Receipt — sign an agent's work, verify it offline for Grok
io.github.ecstatica/ggbank-receipt
Ed25519 receipts over work artifacts: issue and verify offline, no account, no chain, no network.
client:Grok
transport:streamable-http
runtime:mcpb
tools:2
Install Receipt — sign an agent's work, verify it offline in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"ggbank-receipt": {
"type": "http",
"url": "https://receipt.whirlwindcorp.com/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