Calcport runs on your own machine — the client starts it, so there is no endpoint to ping. 229 installs a week from npm. Last commit 27 Oct 2026.
Safe arithmetic: evaluate expressions and add, subtract, multiply, divide.
Nothing serious here today
Today is the operative word: we check Calcport every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add calcport -- npx -y @reneturcios/calcport{
"mcpServers": {
"calcport": {
"command": "npx",
"args": [
"-y",
"@reneturcios/calcport"
]
}
}
}[mcp_servers.calcport]
command = "npx"
args = ["-y", "@reneturcios/calcport"]{
"mcpServers": {
"calcport": {
"command": "npx",
"args": [
"-y",
"@reneturcios/calcport"
]
}
}
}{
"servers": {
"calcport": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@reneturcios/calcport"
]
}
}
}Alternatives to Calcport
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Zero-dependency AST safe mathematical and boolean expression evaluator and validator
Calcport — questions
Answers built from our own checks of this server.