# Mcp Ynab

> FastMCP server for YNAB that auto-generates MCP tools from YNAB’s OpenAPI spec, with support for HTTP and stdio transports.

- **Type:** MCP server
- **Install:** `agentstack add mcp-alexfu-mcp-ynab`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [alexfu](https://agentstack.voostack.com/s/alexfu)
- **Installs:** 0
- **Category:** [Integrations](https://agentstack.voostack.com/c/integrations)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [alexfu](https://github.com/alexfu)
- **Source:** https://github.com/alexfu/mcp-ynab

## Install

```sh
agentstack add mcp-alexfu-mcp-ynab
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# mcp-ynab

FastMCP server that exposes the [YNAB API](https://api.ynab.com/) via MCP using YNAB's published OpenAPI spec.

## Requirements

- Python 3.12+
- A YNAB personal access token
- `uv` (recommended) or `pip`

## Configuration

Environment variables:

- `YNAB_TOKEN` (required): your YNAB API token
- `TRANSPORT` (optional): `http` (default) or `stdio`

## Run Locally

Using `uv`:

```bash
uv sync
export YNAB_TOKEN="your_token_here"
export TRANSPORT="http"   # optional, defaults to http
uv run python main.py
```

HTTP mode starts the server on `0.0.0.0:8080`.

## Docker

Use the prebuilt image from GHCR:

```bash
docker pull ghcr.io/alexfu/mcp-ynab:latest
```

Run prebuilt image in HTTP mode:

```bash
docker run --rm -p 8080:8080 \
  -e YNAB_TOKEN="your_token_here" \
  -e TRANSPORT="http" \
  ghcr.io/alexfu/mcp-ynab:latest
```

Run prebuilt image in stdio mode:

```bash
docker run --rm \
  -e YNAB_TOKEN="your_token_here" \
  -e TRANSPORT="stdio" \
  ghcr.io/alexfu/mcp-ynab:latest
```

## Notes

- The server fetches YNAB's OpenAPI spec at startup from `https://api.ynab.com/papi/open_api_spec.yaml`.
- Startup will fail if `YNAB_TOKEN` is missing, `TRANSPORT` is invalid, or the spec request fails.

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [alexfu](https://github.com/alexfu)
- **Source:** [alexfu/mcp-ynab](https://github.com/alexfu/mcp-ynab)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-alexfu-mcp-ynab
- Seller: https://agentstack.voostack.com/s/alexfu
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.