Xcp runs on your own machine — the client starts it, so there is no endpoint to ping. 56 installs a week from npm. Last commit 11 Feb 2026.
Interact with Counterparty — the token protocol on Bitcoin. Query, compose, sign.
Today is the operative word: we check Xcp every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add mcp-server -- npx -y @21e14/mcp-server
{
"mcpServers": {
"mcp-server": {
"args": [
"-y",
"@21e14/mcp-server"
],
"command": "npx"
}
}
}
[mcp_servers.mcp-server]
command = "npx"
args = ["-y", "@21e14/mcp-server"]
{
"mcpServers": {
"mcp-server": {
"args": [
"-y",
"@21e14/mcp-server"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"mcp-server": {
"args": [
"-y",
"@21e14/mcp-server"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
COUNTERPARTY_NODE (Counterparty node URL (default: https://api.counterparty.io:4000)), SIGNER_PRIVATE_KEY (WIF-encoded private key for transaction signing), SIGNER_ADDRESS (Bitcoin address for the signing key).
The author declared them in the registry entry; get the values from the project itself.
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