/api/tax/treaty	Tax treaty lookup, withholding tax rates, double-taxation relief, residency tiebreaker rules, MLI modifications for any country pair. Worldwide guide returning treaty outcomes by transaction type. Tax intelligence, not advice.	$0.14 default	View details
GET	/api/tax/vat	VAT/GST rates, sales tax, VAT registration thresholds, digital-services tax, OSS/IOSS compliance by country. Worldwide guide returning indirect-tax rates and thresholds across global jurisdictions for any sector or business type. Tax intelligence, not advice.	$0.12 default	View details

Endpoint documentation

GET/api/crypto/verification-stats

Free default

Description

Aggregate production totals for the wallet-review citation gate: findings generated vs. blocked by machine citation-verification across all paid reviews. Blocked findings are removed from reports rather than shown unverified — this endpoint is the public proof that the gate is real.

Documentation

Citation-gate live track record (free)

**Price:** Free per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

Free default

Authentication

Free PulseNetwork route; no API key, wallet or payment required.

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-guard

$0.57 default

Description

Wallet drainer-protection scan: enumerates every live token approval (ERC-20, ERC-721, ERC-1155) your wallet has granted across major EVM chains, risk-ranks each spender (malicious flags, unverified contracts, unlimited allowances, EOA spenders), and returns a prioritized revocation action list. Deterministic security scan.

Documentation

Wallet drainer-protection scan

**Price:** $0.5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.57 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "address": {
      "description": "EVM wallet address (0x…)",
      "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "chains": {
      "description": "CSV of chains. Default: all (ethereum,base,arbitrum,optimism,polygon)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "address"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-review

$13.80 default

Description

Citation-verified crypto wallet tax review: submit wallet addresses + jurisdiction, get a professional report grounded in primary tax law (statutes, rulings, case law) with machine-verified citations a CPA can check and sign. Law-synthesis layer, not a cost-basis calculator. Covers US, UK, Germany, India, Canada, Australia, Japan, Brazil, Singapore.

Documentation

Citation-verified crypto wallet tax review

**Price:** $12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$13.80 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "addresses": {
      "description": "Comma-separated wallet addresses (EVM 0x… and/or Solana), max 5",
      "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "chains": {
      "description": "EVM chains to scan (CSV). Default: ethereum,base,arbitrum,optimism,polygon,gnosis",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country": {
      "description": "Jurisdiction: US | UK | DE | IN | CA | AU | JP | BR | SG",
      "example": "US",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "tax_year": {
      "description": "Focus tax year (e.g. 2025). Default: all activity",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "addresses",
    "country"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-sleuth

$1.73 default

Description

On-chain wallet investigation: resolve a wallet to its identity (ENS, public labels), trace its funding path to origin, surface top counterparties with entity labels, find sibling wallets funded by the same source, and screen for sanction/phishing/mixer risk. Every finding carries an explorer evidence link.

Documentation

On-chain wallet investigation

**Price:** $1.5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$1.73 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "address": {
      "description": "EVM wallet address (0x…)",
      "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "chain": {
      "description": "Chain to investigate: ethereum | base | arbitrum | optimism | polygon | gnosis. Default ethereum",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "depth": {
      "description": "Funding-trace depth (1-5). Default 3",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "address"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-snapshot

$0.29 default

Description

Wallet snapshot: deterministic on-chain stats for one address across major EVM chains — transaction count, token-transfer count, wallet age (first-tx date), native balance, account type, and risk-flag count. Lite-tier preview (agent-cap friendly); no investigation narrative or approval enumeration. 100% deterministic, no LLM.

Documentation

Wallet snapshot (lite tier)

**Price:** $0.25 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.29 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "address": {
      "description": "EVM wallet address (0x…)",
      "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "chains": {
      "description": "CSV of chains. Default: all (ethereum,base,arbitrum,optimism,polygon,gnosis)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "address"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-watch

$5.75 default

Description

Whale-watch: a standing 30-day watch on one EVM wallet. Sweeps every 15 minutes across 6 chains; alerts the moment a transfer at or above your USD threshold moves in or out — delivered to your webhook and readable any time via the free status endpoint with your read token. Fully anonymous: no account, no email, the returned credentials are all that exists.

Documentation

Whale-watch — standing 30-day wallet monitor ($5)

Register a 30-day watch on one EVM wallet: sweeps every 15 minutes across 6 chains, alerts when a transfer at or above your USD threshold moves in or out — POSTed to your webhook and/or polled from the free status endpoint. Fully anonymous: the returned watch_id + read_token are the only credentials that exist.

