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Create short links, track clicks and attribute sales — 8 tools backed by the Subtraq API.
MCP endpoint :https://subtraq.co/api/mcp · website · measurements and detailsDate arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.
MCP endpoint :https://apished.com/mcp/v1/datemath · website · measurements and detailsNumber utilities MCP.
MCP endpoint :https://gateway.pipeworx.io/numbers/mcp · website · measurements and detailsAI-callable calculators and engineering models with real formulas. No hallucinated math.
MCP endpoint :https://www.metamodel.app/api/mcp · website · measurements and detailsLuhn checksum, number discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/luhn-ok/mcp · website · measurements and detailsNative Apple Numbers on macOS: formulas, guided charts, guarded edits and CSV. No Excel conversion.
Package mcpb :https://github.com/viames/numbers-native/releases/download/v0.5.0/numbers-native-0.5.0.mcpb · website · measurements and detailsRFC number shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/rfc-number-ok/mcp · website · measurements and detailsSafe scientific calculator MCP for numeric expressions
MCP endpoint :https://mcp.nexlab.net/mcp/scientific-math-calculator · website · measurements and detailsEvaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.
MCP endpoint :https://apished.com/mcp/v1/rpncalc · website · measurements and detailsBenjamin Graham's fair-value ceiling and margin of safety for a US-listed ticker.
MCP endpoint :https://www.edgethirteen.com/api/mcp/graham-number-calculator · website · measurements and detailsMach number to m/s at STP, number discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/mach-ms/mcp · website · measurements and detailsUTC ISO week number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/week-number/mcp · website · measurements and detailsCurrent source-cited 2026 US tax constants and calculators for AI agents; every answer cites IRS.
MCP endpoint :https://verified-numbers.mcpize.run · website · measurements and detailsArithmetic consistency checks and cross-footing validation for financial statements
Package mcpb :https://github.com/Alpha-Park/genpark-complex-financial-formula-audit-validator-skill/releases/download/v1.0.1/genpark-financial-audit.mcpb · website · measurements and detailsUTC century number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/century/mcp · website · measurements and detailsiss-number MCP — wraps StupidAPIs (keyless — no credential needed)
MCP endpoint :https://gateway.pipeworx.io/iss-number/mcp · website · measurements and detailsmercury-number MCP — wraps StupidAPIs (keyless — no credential needed)
MCP endpoint :https://gateway.pipeworx.io/mercury-number/mcp · website · measurements and detailsphoenix-number MCP — wraps StupidAPIs (keyless — no credential needed)
MCP endpoint :https://gateway.pipeworx.io/phoenix-number/mcp · website · measurements and detailsyesterdays-number MCP — wraps StupidAPIs (keyless — no credential needed)
MCP endpoint :https://gateway.pipeworx.io/yesterdays-number/mcp · website · measurements and detailsISO/IEC standard number shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/std-number-ok/mcp · website · measurements and detailsAI 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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