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myfinance-mcp: Instructions file for Claude Code

CLAUDE.md

myfinance-mcp CLAUDE.md is an instructions file for Claude Code from alex-odoo/myfinance-mcp. It costs 720 tokens per session, scanned B, original, MIT.

A set of instructions for AI coding agents working on the myfinance-mcp personal-finance server.

In plain words
What is it for?
Understanding the repository, running local development and end-to-end tests, and following the maintainer’s controlled deployment process.
Why use it?
It gives the agent the project context, technology choices, local-development commands, testing steps, and deployment restrictions it needs to work safely.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is alex-odoo/myfinance-mcp's own configuration. It tells Claude Code how to work on myfinance-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything myfinance-mcp configures →

not rated 1repo 3d ago B scan 720 tokens original MIT
View source ↗ alex-odoo/myfinance-mcp myfinance-mcp.com
Reuse

Borrowing it

Nothing to install: this file belongs to alex-odoo/myfinance-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/alex-odoo/myfinance-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/alex-odoo/myfinance-mcp

Made for: Claude Code.

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Per session 720 This file is loaded in full into every session.
When invoked 720 The same file — it is already loaded in full.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00720 $0.00720
Opus 5 $0.00360 $0.00360
Sonnet 5 $0.00144 $0.00144
Haiku 4.5 $0.00072 $0.00072

Measured 10d ago against content hash cea7db06ad58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

myfinance-mcp CLAUDE.md scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

(chmod 600) - not in repo, not rsynced.
CLAUDE.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - MyFinance MCP

Guidance for AI coding agents working in this repo.

What it is

Personal finance tracking through a remote MCP server. The user's own AI client (Claude, ChatGPT, Cursor) is the UI: log expenses by voice or receipt photo, ask for stats in plain language. No app, no forms. The server owns the DATA and the MATH; the AI client owns the ADVICE.

Stack

  • Bun + TypeScript + @modelcontextprotocol/sdk (Streamable HTTP, stateless) + Express
  • OAuth 2.1 - PKCE + dynamic client registration
  • Prisma + Postgres (hosted instance: Supabase, eu-central-1)
  • Docker behind nginx
  • Hosted instance: https://myfinance-mcp.com (MCP endpoint POST /mcp, Bearer token)

Deploy (maintainer only - never manual)

./deploy.sh "what changed"

One-way Mac -> server: local bun run build + bun run e2e gate, commit + push main, rsync, docker compose build && up -d, nginx sync, health check. Never edit code on the box. Secrets live in app.env on the server (chmod 600) - not in repo, not rsynced.

Local dev

bun install
cp .env.example .env   # fill in your values
bun run dev            # server on :8788
bun run e2e            # self-contained E2E proof
bun run e2e https://myfinance-mcp.com      # same suite vs prod (E2E_EMAIL/E2E_PASSWORD)
bun run lint

Password hash: bun -e "console.log(await Bun.password.hash(process.argv[1]))" 'pw'

Database

Schema changes go through prisma db push. After any push that adds a table, re-run psql "$DATABASE_URL" -f prisma/rls.sql - Prisma creates tables with RLS off, and a public-schema table without RLS is exposed through the Supabase Data API to anyone with the anon key (see the header of that file).

Design rules (simplicity contract)

  • Zero setup, no forms, no category picking. Natural language / photo IS the input; category is a fixed enum the server enforces.
  • Money = numeric, never float. All statistics are SQL aggregates over amount_base; the LLM never does arithmetic over raw records.
  • Multi-currency invisible: store original amount + currency + fx rate frozen at log time; summaries answer in base currency.
  • Silence over noise. Budget alerts only when a budget exists and is exceeded.
  • Receipt photos never reach the server - the AI client parses them client-side, calls log_expense with structured data.
  • Every optional field has a sane default.

Read the full file on GitHub · 66 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 66 lines · 720 tokens per session scan B cea7db06ad58

Subscribe to this mod's changes

myfinance-mcp CLAUDE.md is an instructions file published in the GitHub repository alex-odoo/myfinance-mcp (1 stars, last pushed 3d ago), licensed MIT. It adds 720 tokens to every session, about $0.0036 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Finance and fintechbudgetingbunchatgptclaudeexpense-trackermcp
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