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The real catalog of tools for AI agents

Google tells you what exists. Faceabot tells you what holds up.

44,737real tools
29,284callable over HTTPS
19,874measured
6,054proven reliable
Quarterly Tax Calculator Reliable (measured) · 100% over 13 checks

US federal + state quarterly estimated tax estimates, SE tax, and quarterly payment due dates.

MCP endpoint : https://mcp.quarterlytax.al157.xyz/mcp · website · measurements and details
Jackpot Calculator Reliable (measured) · 100% over 19 checks Does the job (tested) · 19/19

Estimate US lottery taxes, compare cash and annuity, split pool prizes and calculate jackpot odds.

MCP endpoint : https://jackpot-calculator-mcp.jiankn.workers.dev/mcp · website · measurements and details
Calcuris Not measured yet

Tax calculators for US, UK, Canada, Australia: income tax, property tax, stamp duty.

Package npm : calcuris-mcp · website · measurements and details
Arc & Ledger Tax Tools Reliable (measured) · 100% over 42 checks Does the job (tested) · 42/42

Enrolled Agent tax tools: IRS notices, FBAR, LLC vs S-Corp, quarterly estimates & more.

MCP endpoint : https://mcp.arcandledger.com/mcp · website · measurements and details
tax-calculator-ai-mcp Not measured yet

AI-powered tax calculator ai MCP server for agents. Supports calculate income tax, calculate vat

Package pypi : tax-calculator-ai-mcp · website · measurements and details
Xearno Tools Being measured · 100% over 2 checks Real task being tested · 2/2

Money, tax & business calculators kept current with 2026 rules — plus operator insights.

MCP endpoint : https://xearno.tools/mcp · website · measurements and details
US Mortgage Calculator Flaky · 96% over 23 checks Does the job (tested) · 22/22

US mortgage calculator and amortization API with 50-state property tax, PMI, and affordability data.

MCP endpoint : https://www.usmortgagecalc.com/mcp · website · measurements and details
HomeCalc — Canadian Mortgage & Tax Calculators Reliable (measured) · 100% over 12 checks Does the job (tested) · 12/12

Canadian mortgage, tax & land transfer calculators: 12 read-only tools, LTT for all 13 provinces.

MCP endpoint : https://homecalc.ca/api/mcp · website · measurements and details
quaderno Reliable (measured) · 100% over 3 checks

MCP server for Quaderno — tax-rate calculation, invoices, contacts, products, receipts & expenses.

MCP endpoint : https://quaderno.usefulapi.io/mcp · website · measurements and details
OSVcalc Flaky · 80% over 5 checks Does the job (tested) · 4/4

Czech OSVČ tax calculator: income tax, social and health insurance, VAT, paušální daň.

MCP endpoint : https://osvcalc.cz/api/mcp · website · measurements and details
Hacé Cuentas — Free Calculators Flaky · 75% over 4 checks

Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.

MCP endpoint : https://hacecuentas.com/mcp · website · measurements and details
FreeToolHub Reliable (measured) · 100% over 41 checks

44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.

MCP endpoint : https://freetoolhub.org/api/mcp · website · measurements and details
Klar Calculators Private (key required)

Jordan & GCC labour-law, tax and finance calculators for AI agents — 36 deterministic tools.

MCP endpoint : https://mcp.worldly.pro/mcp · website · measurements and details
tax-retirement Flaky · 86% over 7 checks Does the job (tested) · 6/6

Calcul fiscal (IR, IFI, PER, plus-value) et retraite français — 32 régimes, sourcé et daté.

MCP endpoint : https://app.qotien.fr/api/fiscal/v1/mcp · website · measurements and details
tax-calc Not measured yet

US federal income tax estimates: brackets, marginal rate, effective rate. Planning values.

Package mcpb : https://github.com/theluckystrike/mcp-servers/releases/download/v0.22.0/tax-calc.mcpb · website · measurements and details
Gig Worker Tax Toolkit Private (key required)

2026 quarterly tax estimates, SE tax, safe harbor and mileage for 1099 gig workers.

MCP endpoint : https://gig-tax-mcp.mcpize.run/mcp · website · measurements and details
Numeratica — financial planning calculations Being measured · 0% over 2 checks

Deterministic US financial planning: retirement Monte Carlo, Roth conversion, RMD, tax, IRMAA, SS

MCP endpoint : https://api.numeratica.com/mcp · website · measurements and details
Bindler: UAE Corporate Tax, EU AI Act and CBAM calculators Reliable (measured) · 100% over 43 checks Does the job (tested) · 40/40

Computes UAE Corporate Tax, EU AI Act risk class and CBAM cost, citing the Article behind each line

MCP endpoint : https://bindler.co/mcp/rpc · website · measurements and details
hopi Being measured · 0% over 1 checks

Free UK calculators, converters and validators (tax, VAT, stamp duty, dates, units), read-only.

MCP endpoint : https://mcp.hopi.co.uk/mcp · website · measurements and details
SavingsLast retirement calculators Flaky · 96% over 22 checks Does the job (tested) · 21/21

Retirement drawdown, 72(t) SEPP, RMD, Roth conversion, Social Security and state-tax calculators.

MCP endpoint : https://savingslast.com/mcp · website · measurements and details

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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