SaturnZap runs on your own machine — the client starts it, so there is no endpoint to ping. 53 installs a week from pypi. Last commit 25 Sep 2026.
Non-custodial Bitcoin Lightning (LDK) wallet for AI agents — pays L402 APIs from CLI or MCP.
What the code does
We read the source, 4 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
result = subprocess.run( # noqa: S603
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
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 saturnzap -e 'SZ_PASSPHRASE=<SZ_PASSPHRASE>' -- uvx saturnzap{
"mcpServers": {
"saturnzap": {
"command": "uvx",
"args": [
"saturnzap"
],
"env": {
"SZ_PASSPHRASE": "<SZ_PASSPHRASE>"
}
}
}
}[mcp_servers.saturnzap]
command = "uvx"
args = ["saturnzap"]
env = { SZ_PASSPHRASE = "<SZ_PASSPHRASE>" }{
"mcpServers": {
"saturnzap": {
"command": "uvx",
"args": [
"saturnzap"
],
"env": {
"SZ_PASSPHRASE": "<SZ_PASSPHRASE>"
}
}
}
}{
"servers": {
"saturnzap": {
"type": "stdio",
"command": "uvx",
"args": [
"saturnzap"
],
"env": {
"SZ_PASSPHRASE": "<SZ_PASSPHRASE>"
}
}
}
}Put your own value in place of
<SZ_PASSPHRASE> (Passphrase used to decrypt the local wallet seed).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
SZ_MCP_MAX_SPEND_SATS (Hard per-request MCP amount-plus-fee ceiling; default 1000 sats).
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SaturnZap — questions
Answers built from our own checks of this server.