**Price:** $5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$5.75 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "address": {
      "description": "EVM wallet address to watch (0x…)",
      "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "chains": {
      "description": "CSV of chains. Default: all (ethereum,base,arbitrum,optimism,polygon,gnosis)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "threshold_usd": {
      "description": "Alert on transfers ≥ this USD value. Default 10000",
      "example": "10000",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "webhook": {
      "description": "Optional public https webhook — alerts POSTed as JSON",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "address"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/crypto/wallet-watch-status

Free default

Description

Poll a registered whale-watch: config, sweep health (provider failures shown loudly — degraded coverage is never an all-clear), and the last 100 alerts. Auth = watch_id + read_token from registration.

Documentation

Whale-watch status + alerts (free)

**Price:** Free per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

Free default

Authentication

Free PulseNetwork route; no API key, wallet or payment required.

Parameters

{
  "properties": {
    "token": {
      "description": "read_token from registration",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "watch_id": {
      "description": "UUID from registration",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "watch_id",
    "token"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/529-check

$0.57 default

Description

529 withdrawal & rollover checker — is THIS withdrawal qualified? K-12 (OBBBA $20k cap from 2026 + expanded categories), postsecondary credentialing, SECURE 2.0 Roth rollovers (15-yr/5-yr/earned-income/$35k gates computed), student-loan cap, non-qualified tax + 10% penalty math with exception routing — plus the California non-conformity traps (K-12, credentialing and 529→Roth are ALL CA-taxable + 2.5% despite being federal-tax-free). Deterministic, citation-pinned, no LLM.

Documentation

529 withdrawal & rollover checker (K-12/credentialing/Roth/nonqualified + CA traps)

Deterministic qualification check: OBBBA K-12 $20k cap (2026) + expanded categories, postsecondary credentialing, SECURE 2.0 Roth-rollover gates (15-yr account, 5-yr seasoning, earned-income + Roth-limit ceiling, $35k lifetime), student-loan $10k cap, nonqualified tax + 10% penalty with exception routing. California non-conformity computed: K-12, credentialing and 529-to-Roth are ALL CA-taxable + 2.5% additional tax despite federal treatment (FTB 3805P).

**Price:** $0.5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.57 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "account_age_years": {
      "description": "Roth rollover: account age for this beneficiary",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "amount": {
      "description": "Withdrawal/rollover amount",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "beneficiary_earned_income": {
      "description": "Roth rollover: beneficiary earned income",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "contributions_last_5y": {
      "description": "Roth rollover: contributions in the last 5 years (ineligible)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "earnings_portion": {
      "description": "1099-Q box 2 earnings (nonqualified math; default 40% estimate)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "marginal_rate": {
      "description": "Marginal federal rate % for nonqualified estimate (default 22)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "penalty_exception": {
      "description": "none|scholarship|death|disability|military_academy|education_credit",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "prior_roth_rollovers": {
      "description": "Roth rollover: lifetime amount already rolled",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "purpose": {
      "description": "college|k12|credentialing|roth_rollover|nonqualified|apprenticeship|student_loan",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "state": {
      "description": "State code; CA arms non-conformity traps",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "tax_year": {
      "description": "Default 2026 (K-12 cap is year-dependent)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "purpose",
    "amount"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/529-check-lite

$0.29 default

Description

529 withdrawal & rollover checker — LITE preview. Same deterministic engine as the full product: verdict + a one-line federal headline for THIS withdrawal (K-12 OBBBA cap, credentialing, SECURE 2.0 Roth rollover, student-loan cap, non-qualified) and a California-trap flag. Full federal/CA breakdown, all flags, and IRC/SECURE 2.0/OBBBA/FTB citations are in the full product. Deterministic, no LLM.

Documentation

529 withdrawal & rollover checker (lite tier)

**Price:** $0.25 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.29 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "account_age_years": {
      "description": "Roth rollover: account age for this beneficiary",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "amount": {
      "description": "Withdrawal/rollover amount",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "beneficiary_earned_income": {
      "description": "Roth rollover: beneficiary earned income",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "purpose": {
      "description": "college|k12|credentialing|roth_rollover|nonqualified|apprenticeship|student_loan",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "state": {
      "description": "State code; CA arms non-conformity traps",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "purpose",
    "amount"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/aotc-recovery

$0.57 default

Description

Missed AOTC recovery — did you leave up to $2,500/year of education credits unclaimed? Per-year screen across the OPEN 1040-X amendment window (TY2023–2025): exact §25A credit math (100% of first $2k + 25% of next $2k), MAGI phaseouts, 4-year/half-time/MFS eligibility gates, 40% refundable portion (pays even at $0 tax), 529-coordination and LLC-vs-AOTC traps. Deterministic, statute-cited, no LLM.

Documentation

Missed AOTC recovery — open-window 1040-X screen (up to $2,500/yr)

Per-year screen across the open amendment window (TY2023-2025): IRC §25A credit math (100% of first $2k + 25% of next $2k), MAGI phaseouts ($80-90k/$160-180k), 4-year + half-time + MFS gates, 40% refundable portion, 529-coordination and AOTC-vs-LLC traps, per-year 1040-X worksheets.

