Google tells you what exists. Faceabot tells you what holds up.
SemVer numbers only
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/semver-parse/mcp · website · measurements and detailsRead-only phone intelligence for AI voice agents — line type, risk, DNC, signed receipts.
MCP endpoint :https://numbers.online/api/v1/mcp · website · measurements and detailsParse, compare, and sort semantic version numbers locally. No network and no key.
Package npm :semver-mcp · website · measurements and detailsNumber utilities MCP.
MCP endpoint :https://gateway.pipeworx.io/numbers/mcp · website · measurements and detailsRFC number shape
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/rfc-number-ok/mcp · 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 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 detailsISO week number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/iso-week/mcp · website · measurements and detailsJulian day number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/julian-day/mcp · website · measurements and detailsUnix day number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/unix-day/mcp · website · measurements and detailsUnix hour number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/unix-hour/mcp · website · measurements and detailsUnix week number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/unix-week/mcp · website · measurements and detailsUnix year number
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/unix-year/mcp · website · measurements and detailsJulian day number band
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/jd-n/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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