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Hermes Grocy MCP

by rusty4444version 0.2.1i★ –iRuns on your computer
Registry nameio.github.rusty4444/hermes-grocy-mcp

Install

Overview

Description from the maker (original English)

MCP server for Grocy household ERP inventory and shopping workflows.

PopNx MCP’s three pillars

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

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: Online shops & payments
  • You need to fill in: GROCY_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: GROCY_BASE_URL, GROCY_API_KEY

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?

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": {
    "hermes-grocy": {
      "command": "uvx",
      "args": [
        "hermes-grocy-mcp"
      ],
      "env": {
        "GROCY_BASE_URL": "your-value",
        "GROCY_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add hermes-grocy --env GROCY_BASE_URL=your-value --env GROCY_API_KEY=your-value -- uvx hermes-grocy-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": {
    "hermes-grocy": {
      "command": "uvx",
      "args": [
        "hermes-grocy-mcp"
      ],
      "env": {
        "GROCY_BASE_URL": "your-value",
        "GROCY_API_KEY": "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": {
    "hermes-grocy": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "hermes-grocy-mcp"
      ],
      "env": {
        "GROCY_BASE_URL": "your-value",
        "GROCY_API_KEY": "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

  • GROCY_BASE_URL env
    Grocy base URL, with or without /api
  • GROCY_API_KEY secret env
    Grocy API key for private instances or write access

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 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account rusty4444, 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 Online shops & paymentsi

  • More stars than 0% of the other 2564 servers in this category
  • Published to the registry more recently than 8% of the other 2564 servers in this category
  • Basic checks equal to or better than 100% of the other 2564 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 Hermes Grocy 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: GROCY_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 (0.2.1) reached the registry 6 months 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: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

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

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

Stripe MCP

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

by stripeWidely used★ 2KUpdated 13 months ago

Runs in the cloud✓ stripe.com

MCP Cn Commerce

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

by TonyWang-hubEarly↓ 73/wk★ 96Updated 29 days ago

Runs on your computer

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.

Grocy MCP

A Model Context Protocol (MCP) server for Grocy, the self-hosted household ERP for groceries, inventory, chores, batteries, recipes, tasks, and shopping lists.

This server focuses on AI-friendly household operations that are awkward through generic REST clients:

  • Inspect Grocy system/version status
  • List, search, and inspect products
  • Read current stock, volatile stock, product stock details, and individual stock entries
  • List current shopping list items and add/remove products from shopping lists
  • Look up products by barcode/Grocycode
  • List and inspect any /api/objects/{entity} entity
  • Create/update generic entity objects from JSON
  • Add, consume, and inventory product stock
  • Add/remove product amounts from shopping lists

Why this exists

Grocy has a strong REST API, but MCP coverage is sparse and usually either incomplete or tightly coupled to one client's workflow. This package gives Hermes, Claude Desktop, Cursor, and other MCP clients a small, explicit, documented tool surface.

Installation

pipx install git+https://github.com/rusty4444/grocy-mcp.git

Or from a checkout:

python -m venv .venv

source .venv/bin/activate pip install -e .

Configuration

The server reads configuration from environment variables:

VariableRequiredDefaultDescription
GROCY_BASE_URLNohttps://demo.grocy.infoGrocy base URL, with or without /api
GROCY_API_KEYNo for public/demo read-only instances, yes for private/write accessunsetGrocy API key sent as GROCY-API-KEY
GROCY_TIMEOUTNo20HTTP timeout in seconds

Grocy API keys are managed in Grocy under Manage API keys. The API accepts the GROCY-API-KEY header.

MCP client config

{

"mcpServers": { "grocy": { "command": "grocy-mcp", "env": { "GROCY_BASE_URL": "https://grocy.example.com", "GROCY_API_KEY": "your-api-key" } } } }

Tools

ToolPurpose
grocy_system_infoGrocy version and runtime details
grocy_list_productsList configured products
grocy_search_productsSearch products by name/description
grocy_get_productFetch one product object
grocy_lookup_product_by_barcodeResolve a barcode/Grocycode
grocy_stock_overviewCurrent stock rows
grocy_volatile_stockDue, overdue, expired, or missing products
grocy_product_stock_detailsDetailed stock state for one product
grocy_product_stock_entriesIndividual stock entries in next-use order
grocy_common_entitiesCommon generic entity names useful with CRUD tools
grocy_list_shopping_listsConfigured shopping lists
grocy_list_shopping_list_itemsCurrent shopping list rows, optionally filtered by list id
grocy_list_entityList any generic Grocy entity
grocy_get_entity_objectFetch any generic entity object
grocy_create_entity_objectPOST a generic entity object from JSON
grocy_update_entity_objectPUT a generic entity object from JSON
grocy_add_stockAdd product amount to stock
grocy_consume_stockConsume/remove product amount from stock
grocy_inventory_productSet product inventory amount
grocy_add_product_to_shopping_listAdd a product to a shopping list
grocy_remove_product_from_shopping_listRemove a product from a shopping list
grocy_set_userfieldsSet userfield values on an entity object
grocy_list_choresList chores including computed next-due times
grocy_execute_choreExecute (mark done) a chore, optionally backdated
grocy_list_tasksList tasks

Development and validation

python -m venv .venv

source .venv/bin/activate pip install -e '.[dev]' ruff check . pytest python scripts/live_readonly_test.py

The live read-only test defaults to https://demo.grocy.info, avoiding mutations on shared infrastructure. It has been validated against Grocy API 4.6.0. Use a private Grocy instance plus GROCY_API_KEY for write-path testing.

Safety

Write-capable tools directly mutate Grocy data. Prefer read-only tools when using public demos. Keep GROCY_API_KEY in MCP client environment config or a secret manager, never in source control.

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