Billy MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 57 installs a week from npm. Last commit 10 Jul 2026.
Billy (billy.dk) accounting: invoices, journal entries, trial balance, with write protection.
Nothing serious here today
Today is the operative word: we check Billy MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
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 billy-mcp -e 'BILLY_ACCESS_TOKEN=<BILLY_ACCESS_TOKEN>' -- npx -y billy-mcp{
"mcpServers": {
"billy-mcp": {
"command": "npx",
"args": [
"-y",
"billy-mcp"
],
"env": {
"BILLY_ACCESS_TOKEN": "<BILLY_ACCESS_TOKEN>"
}
}
}
}[mcp_servers.billy-mcp]
command = "npx"
args = ["-y", "billy-mcp"]
env = { BILLY_ACCESS_TOKEN = "<BILLY_ACCESS_TOKEN>" }{
"mcpServers": {
"billy-mcp": {
"command": "npx",
"args": [
"-y",
"billy-mcp"
],
"env": {
"BILLY_ACCESS_TOKEN": "<BILLY_ACCESS_TOKEN>"
}
}
}
}{
"servers": {
"billy-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"billy-mcp"
],
"env": {
"BILLY_ACCESS_TOKEN": "<BILLY_ACCESS_TOKEN>"
}
}
}
}Put your own value in place of
<BILLY_ACCESS_TOKEN> (Billy API access token (create at mit.billy.dk -> Settings -> Access tokens)).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
BILLY_WRITE_MODE (Write protection: read-only, confirm (default, requires elicitation-capable host), or full), BILLY_ORGANIZATION_ID (Billy organization ID (auto-resolved when the token maps to a single company)), BILLY_LOCALE (Response language: en_US, da_DK, fr_FR, nl_NL, or de_DE).
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Billy MCP — questions
Answers built from our own checks of this server.