Polymarket Guard runs on your own machine — the client starts it, so there is no endpoint to ping. 54 installs a week from npm. Last commit 17 Jun 2026.
Polymarket prediction markets — buy/sell positions in USDC. LemonCake pay-per-call billing.
We read the source, 5 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.
пакет polymarket-guard-mcp ссылается на evidai/lemon-cake
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
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.
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 polymarket-guard -- npx -y polymarket-guard-mcp
{
"mcpServers": {
"polymarket-guard": {
"command": "npx",
"args": [
"-y",
"polymarket-guard-mcp"
]
}
}
}
[mcp_servers.polymarket-guard]
command = "npx"
args = ["-y", "polymarket-guard-mcp"]
{
"mcpServers": {
"polymarket-guard": {
"command": "npx",
"args": [
"-y",
"polymarket-guard-mcp"
]
}
}
}
{
"servers": {
"polymarket-guard": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"polymarket-guard-mcp"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
POLYMARKET_PRIVATE_KEY (Polygon wallet private key for trading. Leave unset for read-only mode), LEMON_CAKE_BUYER_JWT (LemonCake Buyer JWT for pay-per-call billing).
Insider trades, prediction-market odds, US macro and x402 data. Pays per call in USDC on Base.
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Self-hosted MCP server for AI agent trading on Polymarket prediction markets
Polymarket orders from your own machine: market, balance, positions, buy/sell with limits.
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Answers built from our own checks of this server.