Countersign
Kill switch + spend guard for AI agents that spend money, across every wallet vendor at once.
Install
npmstdio
npx -y @countersign/mcp Client config (Claude Desktop, Cursor, Windsurf and most MCP clients)
{
"mcpServers": {
"io-github-countersign-network-countersign": {
"command": "npx",
"args": [
"-y",
"@countersign/mcp"
]
}
}
} Source: official MCP Registry record · registry name io.github.countersign-network/countersign · published 2026-08-23 · updated 2026-08-23. Not an endorsement; review the code before connecting it to anything sensitive.