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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
19,887measured
6,168proven reliable
US Tax Estimator Reliable (measured) · 100% over 4 checks Does the job (tested) · 4/4

Federal tax estimate, deadlines, FBAR/8938/3520 checks, §7702 screen, inherited-stock step-up.

MCP endpoint : https://my.yz-cpa.com/mcp · website · measurements and details
irs-taxpayer Not measured yet

44 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios.

Package npm : irs-taxpayer-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
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
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
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
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
opentax Being measured · 0% over 1 checks

Verifiable US tax oracle for AI agents: cited, machine-checkable federal and state tax computation

MCP endpoint : https://opentax.invaro.ai/mcp · 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
taxact-mcp Reliable (measured) · 100% over 42 checks Does the job (tested) · 41/42

Tax filing guidance, cost comparison, document checklists, and refund estimates by TaxAct.

MCP endpoint : https://mcp.taxact.com/mcp · 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
Arc & Ledger Tax Reference Reliable (measured) · 100% over 43 checks Does the job (tested) · 43/43

Read-only US tax reference for notices, deadlines, filing screens, and clearly labeled estimates.

MCP endpoint : https://mcp.arcandledger.com/directory/mcp · website · measurements and details
MLP Tax Computation Engine Flaky · 92% over 13 checks Does the job (tested) · 11/11

Deterministic MLP tax engine with IRS citations. 6 tools: basis, §751, estate, projections.

MCP endpoint : https://api.lucasandersen.ai/mcp · website · measurements and details
Suxession — French Inheritance Tax Engine Flaky · 96% over 24 checks

French inheritance tax engine: simulate, compare scenarios, savings estimate, premium optimizer.

MCP endpoint : https://suxession.fr/mcp · website · measurements and details
TaxCompass — Italian tax tools Being measured · 100% over 2 checks Real task being tested · 2/2

Sourced Italian tax tools for AI agents: cited primary-source search + a deterministic tax engine.

MCP endpoint : https://api.taxcompass.it/mcp · website · measurements and details
site Flaky · 83% over 6 checks

Exit Tax Estimator: the site's own MCP server — checker, enquiry (enquiry = a human handoff, not...

MCP endpoint : https://exittaxestimator.com/mcp · website · measurements and details
US Sales Tax Nexus Checker (bulk, Apify) Private (key required)

Bulk US sales tax economic nexus checks every state's rule, billed per check via Apify.

MCP endpoint : https://mcp.apify.com/?tools=nerolabs/us-sales-tax-nexus · website · measurements and details
QuantCalc Retirement Engine Flaky · 75% over 4 checks Does the job (tested) · 3/3

Retirement Monte Carlo, tax-aware withdrawal and Roth-conversion plans, and a 2026 return estimate.

MCP endpoint : https://mcp.quantcalc.app · website · measurements and details
databutler-us-rates Reliable (measured) · 100% over 17 checks Does the job (tested) · 17/17

US federal 2026 tax brackets, standard deductions, payroll and retirement limits, sourced.

MCP endpoint : https://databutler.dev/api/mcp/us-rates · website · measurements and details
Tax Numbers Flaky · 96% over 28 checks Does the job (tested) · 14/14

Get the US federal tax numbers right, with the IRS document each one comes from.

MCP endpoint : https://tax.openkrill.app/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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