Live supplement prices per kg, serving or capsule from Dutch and Belgian stores. Free, no API key.
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Find the cheapest supplements by normalized price-per-unit within a category (and all its subcategories). This is the primary tool for "what is the cheapest X?" questions. Use list_categories first to pick a valid category_slug.
The category to search within, e.g. "whey-protein" or "creatine". Products in every subcategory are included, so a parent slug like "protein-powder" works too. Get valid slugs from list_categories.
Maximum number of products to return (1-50).
Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected.
When true, only return products currently in stock.
Find the cheapest supplements by normalized price-per-unit within a category (and all its subcategories). This is the primary tool for "what is the cheapest X?" questions. Use list_categories first to pick a valid category_slug.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Maximum number of products to return (1-50). |
| market | string | Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected. |
| category_slug* | string | The category to search within, e.g. "whey-protein" or "creatine". Products in every subcategory are included, so a parent slug like "protein-powder" works too. Get valid slugs from list_categories. |
| in_stock_only | boolean | When true, only return products currently in stock. |
{
"type": "object",
"required": [
"category_slug"
],
"properties": {
"limit": {
"type": "integer",
"default": 10,
"maximum": 50,
"minimum": 1,
"description": "Maximum number of products to return (1-50)."
},
"market": {
"type": "string",
"description": "Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected."
},
"category_slug": {
"type": "string",
"description": "The category to search within, e.g. \"whey-protein\" or \"creatine\". Products in every subcategory are included, so a parent slug like \"protein-powder\" works too. Get valid slugs from list_categories."
},
"in_stock_only": {
"type": "boolean",
"default": false,
"description": "When true, only return products currently in stock."
}
}
}Get full detail for one product by its id: price, normalized unit price, size, bulk/staffel tiers, buy link, and recent price history. Use the id returned by find_cheapest or search_products.
| Argument | Type | Description |
|---|---|---|
| market | string | Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected. |
| product_id* | integer | The numeric product id, as returned in the `id` field by find_cheapest or search_products. |
{
"type": "object",
"required": [
"product_id"
],
"properties": {
"market": {
"type": "string",
"description": "Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected."
},
"product_id": {
"type": "integer",
"description": "The numeric product id, as returned in the `id` field by find_cheapest or search_products."
}
}
}List the supplement categories that currently hold priced products, each with a live product count, store count, lowest normalized unit price, and its comparison basis (per_kg / per_serving / per_capsule). Use this to discover a valid category_slug for find_cheapest.
| Argument | Type | Description |
|---|---|---|
| market | string | Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected. |
{
"type": "object",
"properties": {
"market": {
"type": "string",
"description": "Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected."
}
}
}Search the whole supplement catalog by product name or brand. Typo-tolerant (e.g. "kreatine", "theanin" still match). Results are ordered by relevance, then cheapest normalized price-per-unit. Use find_cheapest instead when you already know the category.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Maximum number of products to return (1-50). |
| query* | string | The product name or brand to search for, e.g. "whey isolaat" or "magnesium bisglycinaat". |
| market | string | Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected. |
| category_slug | string | Optional: restrict results to this category and all of its subcategories, e.g. "protein-powder". Must be a slug from list_categories; an unknown slug is rejected. |
| in_stock_only | boolean | When true, only return products currently in stock. |
| max_unit_price_cents | integer | Optional: only return products whose normalized unit price is at or below this many cents. |
{
"type": "object",
"required": [
"query"
],
"properties": {
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1,
"description": "Maximum number of products to return (1-50)."
},
"query": {
"type": "string",
"minLength": 2,
"description": "The product name or brand to search for, e.g. \"whey isolaat\" or \"magnesium bisglycinaat\"."
},
"market": {
"type": "string",
"description": "Optional country market to query: nl, be, fr, gb, pl, es. Defaults to nl, the market this endpoint answers for. Any other value is rejected."
},
"category_slug": {
"type": "string",
"description": "Optional: restrict results to this category and all of its subcategories, e.g. \"protein-powder\". Must be a slug from list_categories; an unknown slug is rejected."
},
"in_stock_only": {
"type": "boolean",
"default": false,
"description": "When true, only return products currently in stock."
},
"max_unit_price_cents": {
"type": "integer",
"minimum": 0,
"description": "Optional: only return products whose normalized unit price is at or below this many cents."
}
}
}