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myfinance-mcp

by alex-odoo

MyFinance MCP

A remote MCP server for personal finance, an AI expense tracker for Claude, ChatGPT, Codex and Cursor - log expenses by talking, snap receipt photos, import statements from any bank (CSV, PDF or a screenshot), and get budgets, trends and net worth computed for you, in 150+ currencies.

Website: myfinance-mcp.com · Free while in beta · Built by Rteam

Quick Start

Already hosted and ready to use - just connect it to your MCP client:

https://myfinance-mcp.com/mcp

On Claude: Customize → Connectors → + Add → Add custom connector → name it and paste the URL → Continue → Authentication: Sign in now (if the form asks for an OAuth client, keep Use Claude's published identity (Recommended); Register automatically works too) → Add. Never choose "Use your own OAuth client" or fill a Client ID/Secret - that breaks sign-in. Works on every Claude plan (Free allows one custom connector).

On ChatGPT (web): turn on Developer mode (Settings → Apps → Advanced settings), then Plugins → + → Add custom MCP server (older menu: Settings → Apps → Create) → paste the URL → OAuth, client ID/secret empty → create and sign in → type @ in a chat to use it. Per OpenAI's help center, custom MCP servers with write actions (needed for logging) are available on Business, Enterprise and Edu; Pro gets read-only access; the help center does not list Developer mode for Free, Go or Plus, so if you do not see it, use Codex.

On Cursor: Add to Cursor, or add "myfinance": { "url": "https://myfinance-mcp.com/mcp" } under mcpServers in ~/.cursor/mcp.json, then click Connect next to MyFinance in Customize.

On Codex (included in every ChatGPT plan, Free too):

codex mcp add myfinance --url https://myfinance-mcp.com/mcp
codex mcp login myfinance

On first connect you sign in with Google or with a one-time code sent to your email; that first sign-in creates your MyFinance account. Your data persists across reconnections. Step-by-step guides per client: myfinance-mcp.com/install.

Related MCP server: expense-mcp

Why

  • No app, no forms, no spreadsheet. "Spent 24.50 eur on groceries at Lidl" is the whole workflow.

  • Every number is computed in SQL. The server owns the data and the math; the AI reads the results, it never guesses arithmetic.

  • 150+ currencies. Transactions keep their original currency (ECB and National Bank of Ukraine rates, plus a public daily snapshot for every other ISO currency from March 2024); the FX rate to your base currency is frozen at transaction date, so history never rewrites itself.

  • Any bank, by statement. Drop a CSV/PDF export or a screenshot from your banking app; hundreds of rows import in one call with idempotent deduplication, hand-logged twins merged, totals reconciled. ZenMoney users can sync read-only instead.

  • Personal vs business. Entity tag on accounts and transactions, filterable everywhere, included in CSV export for your accountant.

  • Dashboards in the chat. Budgets, trends, summaries and accounts render as interactive panels (MCP Apps) right in the conversation.

Tech Stack

  • Bun - runtime and package manager

  • Express - HTTP layer

  • MCP SDK - Model Context Protocol over Streamable HTTP (stateless)

  • OAuth 2.1 - PKCE, dynamic client registration and client ID metadata documents (Claude's published identity); sign-in with Google or an emailed one-time code (each optional)

  • Prisma + PostgreSQL - all money as numeric, all stats as SQL aggregates

  • Docker - single container deployment

MCP Tools

Tool

Description

log_expense

Record one purchase, bill or receipt (negative amount = refund)

log_income

Record income: salary, invoice, refund, interest

log_transfer

Move money between accounts, cross-currency supported; never counts as spending

import_transactions

Bulk statement import (up to 500 rows/call): dedup by bank reference or derived key, twin merge, reconciliation check; names the recurring payments it finds

get_summary

Period totals by category, merchant, month or week; expense or income breakdown, comparison with the period before, any report currency; trend_months for month-by-month trends

get_transactions

List and filter transactions, paged (total, has_more, offset)

update_transaction

Fix any field of an existing transaction, including its type or account; category fixes are remembered per merchant

delete_transactions

Delete one or many transactions by id in one call

get_accounts

All accounts with balances and net worth, converted to base currency

manage_account

Accounts: create, update, set_balance (anchor the real balance at a date), merge (fold one into another, de-duplicating), delete

set_budget

Monthly cap per category or overall; a log or import that crosses it says so

get_budget_progress

Live budget progress with days left; renders as a dashboard

get_recurring

Subscriptions, rent and bills: saved ones and the ones found in the records, monthly and yearly total, what is coming up in 30 days

set_recurring

Save, change or remove a recurring payment; auto_log writes it on its date for people who log by hand

get_settings

Signed-in account, base currency, timezone, email summary choice, server version

update_settings

Change base currency, timezone or the email summary

export_data

profile: everything but the transactions as JSON; transactions: CSV, 2000 rows per page

zenmoney

ZenMoney (international and .ru backends auto-detected): paste_token, sync, status, per-account toggle, disconnect; read-only, incremental, keeps manual edits

bank

Closed beta, invited accounts only. Open banking (Enable Banking, EU/UK): list_banks, start consent, sync, status, per-account toggle, disconnect; healthy connections also auto-sync daily

delete_all_data

Permanently delete the user profile and ALL data (GDPR erasure)

Tools merged in 0.18.0 (ping, get_trends, delete_transaction, create_account, update_account, delete_account, merge_accounts, log_balance, export_profile, export_transactions, connect_zenmoney, sync_zenmoney, connect_bank, sync_bank) are no longer listed but still answer under their old names, so a client that kept an older tool list keeps working.