**Price:** $0.5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.57 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "claimed": {
      "description": "true if AOTC already claimed that year (list or single)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "completed_first_4_years": {
      "description": "true if first 4 postsecondary years done before these years",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "expenses": {
      "description": "Qualified expenses per year (comma list or single broadcast)",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "filing_status": {
      "description": "single|mfj|mfs|hoh (list or single)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "half_time": {
      "description": "false if under half-time enrollment",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "magi": {
      "description": "MAGI per year (comma list or single broadcast)",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "prior_aotc_years": {
      "description": "AOTC/Hope years used before the earliest input year",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "tax_years": {
      "description": "Comma list, e.g. 2023,2024,2025",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "tax_years",
    "expenses",
    "magi"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/compare

$0.14 default

Description

Compare tax by country, income tax rates, corporate tax, capital gains tax side by side. Worldwide guide ranking 2-3 jurisdictions for relocation, corporate setup, or investment structuring across income, corporate, and capital-gains regimes. Tax intelligence, not advice.

Documentation

Multi-country tax comparison

Side-by-side tax comparison of 2–3 countries for a specific scenario. Returns comparison matrix, country profiles, winner by use case, and optimal structure recommendation.

**Price:** $0.12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.14 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "countries": {
      "description": "Comma-separated list — e.g. Germany,UAE,Portugal",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country1": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country2": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country3": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "scenario": {
      "description": "digital nomad | individual relocation | entrepreneur | holding company | crypto investor | retiree",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/country

$0.12 default

Description

Income tax rates by country, corporate tax, capital gains tax, tax residency rules, crypto tax treatment for any jurisdiction. Worldwide guide giving a full tax overview of any country by scenario. Tax intelligence, not advice.

Documentation

Country tax system overview

Full tax system overview for any country — income brackets, corporate rate, capital gains, crypto treatment, VAT/GST, residency rules, special programs (NHR, HNWI, territorial systems), and verdict by taxpayer type.

**Price:** $0.1 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.12 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "country": {
      "description": "Country name — e.g. Germany, UAE, Portugal, Singapore",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "scenario": {
      "description": "Profile of interest — e.g. expat individual, digital nomad, holding company, crypto investor",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "country"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/crypto

$0.14 default

Description

Crypto tax by country, capital gains tax on crypto, DeFi tax, staking tax, NFT tax, CARF reporting obligations. Worldwide guide on how crypto is taxed by jurisdiction and activity. Tax intelligence, not advice.

Documentation

Cryptocurrency tax by jurisdiction

Crypto tax treatment across 15+ key jurisdictions — capital gains rates, holding period benefits, staking/mining income treatment, DeFi/NFT treatment, CARF/DAC8 reporting obligations, and most favorable jurisdictions.

**Price:** $0.12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.14 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "activity": {
      "description": "trading | hodling | staking | mining | DeFi | NFT | all",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "assets": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country": {
      "description": "Specific country focus — or omit for global comparison",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/expat

$0.14 default

Description

Expat tax obligations, FBAR, FATCA, FEIE foreign earned income exclusion, non-dom rules, exit tax for citizens living abroad. Worldwide guide on cross-border filing by nationality and destination. Tax intelligence, not advice.

Documentation

Expat tax obligations

Cross-border tax compliance by nationality — FBAR/FATCA/FEIE for Americans, UK non-dom rules (post-2025 reform), Canadian departure returns, Australian CGT departure events, exit taxes, and practical compliance action plan.

**Price:** $0.12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.14 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "destination": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "nationality": {
      "description": "e.g. American, British, Canadian, Australian, German",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "situation": {
      "description": "remote work | retirement | entrepreneur | investor | employment",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "nationality"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/nomad

$0.14 default

Description

Digital nomad tax, territorial-tax countries, 183-day residency rule, tax residency by jurisdiction. Worldwide guide mapping zero/low-tax nomad destinations, where remote income is taxed, and the expat obligations that follow. Tax intelligence, not advice.

Documentation

Digital nomad tax optimization

Comprehensive nomad tax strategy — territorial vs worldwide systems, top jurisdictions (UAE, Georgia, Paraguay, Portugal NHR/IFICI, etc.), 183-day traps, home country obligations by nationality, and practical action plan.

**Price:** $0.12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.14 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "focus": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "income_level": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "income_type": {
      "description": "remote employee | freelancer | entrepreneur | investor | content creator",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "nationality": {
      "description": "e.g. American, British, Canadian, German — affects home country obligations",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/state

$0.57 default

Description

US state income-tax answers grounded in the actual state code with machine-verified citations a CPA can check. California (R&TC/FTB/OTA, static two-era conformity, NOL suspension) and New York (Tax Law/20 NYCRR/DTF/Tribunal, rolling conformity + OBBBA decoupling, convenience rule, statutory residency, resident-credit trap). Citation-locked state tax intelligence, not advice. More states as corpora ship.

