# Aethelgard Ledger

Double-entry accounting engine for autonomous agents. It rejects unbalanced journal lines and secures records inside local SHA-256 chains.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed
- Author: aethelgardfinance
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/aethelgardfinance/aethelgard-ledger
- Updated: 2026-10-09
- HTML: https://affpapa.org/en/nevibecode/mcp/aethelgard-ledger

## What it does

The engine runs locally and enforces core accounting constraints across 9 jurisdictions. Every posting requires matching debits and credits. When figures differ, the server turns down the entry with an explicit reason. Available tools cover account creation across standard categories like `ASSET` and `LIABILITY`, subsidiary assignments, and balance reporting.

Each journal links into a per-entity SHA-256 chain. Editing the ledger file outside the engine invalidates the integrity check called via `verify_integrity`. Records stay inside local operating system folders by default. You can change the directory using `--vault <DIR>` or launch disposable sessions with `--ephemeral`.

The database file is unencrypted on your disk. Group consolidation sums line values directly by account code without removing intercompany balances.

## Install

### Claude Code (native platform)

**Install**
- The MCP registry has no launch command for it: see the repository README

## When to use it
- maintain double-entry books through an automated agent
- reject transactions when debits and credits do not balance
- generate combined trial balances across parent and subsidiary entities
- verify ledger integrity against tampering using SHA-256 chains

## Example prompts
- Create PropCo Ltd with bank and rental income accounts in GBP
- Record October rent for 1500 GBP and show the trial balance
- Run verify_integrity and print the chain hash

## Similar
- [World Monitor](https://affpapa.org/en/nevibecode/mcp/world-monitor.md) — MCP server · ★ 89609
- [CCXT](https://affpapa.org/en/nevibecode/mcp/ccxt.md) — MCP server · ★ 44591
- [Finance Toolkit](https://affpapa.org/en/nevibecode/mcp/finance-toolkit.md) — MCP server · ★ 5469
- [EdgarTools](https://affpapa.org/en/nevibecode/mcp/edgartools.md) — MCP server · ★ 2817
- [LetsFG — Flights & Hotels](https://affpapa.org/en/nevibecode/mcp/letsfg-flights-hotels.md) — MCP server · ★ 2197
- [AutoTS](https://affpapa.org/en/nevibecode/mcp/autots.md) — MCP server · ★ 1434

---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md