Ethereum Transaction Builder runs on your own machine — the client starts it, so there is no endpoint to ping. 82 installs a week from pypi. Last commit 5 Nov 2026.
Build and sign Ethereum transactions - EIP-1559, gas estimation, RLP, ERC-20 transfers
We read the source, 2 d ago · rules 995398eba69f
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
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Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
Today is the operative word: we check Ethereum Transaction Builder 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 transaction-mcp-server -- uvx transaction-mcp-server
{
"mcpServers": {
"transaction-mcp-server": {
"command": "uvx",
"args": [
"transaction-mcp-server"
]
}
}
}
[mcp_servers.transaction-mcp-server]
command = "uvx"
args = ["transaction-mcp-server"]
{
"mcpServers": {
"transaction-mcp-server": {
"command": "uvx",
"args": [
"transaction-mcp-server"
]
}
}
}
{
"servers": {
"transaction-mcp-server": {
"type": "stdio",
"command": "uvx",
"args": [
"transaction-mcp-server"
]
}
}
}
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Answers built from our own checks of this server.