Truth Table MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 503 installs a week from npm. Last commit 2 Nov 2026.
Evaluate boolean logic expressions and build full truth tables - fully local.
Today is the operative word: we check Truth Table MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 truth-table-mcp -- npx -y @mrfentmen/truth-table-mcp
{
"mcpServers": {
"truth-table-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/truth-table-mcp"
]
}
}
}
[mcp_servers.truth-table-mcp]
command = "npx"
args = ["-y", "@mrfentmen/truth-table-mcp"]
{
"mcpServers": {
"truth-table-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/truth-table-mcp"
]
}
}
}
{
"servers": {
"truth-table-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mrfentmen/truth-table-mcp"
]
}
}
}
Build, explain, and validate cron expressions
Evaluate, simplify, and differentiate mathematical expressions.
Query JSON documents with JSONPath expressions, list every path and count matches - fully local.
Test, describe, and validate regular expressions locally. No network and no key.
Safe arithmetic: evaluate expressions and add, subtract, multiply, divide.
Zero-dependency AST safe mathematical and boolean expression evaluator and validator
Evaluate a+b style arithmetic. Expression discarded.
Evaluate poker hands, compare players and pick the best five from seven cards - fully local.
Answers built from our own checks of this server.