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io.github.sandsower/kronan-mcp

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MCP server for the Krónan grocery store API (Iceland)

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package kronan-mcp
Claude Code 
claude mcp add kronan-mcp -e 'KRONAN_ACCESS_TOKEN=<your kronan_access_token>' -- npx -y kronan-mcp@1.0.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "kronan-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "kronan-mcp@1.0.1"
            ],
            "env": {
                "KRONAN_ACCESS_TOKEN": "<your kronan_access_token>"
            }
        }
    }
}

Environment variables

  • KRONAN_ACCESS_TOKEN required secret Krónan API access token (act_ prefix). Created via Audkenni login in customer group settings.

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. kronan-mcp
  2. Tools
  3. Install
  4. Usage with Claude Code
  5. Architecture
  6. API reference
  7. Development
  8. Tests

kronan-mcp

MCP server for the Krónan grocery store API. Claude can browse products, manage shopping notes, handle checkout, and track orders from Krónan's Snjallverslun (smart store) in Iceland.

Tools

25 tools over the Model Context Protocol:

CategoryTools
Productssearch_products, get_product, get_category_products, list_categories
Checkoutget_checkout, add_checkout_lines
Orderslist_orders, get_order, delete_order_lines, set_order_substitution, lower_order_quantity
Shopping notesget_shopping_note, add_shopping_note_line, change_shopping_note_line, reorder_shopping_note_lines, delete_shopping_note_line, set_line_completion, clear_shopping_note, check_store_order_eligibility, apply_store_product_order, list_archived_lines, delete_archived_line
Product listslist_product_lists, create_product_list, get_product_list, update_product_list, delete_product_list, clear_product_list, sort_product_list, update_product_list_item
Purchase statslist_purchase_stats, set_purchase_stat_ignored
Accountget_me

Install

npm install -g kronan-mcp

Or run directly with npx (no install needed):

npx kronan-mcp
Getting a token

Tokens are created in the Krónan Snjallverslun user settings. You need an account with Audkenni (Iceland's electronic ID) login. Go to your user or customer group settings page and create an access token. Tokens are prefixed with act_.

Usage with Claude Code

Add to your project's .claude/settings.local.json or global ~/.claude/settings.json:

{
  "mcpServers": {
    "kronan": {
      "command": "npx",
      "args": ["kronan-mcp"],
      "env": {
        "KRONAN_ACCESS_TOKEN": "act_your_token_here"
      }
    }
  }
}

Then ask Claude things like:

  • "Search for milk on Krónan"
  • "What's in my shopping note?"
  • "Add 2x of SKU 02500188 to my checkout"
  • "Show my recent orders"

Architecture

src/
├── client.ts   HTTP client wrapping all Krónan API endpoints
├── index.ts    MCP server registering tools via @modelcontextprotocol/sdk
└── types.ts    TypeScript interfaces matching the OpenAPI schema

Auth is Authorization: AccessToken <token> on every request. Rate limit is 200 requests per 200 seconds per user. The client detects 429 responses and tells the caller to wait.

All prices are integers in ISK (no decimals). 230 means 230 kr.

Errors go through a typed KronanApiError with status codes. The token is scrubbed from error messages so it doesn't leak to the LLM. Auth failures and rate limits get their own user-facing messages.

set_order_substitution and set_line_completion use read-then-toggle patterns. They're not idempotent. Don't retry on timeout without checking current state first.

API reference

Full OpenAPI schema at openapi-schema.yaml.

Development

npm install && npm run build   # Build from source
npm run dev                    # Watch mode (recompiles on change)
npm test                       # Run tests
npm run test:watch             # Watch mode tests

Tests

31 tests on the HTTP client: constructor validation, error paths (429, timeouts, JSON parse failures), token scrubbing, toggle method validation, eligibility endpoint edge cases.

npm test

Frequently asked questions

What is io.github.sandsower/kronan-mcp?

MCP server for the Krónan grocery store API (Iceland)

How do I install io.github.sandsower/kronan-mcp?

It runs on your machine. In Claude Code: claude mcp add kronan-mcp -e 'KRONAN_ACCESS_TOKEN=<your kronan_access_token>' -- npx -y kronan-mcp@1.0.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.sandsower/kronan-mcp need an API key?

Yes. It expects KRONAN_ACCESS_TOKEN, which you set in its configuration.

Is io.github.sandsower/kronan-mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.sandsower/kronan-mcp?

It is published by sandsower. AI.tn lists it but does not maintain or endorse it.

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