Documentation

US state income-tax answer — citation-verified (California + New York)

State income-tax answer grounded in the actual state-law corpus with machine-verified citations a CPA can check. California: R&TC statutes, FTB regulations/rulings/publications (incl. the Residency & Sourcing Technical Manual), OTA precedential opinions — static two-era IRC conformity (§17024.5 / SB 711), NOL suspension, residency safe harbors, nonresident sourcing. New York: Tax Law (Arts. 22/24-A/24-B/30), 20 NYCRR, DTF TSB-M/N-notices/publications (incl. the Nonresident Audit Guidelines), Tax Appeals Tribunal decisions and Gaied/Zelinsky/Tamagni court authority — rolling IRC conformity with OBBBA decoupling (N-26-1), the convenience-of-the-employer rule, statutory residency (183-day/PPA), the §620 resident-credit intangible trap, PTET, and NYC/Yonkers taxes. Findings that fail citation verification are dropped, never shown. More states as corpora ship.

**Price:** $0.5 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.57 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "question": {
      "description": "One concrete state-tax question",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "state": {
      "description": "State code — CA or NY (more states as corpora are ingested)",
      "enum": [
        "CA",
        "NY"
      ],
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "tax_year": {
      "description": "Tax year — drives the IRC-conformity era and era-gated rules (e.g. 2024 vs 2025)",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "state",
    "question"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/structure

$0.17 default

Description

Corporate tax structuring, holding company tax, IP box regimes, BEPS compliance, cross-border tax optimization. Worldwide guide on structuring international entities by objective, revenue, and jurisdictions. Tax intelligence, not advice.

Documentation

Corporate tax structuring

International corporate tax structures — holding company jurisdictions, IP box regimes (Netherlands 9%, Ireland KDB, Luxembourg, Malta), BEPS substance requirements, CFC rule analysis, transfer pricing, and Pillar Two implications.

**Price:** $0.15 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.17 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "annual_revenue": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "business_type": {
      "description": "technology | ecommerce | financial | media | manufacturing | consulting",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "jurisdictions": {
      "description": "Preferred jurisdictions — e.g. Netherlands,Luxembourg,UAE",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "objective": {
      "description": "e.g. IP holding for SaaS, holding company for investments, minimize corporate tax",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "shareholders": {
      "description": "Shareholder nationalities — affects CFC rules",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/treaty

$0.14 default

Description

Tax treaty lookup, withholding tax rates, double-taxation relief, residency tiebreaker rules, MLI modifications for any country pair. Worldwide guide returning treaty outcomes by transaction type. Tax intelligence, not advice.

Documentation

Tax treaty analysis

Bilateral DTT/DTA analysis — withholding rates for dividends/interest/royalties, capital gains rules, residency tiebreaker, MLI/BEPS modifications, and practical transaction scenarios. Covers no-treaty scenarios too.

**Price:** $0.12 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.14 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "country1": {
      "description": "Resident country",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country2": {
      "description": "Source country (where income arises)",
      "required": true,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "transaction_type": {
      "description": "dividends | interest | royalties | capital_gains | employment | pension | all",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [
    "country1",
    "country2"
  ],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗

GET/api/tax/vat

$0.12 default

Description

VAT/GST rates, sales tax, VAT registration thresholds, digital-services tax, OSS/IOSS compliance by country. Worldwide guide returning indirect-tax rates and thresholds across global jurisdictions for any sector or business type. Tax intelligence, not advice.

Documentation

Global VAT/GST intelligence

VAT/GST rates and compliance across 170+ jurisdictions — registration thresholds, digital services rules, EU OSS/IOSS, marketplace platform obligations, and e-invoicing mandates. Critical for SaaS, e-commerce, and digital businesses selling globally.

**Price:** $0.1 USDC per call

Calls go directly to PulseNetwork. Paid routes use the live x402 challenge; Apiosk never rewrites payTo or settles the payment.

Pricing

$0.12 default

Authentication

No account or API key. Pay PulseNetwork directly using the live x402 challenge. The challenge is authoritative for price, network, asset and payTo.

Parameters

{
  "properties": {
    "business_type": {
      "description": "marketplace | direct_seller | subscription | agency",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "country": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "lang": {
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    },
    "sector": {
      "description": "digital_services | SaaS | ecommerce | physical_goods | professional_services",
      "required": false,
      "type": "string",
      "x-parameter-location": "query"
    }
  },
  "required": [],
  "type": "object"
}

Links

External documentation ↗OpenAPI / Swagger ↗