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The real catalog of tools for AI agents

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

46,632real tools
30,804callable over HTTPS
21,040measured
6,883proven reliable
MonsiTools Calculators Reliable (measured) · 100% over 49 checks Does the job (tested) · 49/49

Find and run exact business, finance and SaaS calculators instead of guessing the math.

MCP endpoint : https://monsitools.com/mcp · website · measurements and details
Cruncher Not measured yet

Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion.

Package npm : @slbdn/cruncher-mcp · website · measurements and details
Scientific-Research-Oracle Being measured · 0% over 1 checks

Scientific literature analyzer and clinical search aggregator.

MCP endpoint : https://science-oracle-mcp.vercel.app/api/mcp · measurements and details
math Not measured yet

Calculator, units, statistics for AI agents

Package npm : @rog0x/mcp-math-tools · website · measurements and details
Scientific Math Calculator MCP Private (key required)

Safe scientific calculator MCP for numeric expressions

MCP endpoint : https://mcp.nexlab.net/mcp/scientific-math-calculator · website · measurements and details
Uncertainty Calculator Being measured · 50% over 2 checks

Evaluate mathematical expressions and propagate measurement uncertainty.

MCP endpoint : https://uncertaintycalculator.com/api/mcp · website · measurements and details
Scientific Calculator Private (key required)

Exact arithmetic, algebra, calculus, physics, chemistry and finance with a checkable formula.

MCP endpoint : https://scientific-calculator-mcp.saifs.ai/mcp · website · measurements and details
metamodel Flaky · 95% over 20 checks Does the job (tested) · 19/19

AI-callable calculators and engineering models with real formulas. No hallucinated math.

MCP endpoint : https://www.metamodel.app/api/mcp · website · measurements and details
NestingCalc Calculators Flaky · 93% over 28 checks

37 cutting and woodworking calculators: cut lists, sheet nesting, timber volume, kiln drying

MCP endpoint : https://mcp.nestingcalc.com/mcp · website · measurements and details
PeptideLab Calculator Being measured · 50% over 2 checks Real task being tested · 1/1

Research-use peptide reconstitution & dosing calculators for 15 compounds. Not medical advice.

MCP endpoint : https://rigorpeptides.com/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
Calculator Tools MCP Private (key required)

Publish a live calculator, tracker, tool, or game from Cursor, Claude, or ChatGPT.

MCP endpoint : https://api.calculator.tools/mcp/ · website · measurements and details
Calculate.co.nz NZ Calculators Flaky · 89% over 9 checks

Search and run New Zealand tax, KiwiSaver, mortgage and property calculators

MCP endpoint : https://mcp.calculate.co.nz/mcp · website · measurements and details
LetterLab Word Solver Being measured · 100% over 1 checks Real task being tested · 1/1

Word game solver & unscrambler

MCP endpoint : https://word-solver.zovo.one/mcp · website · measurements and details
Jarroba Tools · Calculation Not measured yet

Maths a model gets wrong: units with dimensional checking, equations, sheets. 5 tools, local.

Package npm : @jarroba/mcp-calc · website · measurements and details
Fengshui Calculator Being measured · 100% over 2 checks

Verifiable Chinese calendar & feng shui: BaZi, flying stars, Kua, almanac. SHA-256 replayable.

MCP endpoint : https://fengshuicalculator.com/v1/mcp · measurements and details
SparkQuote NEC calculators Reliable (measured) · 100% over 21 checks Fails real tasks · 0/21

NEC 2023 electrical calculators: wire size, ampacity, voltage drop, conduit fill, box fill, load.

MCP endpoint : https://sparkquote.ai/mcp · website · measurements and details
Aman-Amith-Shastry-scientific_computation_mcp Private (key required)

This MCP server enables users to perform scientific computations regarding linear algebra and vect…

MCP endpoint : https://server.smithery.ai/@Aman-Amith-Shastry/scientific_computation_mcp/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
Corollary — scientific AI models, tools and databases Flaky · 67% over 3 checks Real task being tested · 2/2

Find open biology and chemistry AI models, bioinformatics tools and databases, and run them online.

MCP endpoint : https://corollary-labs.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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