spendctl for Grok
dev.spendctl/spendctl
Spend policy for AI agents that pay (x402, MPP). Login-free sandbox, real sidecar, no real funds.
client:Grok
transport:streamable-http
tools:8
Install spendctl in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"spendctl": {
"type": "http",
"url": "https://mcp.spendctl.dev/mcp"
}
}
}Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs