Take-home pay, employer cost and official tax tables for 37 countries, with sources.
Connect Runs on your machine
claude mcp add calcbloc-mcp -e CALCBLOC_API_KEY=<CALCBLOC_API_KEY> -e CALCBLOC_DATA_DIR=<CALCBLOC_DATA_DIR> -- npx -y [email protected]
{
"mcpServers": {
"calcbloc-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
"CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
}
}
}
}
{
"mcpServers": {
"calcbloc-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
"CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
}
}
}
}
{
"servers": {
"calcbloc-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
"CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
CALCBLOC_API_KEYOptional, secret | Optional; needed after 50 requests/day. Free key from https://calcbloc.com/developers/keys (5,000 requests/day). |
CALCBLOC_DATA_DIROptional | Optional folder with the CalcBloc tax-table data (https://calcbloc.com/data) for offline tax tables. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 13 Nov 2026 |
| Last updated | 13 Nov 2026 |
| Registry name | io.github.itmarkerz/calcbloc-mcp |
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