once
Run a side effect exactly once under retries, redelivery, and concurrent workers.
Install
PyPIstdio
uvx once-kernel Client config (Claude Desktop, Cursor, Windsurf and most MCP clients)
{
"mcpServers": {
"io-github-aurumflux20-once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Source: official MCP Registry record · registry name io.github.aurumflux20/once-kernel · published 2026-08-07 · updated 2026-08-07. Not an endorsement; review the code before connecting it to anything sensitive.