LeanWarp runs on your own machine — the client starts it, so there is no endpoint to ping. 730 installs a week from pypi. Last commit 6 Nov 2026.
Check and verify Lean 4 proofs on hosted, warm Lean and Mathlib workers.
What the code does
We read the source, 1 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.
return subprocess.run( # noqa: S603 - fixed arguments, no shell
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 leanwarp -e 'LEANWARP_API_KEY=<LEANWARP_API_KEY>' -- uvx leanwarp{
"mcpServers": {
"leanwarp": {
"command": "uvx",
"args": [
"leanwarp"
],
"env": {
"LEANWARP_API_KEY": "<LEANWARP_API_KEY>"
}
}
}
}[mcp_servers.leanwarp]
command = "uvx"
args = ["leanwarp"]
env = { LEANWARP_API_KEY = "<LEANWARP_API_KEY>" }{
"mcpServers": {
"leanwarp": {
"command": "uvx",
"args": [
"leanwarp"
],
"env": {
"LEANWARP_API_KEY": "<LEANWARP_API_KEY>"
}
}
}
}{
"servers": {
"leanwarp": {
"type": "stdio",
"command": "uvx",
"args": [
"leanwarp"
],
"env": {
"LEANWARP_API_KEY": "<LEANWARP_API_KEY>"
}
}
}
}Put your own value in place of
<LEANWARP_API_KEY> (Your LeanWarp API key (lw_live_...), from https://isagoge.in/dashboard?section=keys).
The author’s registry entry marks it as required.
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LeanWarp — questions
Answers built from our own checks of this server.