once
Rank #51,703io.github.aurumflux20/once-kernel
Run a side effect exactly once under retries, redelivery, and concurrent workers.
once is a Model Context Protocol (MCP) server published by aurumflux20. It ranks #51,703 of 132,113 servers tracked on MCP Toplist. once is listed on Official MCP, with 3 tracked versions. It was first listed on Aug 6, 2026 and most recently updated on Aug 7, 2026.
Ranks ahead of 80,410 of 132,113 servers on MCP Toplist.
Use once
No credentials or required configuration declared — add it to your MCP client and go.
claude mcp add once-kernel -- uvx once-kernel[mcp_servers.once-kernel]
command = "uvx"
args = ["once-kernel"]Add to ~/.codex/config.toml.
{
"mcpServers": {
"once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Add to claude_desktop_config.json (Settings → Developer → Edit Config).
{
"mcpServers": {
"once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).
{
"servers": {
"once-kernel": {
"type": "stdio",
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Save as .vscode/mcp.json in your workspace.
{
"mcpServers": {
"once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
{
"mcpServers": {
"once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Show your rank
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[](https://mcptoplist.com/server/io.github.aurumflux20%2Fonce-kernel)<a href="https://mcptoplist.com/server/io.github.aurumflux20%2Fonce-kernel"><img src="https://mcptoplist.com/badge/io.github.aurumflux20%2Fonce-kernel.svg" alt="MCP Toplist: Top 50% of 132,113" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 1 registry
aurumflux20
Other servers by aurumflux20
View all aurumflux20 servers →Available versions (3)
| Version | Published |
|---|---|
| 0.2.1 | Aug 7, 2026 |
| 0.2.0 | Aug 6, 2026 |
| 0.1.1 | Aug 6, 2026 |
Frequently asked questions
- Who maintains once?
- once is maintained by aurumflux20, which publishes 3 MCP servers (9 total versions) tracked on MCP Toplist.
- Is once listed on the Official MCP Registry?
- Yes — once is listed on the Official MCP Registry.
- How many versions does once have?
- MCP Toplist tracks 3 versions of once, most recently published on Aug 7, 2026.
- Where can I find the source code for once?
- The source code for once is hosted at github.com/aurumflux20/once-kernel.
Do you run this server?
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