MCP Apps

Three tools return an interactive dashboard (ui://myfinancemcp/dashboard) rendered directly in the chat on clients that support MCP Apps: budget rings (get_budget_progress), category summaries and monthly trends (get_summary) and the accounts/net-worth panel (get_accounts). Light and dark theme aware.

Security & Privacy

  • Receipt photos are parsed by YOUR AI client; images never reach this server.

  • Amounts, merchants and notes are never written to server logs (blind logs); usage events keep tool names, timings, error classes and coded argument values, keyed to the account and deleted with it.

  • OAuth 2.1 with PKCE, rotating refresh tokens (offline_access advertised), rate-limited sign-in.

  • All 20 tools carry MCP annotations (read-only and destructive ops flagged, connector tools marked open-world), so clients can gate confirmations correctly.

  • Bank access is strictly read-only: ZenMoney via the user's own API token, and, in the closed beta, open banking consent via Enable Banking (the bank authenticates the user; we never see credentials). Session ids and tokens are stored AES-256-GCM encrypted.

  • CSV export and instant full deletion are tools, not support tickets.

  • Hosted instance: EU data residency (Supabase, eu-central-1), TLS to the database with a pinned CA. Every query is scoped to your account by the server; the database's own API is closed to everyone (row-level security, deny-all).

  • 401 automated end-to-end checks (full OAuth flow for public and confidential clients incl. browser binding and audience checks, every tool, import dedup semantics, GDPR deletion) run as a hard deploy gate; CI runs lint and typecheck on every push.

See SECURITY.md for the disclosure policy.

Self-hosting

MIT-licensed; runs anywhere Bun and Postgres run.

The landing page in site/ is set in Switzer, whose free licence does not allow redistribution, so the font file is not in this repository. For the same look, download it from Fontshare and put Switzer-Variable.woff2 in site/fonts/; without it the pages fall back to the system font. The MCP server does not need it.

1. Postgres

Any PostgreSQL 15+ works. Supabase free tier is a good fit: create a project and copy the session pooler connection string (IPv4).

Apply the schema, then close the tables to Supabase's public Data API (Prisma creates tables with row-level security OFF, and Supabase exposes every public table to anyone holding the project's anon key). Re-run the second command after every db push that adds a table:

bun install
bunx prisma db push
psql "$DATABASE_URL" -f prisma/rls.sql

Database TLS: Supabase hosts are verified against Supabase's root CA automatically; for any other host, put sslmode= in DATABASE_URL.

2. Environment variables

Variable

Description

PORT

Server port (default 8788)

BASE_URL

Public URL of the server (OAuth issuer)

LEGACY_BASE_URLS

(optional) Older public origins served by the same container, comma-separated; tokens bound to them stay valid and their /authorize redirects to BASE_URL

DATABASE_URL

Postgres connection string

MYFINANCE_MCP_EMAIL

Bootstrap user email

MYFINANCE_MCP_PASSWORD_HASH

Bootstrap user password hash (see below)

GOOGLE_CLIENT_ID

(optional) Google OAuth client ID for "Continue with Google"

GOOGLE_CLIENT_SECRET

(optional) Google OAuth client secret

RESEND_API_KEY

(optional) Resend key: email sign-in codes and signup notifications

NOTIFY_EMAIL

(optional) Where signup notifications go

FROM_EMAIL

(optional) Verified sender; with RESEND_API_KEY it turns on email sign-in

TELEGRAM_BOT_TOKEN

(optional) Telegram bot for new-signup notifications

TELEGRAM_CHAT_ID

(optional) Chat that receives them

TOKEN_ENC_KEY

Required for ZenMoney and bank connections: 64 hex chars (openssl rand -hex 32), encrypts stored provider tokens

EB_APP_ID

(optional) Enable Banking application id; bank connections stay off until it and the key are set

EB_PRIVATE_KEY_B64

(optional) Base64 of the Enable Banking application's private key PEM

EB_API_ORIGIN

(optional) Enable Banking API origin, default https://api.enablebanking.com

REFRESH_REUSE_GRACE_MS

(optional) How long a rotated refresh token keeps working, default 30000 (parallel refreshes)

AUTO_SYNC_INTERVAL_MS

(optional) Bank auto-sync tick, default hourly (syncs connections >20h stale); 0 disables

Generate the password hash:

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

3. Run

cp .env.example app.env   # docker compose reads app.env, not .env
docker compose up -d      # uses the included Dockerfile, port 8788

Put nginx (or any TLS-terminating proxy) in front and point BASE_URL at your domain. The static landing in site/ is optional - serve it from the same origin if you want one.

Development

bun install
cp .env.example .env   # fill in your values
bun run dev            # hot reload on :8788
bun run e2e            # end-to-end suite (spawns its own server; WRITES to the DATABASE_URL database)
bun run lint

The e2e suite (359 checks) covers the full OAuth flow (discovery, dynamic registration, client ID metadata documents, PKCE, refresh rotation, revocation; public and confidential clients), every tool, statement-import dedup semantics, ZenMoney sync against a stubbed Diff API, and GDPR deletion.

API Endpoints

Endpoint

Description

POST /mcp

MCP endpoint (Bearer auth)

GET /health

Health check

GET /.well-known/oauth-authorization-server

OAuth metadata discovery

GET /.well-known/oauth-protected-resource/mcp

Protected resource metadata

POST /register

Dynamic client registration (clients may instead use an https client_id: a client ID metadata document)

GET /authorize

OAuth authorization (sign-in page)

POST /token

Token exchange

GET /auth/google

Google sign-in start (when configured)

POST /login/email, POST /login/email/verify

Email sign-in code: send, verify (when configured)

GET /connect/enablebanking/callback, POST /connect/enablebanking/confirm

Bank consent return and the confirm step

GET /api/stats

Public aggregate counters (counts only, never amounts)

License

MIT - Rteam FZE LLC

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