beancount-mcp-server
MCP server for Beancount ledgers that enables querying with BQL, listing accounts, getting balances, searching transactions, validating the ledger, and appending new entries.
README
beancount-mcp-server
MCP (Model Context Protocol) server for Beancount ledgers. Lets MCP clients (Claude Code, Claude Desktop, etc.) query a ledger with BQL and append new entries.
Tools
| Tool | Description |
|---|---|
run_query |
Run an arbitrary BQL query |
list_accounts |
List accounts with open/close dates and currencies |
get_balances |
Per-account balances, filterable by prefix and date |
search_transactions |
Search postings by text, account, and date range |
check_ledger |
Validate the ledger (bean-check equivalent) |
add_transaction |
Append a new transaction (validated before writing) |
append_entry |
Append raw Beancount directive text (validated before writing) |
Usage
The ledger path is taken from the first CLI argument, or from $BEANCOUNT_FILE.
uvx beancount-mcp-server /path/to/main.beancount
Claude Code / Claude Desktop config
{
"mcpServers": {
"beancount": {
"command": "uvx",
"args": ["beancount-mcp-server", "/path/to/main.beancount"]
}
}
}
Docker
docker build -t beancount-mcp-server .
docker run -i --rm -v /path/to/ledger:/data beancount-mcp-server
The image expects the main file at /data/main.beancount (override via BEANCOUNT_FILE).
Development
uv sync
uv run beancount-mcp-server /path/to/main.beancount
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