Unofficial read-only MCP server for Greek supermarket price data from PosoKanei.
Unofficial read-only MCP server for supermarket product and price data from PosoKanei.
This server lets MCP-compatible clients ask questions such as:
Early open-source version. The implementation uses public, undocumented endpoints used by the PosoKanei web app. Keep requests modest and cache-friendly.
This project is not affiliated with, endorsed by, or operated by PosoKanei, gov.gr, or any Greek public authority.
Add it to your MCP client configuration:
{
"mcpServers": {
"posokanei": {
"command": "npx",
"args": ["-y", "posokanei-mcp"]
}
}
}
For local development:
{
"mcpServers": {
"posokanei": {
"command": "node",
"args": ["/absolute/path/to/posokanei-mcp/dist/index.js"]
}
}
}
Build first:
npm install
npm run build
| Tool | Purpose |
|---|---|
search_products | Search products by text. |
get_product | Get details and retailer prices for a product id. |
lookup_barcode | Find product prices by EAN/GTIN barcode. |
list_products_by_category | List category products, sorted by unit price by default. |
list_categories | Return a simplified category tree. |
list_retailers | List known retailers. |
get_price_history | Fetch product detail with history when available. |
compare_competitors | Fetch comparable/competitor product data when available. |
compare_basket | Compare a small basket across retailers. |
get_stats | Return high-level dataset stats. |
Optional environment variables:
| Variable | Default | Purpose |
|---|---|---|
POSOKANEI_API_BASE | https://api.posokanei.gov.gr | API base URL. |
POSOKANEI_CACHE_TTL_MS | 300000 | In-memory cache TTL. |
POSOKANEI_MIN_INTERVAL_MS | 250 | Minimum delay between outbound API requests. |
POSOKANEI_TIMEOUT_MS | 15000 | Request timeout. |
npm install
npm run typecheck
npm test
The test suite mocks the PosoKanei API. It should not require live network access.
MIT
Source-derived launch command. Check the maintainer’s required arguments and credentials before running:
npx -y posokanei-mcpMerge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.
{
"mcpServers": {
"io-github-charistas-posokanei-mcp": {
"command": "npx",
"args": [
"-y",
"posokanei-mcp"
]
}
}
}Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.
Claude Desktop setup referenceposokanei-mcpnpmio.github.charistas/posokanei-mcp works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.
~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.~/.cursor/mcp.jsonRestart Cursor for changes to take effect..vscode/mcp.jsonReload VS Code window for changes to take effect.~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect..mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.