Avenir MCP

Name: Avenir MCP
Author: mathbeal

by mathbealversion 0.8.0i★ –iRuns on your computer

Registry nameio.github.mathbeal/avenir-mcp

Install

Overview

Description from the maker (original English)

Unofficial MCP server for YNAB: read-only by default, every change previewed and undoable.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: YNAB_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: YNAB_API_KEY, AVENIR_MCP_WRITE

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "avenir": {
      "command": "uvx",
      "args": [
        "avenir-mcp"
      ],
      "env": {
        "YNAB_API_KEY": "your-value",
        "AVENIR_MCP_WRITE": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add avenir --env YNAB_API_KEY=your-value --env AVENIR_MCP_WRITE=your-value -- uvx avenir-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "avenir": {
      "command": "uvx",
      "args": [
        "avenir-mcp"
      ],
      "env": {
        "YNAB_API_KEY": "your-value",
        "AVENIR_MCP_WRITE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "avenir": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "avenir-mcp"
      ],
      "env": {
        "YNAB_API_KEY": "your-value",
        "AVENIR_MCP_WRITE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

YNAB_API_KEY secret required env
Your YNAB personal access token (YNAB > Account settings > Developer settings).
AVENIR_MCP_WRITE env
Set to 1 to expose the write tools; read-only otherwise.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account mathbeal, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32718 servers in this category
Published to the registry more recently than 73% of the other 32718 servers in this category
Basic checks equal to or better than 100% of the other 32718 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Avenir MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: YNAB_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.8.0) reached the registry 13 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, MemberVault MCP by usefulapi

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago

Install

MemberVault MCP by usefulapi

by m190

List courses; add users to courses, remove course access or delete users in MemberVault.

Runs in the cloudUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

avenir-mcp: an unofficial MCP server for YNAB

🇬🇧 avenir-mcp (*avenir* is French for *the future*) lets an AI agent read your YNAB plan

and help you plan what comes next.

🇫🇷 avenir-mcp permet à un agent IA de lire votre plan YNAB et de vous aider

à préparer la suite.

Ask Claude — or any MCP client — about your plan in plain words. Read-only by default; every change is previewed, confirmed by you, and can be undone.

Install

You need a YNAB personal access token: YNAB → Account Settings → Developer Settings → New Token.

Claude Desktop, no terminal: drop the file the button downloads onto Settings → Extensions, then paste your token on that screen.

Claude Code, one command with your token in it:

claude mcp add avenir-mcp --env YNAB_API_KEY=your-token -- uvx avenir-mcp

Both install it read-only. Cursor, LM Studio, VS Code, Windows, changes to your plan (AVENIR_MCP_WRITE=1) and every option: Install · Configuration.

▶ Watch the 20-second tour

Both come from an invented demo plan, replayed by python -m docsgen: every figure is what avenir-mcp answers today.

What you can ask

Understand a month — "Which category is overspent this month?" → get_monthly_summary
Prepare a spend — "Will I go below zero before December?" → forecast_balance
Pay off a debt — "When will my debts be paid off if I put 500 a month on them?" → get_debt_payoff_plan
Tidy the transactions — "Categorise what is pending." → suggest_categories, applied after your yes
Find one transaction — "Which transaction is my 86.40 receipt from the 12th?" → find_transactions
Reconcile an account — "My bank shows 3,440.80. Does YNAB agree?" → reconcile_account
Change something — "Move 30 from Tennis to Restaurants." → move_money, previewed, confirmed, and undone by undo_operation

Every tool, with a real answer: Reference · Use cases.

Missing a question? Have an idea? Tell us the question you would like to ask your budget in Discussions → Ideas; help with using avenir-mcp is in Discussions → Q&A. Never post a real amount, a real account or your token.

Why avenir-mcp

Tools for tasks, not endpoints. One tool classifies a month, one reconciles an account.
Read-only by default. The tools that change a plan are registered only if you enable them.
Preview, confirm, undo. A write waits for your yes; undo_operation reverts it.
Answers an agent can read. Currency units, typed answers, bank text treated as untrusted.
Verified. 100 % line and branch coverage, and a real agent on an invented plan: 25/25.

📖 Documentation: [https://avenir-mcp.pages.dev/avenir-mcp/](https://avenir-mcp.pages.dev/avenir-mcp/) · English · Français · Español · Deutsch · Nederlands

Claude Code plugin

plugin/ is avenir-mcp as a Claude Code plugin: Claude Code asks for your token, keeps it out of sight, and starts the server from the plugin's own locked environment. From a clone: claude --plugin-dir plugin.

The plugin	What
runs	`uv run --locked --project` the plugin's folder, which starts the release `plugin/pyproject.toml` pins, and nothing else. No script of its own, no build step, no hook, no shell
contacts	`pypi.org` and `files.pythonhosted.org`, to install that release and the versions `plugin/uv.lock` pins, the first time; then `api.ynab.com`, with your token, as avenir-mcp always does
writes	the environment `uv` resolves inside the plugin's folder, and `uv`'s own cache. Nothing elsewhere
changes in your plan	nothing. It starts avenir-mcp read-only: `AVENIR_MCP_WRITE` is not set, so the tools that change a plan are never registered

Development

git clone https://github.com/mathbeal/avenir-mcp && cd avenir-mcp

uv sync just check # lint, types, tests at 100 % coverage, vocabulary, lockfile just docs-serve # the documentation, live just evaluate # a real agent on the demo plan (uses your Claude plan)

Read AGENTS.md and CONTRIBUTING.md before opening a pull request. Security reports: SECURITY.md. Also: ARCHITECTURE.md, ROADMAP.md, GOVERNANCE.md and the code of conduct.

Built and tested against YNAB's API v1.88.0; a weekly YNAB API drift check fails when YNAB publishes a new version. Self-checked on every change against YNAB's API terms of 2025-05-28 (naming, attribution, YNAB's own image, a personal token for its owner only, the hourly limit); a weekly job turns that badge red when they change.

Privacy Policy

avenir-mcp is a program you run yourself, not a service: its publisher runs no server and receives none of your data. Your token is read from the environment, kept in memory as a secret value and sent only to YNAB; your plan's data is fetched when a tool needs it and returned to your agent, so the model provider behind your MCP client sees it too. What is handled, how long it is kept and how to erase it: https://avenir-mcp.pages.dev/avenir-mcp/project/privacy/.

Licence

MIT.

Unofficial project

We are not affiliated, associated, or in any way officially connected with YNAB or any of its subsidiaries or affiliates. The official YNAB website can be found at https://www.ynab.com. The names YNAB and You Need A Budget, as well as related names, tradenames, marks, trademarks, emblems, and images are registered trademarks of YNAB. They are named here only to say which service avenir-mcp works with. Listed by YNAB in its Works with YNAB directory, among third-party apps. Not endorsed by YNAB.

avenir-mcp is for personal use on your own machine, with your own YNAB token. Running it as a public or shared

Only the beginning is shown; read the rest in the repo

Avenir MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

MemberVault MCP by usefulapi

README from the maker

avenir-mcp: an unofficial MCP server for YNAB

Install

What you can ask

Why avenir-mcp

Claude Code plugin

Development

Privacy Policy

Licence

Unofficial project