Unofficial MCP server for Karbon practice management: contacts, work, time, invoices, payments.
To add karbon-mcp-server to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 4 environment variables, listed below.
Install
npx -y karbon-mcp-server@0.2.4Environment variables
KARBON_BEARER_TOKENSet in your MCP configKARBON_ACCESS_KEYSet in your MCP configKARBON_READ_ONLYSet in your MCP configKARBON_ALLOW_PAYMENT_WRITESSet in your MCP configInstall with your client
claude mcp add karbon --env KARBON_BEARER_TOKEN=<YOUR_KARBON_BEARER_TOKEN> --env KARBON_ACCESS_KEY=<YOUR_KARBON_ACCESS_KEY> --env KARBON_READ_ONLY=<YOUR_KARBON_READ_ONLY> --env KARBON_ALLOW_PAYMENT_WRITES=<YOUR_KARBON_ALLOW_PAYMENT_WRITES> -- npx -y karbon-mcp-server@0.2.4
Run this in a terminal to add the server to Claude Code.
What this does
karbon-mcp-server exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
KARBON_BEARER_TOKEN KARBON_ACCESS_KEY KARBON_READ_ONLY KARBON_ALLOW_PAYMENT_WRITES
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install karbon-mcp-server?
Run the Claude Code command in the install section to add karbon-mcp-server to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with karbon-mcp-server?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to karbon-mcp-server as well.
Does karbon-mcp-server need an API key?
Yes. Before it can run, set these environment variables: KARBON_BEARER_TOKEN, KARBON_ACCESS_KEY, KARBON_READ_ONLY, KARBON_ALLOW_PAYMENT_WRITES. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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