Install Arcaeon Ledger in Claude Code

What you need first

• Claude Code, installed.
• uv, which gives the uvx command the server starts with.

Steps

1. Run this in a terminal, in the project folder. It adds the server for you in that project; put --scope user after claude mcp add to have it in every project.

claude mcp add --transport stdio ledger -- uvx arcaeon-ledger==0.5.6 --log agent.log.jsonl

2. Start Claude Code and type /mcp: the server is listed with its state.

Check it worked

Ask Claude Code: List the tools of ledger.

If it does not start

spawn uvx ENOENT

uv is not on the PATH that Claude Code sees. Install it, or write the full path of uvx in the config.