Connect your AI assistant to YNAB. Read-only by default, with reversible opt-in writes.
Connect Runs on your machine
claude mcp add mcp-server-for-ynab -e YNAB_API_KEY=<YNAB_API_KEY> -e YNAB_PLAN_ID=<YNAB_PLAN_ID> -e YNAB_ALLOW_WRITES=<YNAB_ALLOW_WRITES> -- uvx mcp-server-for-ynab==0.4.0{
"mcpServers": {
"mcp-server-for-ynab": {
"command": "uvx",
"args": [
"mcp-server-for-ynab==0.4.0"
],
"env": {
"YNAB_API_KEY": "<YNAB_API_KEY>",
"YNAB_PLAN_ID": "<YNAB_PLAN_ID>",
"YNAB_ALLOW_WRITES": "<YNAB_ALLOW_WRITES>"
}
}
}
}{
"mcpServers": {
"mcp-server-for-ynab": {
"command": "uvx",
"args": [
"mcp-server-for-ynab==0.4.0"
],
"env": {
"YNAB_API_KEY": "<YNAB_API_KEY>",
"YNAB_PLAN_ID": "<YNAB_PLAN_ID>",
"YNAB_ALLOW_WRITES": "<YNAB_ALLOW_WRITES>"
}
}
}
}{
"servers": {
"mcp-server-for-ynab": {
"type": "stdio",
"command": "uvx",
"args": [
"mcp-server-for-ynab==0.4.0"
],
"env": {
"YNAB_API_KEY": "<YNAB_API_KEY>",
"YNAB_PLAN_ID": "<YNAB_PLAN_ID>",
"YNAB_ALLOW_WRITES": "<YNAB_ALLOW_WRITES>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
YNAB_API_KEYRequired, secret | YNAB personal access token from app.ynab.com/settings/developer. |
YNAB_PLAN_IDOptional | Default plan (budget) id, so tools do not need it passed on every call. |
YNAB_ALLOW_WRITESOptional | Set to 1 to register the write tools. Unset means read-only, and the write tools are absent from tools/list entirely. |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 6 Sep 2026 |
| Last updated | 6 Sep 2026 |
| Registry name | io.github.hs737/mcp-server-for-ynab |
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