POPCORN Witness Verifier for Grok
io.github.violetclaire/popcorn-tain-verifier
MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.
client:Grok
transport:streamable-http
tools:1
Install POPCORN Witness Verifier in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"popcorn-tain-verifier": {
"type": "http",
"url": "https://popcorn-tain-verify-mcp-v2.violetherod.workers.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