Haveibeenpwned MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 636 installs a week from npm. Last commit 2 Nov 2026.
The Have I Been Pwned breach catalogue: every known data breach, one breach in detail and the
Nothing serious here today
Today is the operative word: we check Haveibeenpwned MCP 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 haveibeenpwned-mcp -- npx -y @mrfentmen/haveibeenpwned-mcp{
"mcpServers": {
"haveibeenpwned-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/haveibeenpwned-mcp"
]
}
}
}[mcp_servers.haveibeenpwned-mcp]
command = "npx"
args = ["-y", "@mrfentmen/haveibeenpwned-mcp"]{
"mcpServers": {
"haveibeenpwned-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/haveibeenpwned-mcp"
]
}
}
}{
"servers": {
"haveibeenpwned-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mrfentmen/haveibeenpwned-mcp"
]
}
}
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Haveibeenpwned MCP — questions
Answers built from our own checks of this server.