SMX (Space Markets) testnet event markets and the Space Markets Index (SMI). Base Sepolia only.
Connect Runs on your machine
claude mcp add smx-mcp -e X402_PRIVATE_KEY=<X402_PRIVATE_KEY> -e SMX_RPC=<SMX_RPC> -- npx -y [email protected]{
"mcpServers": {
"smx-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>",
"SMX_RPC": "<SMX_RPC>"
}
}
}
}{
"mcpServers": {
"smx-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>",
"SMX_RPC": "<SMX_RPC>"
}
}
}
}{
"servers": {
"smx-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>",
"SMX_RPC": "<SMX_RPC>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
X402_PRIVATE_KEYOptional, secret | Optional. Your own Base Sepolia TEST wallet key holding Circle testnet USDC, used only by the paid tools ($0.01 testnet USDC per call, no real value). Never use a wallet with real funds. |
SMX_RPCOptional | Optional Base Sepolia RPC URL (default https://sepolia.base.org). |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 2 Oct 2026 |
| Last updated | 2 Oct 2026 |
| Registry name | io.github.Space-Markets-HQ/smx-mcp |
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