Docs

Compounds

Compounds with their lowest prices, and every offer for one compound across shops.

List compounds

GET/api/v1/compounds

Every compound that has at least one offer. One call covers the whole catalog.

Query parameter	Type	Description
`currency`, `vat`	optional	Price basis, see currency and VAT. Applies to all prices in the answer.
`ship`	optional	Country code; leaves out shops that state they do not ship there. See ship-to.
`category`	string, optional	Only compounds of this category: `metabolic`, `repair`, `gh-axis`, `longevity`, `cognitive`, `dermal`, `reproductive`. An unknown value returns an empty list.

Request

curl 'https://peptilyze.com/api/v1/compounds?category=repair'

Response

{
  "attribution": { "text": "Data: Peptilyze (peptilyze.com)", "...": "..." },
  "generatedAt": "2026-11-09T13:00:54.150Z",
  "data": {
    "count": 1,
    "compounds": [
      {
        "slug": "bpc-157",
        "name": "BPC-157",
        "category": "repair",
        "url": "https://peptilyze.com/compounds/bpc-157/",
        "shops": 24,
        "offers": 96,
        "inStock": 71,
        "fromPrice": 13.99,
        "bestPricePerMg": { "price": 1.4, "shopId": "example-shop", "strengthMg": 10 },
        "shopsWithLabReport": 6
      }
    ]
  }
}

Get one compound

GET/api/v1/compounds/{slug}

One compound with every offer, in stock first and cheapest unit price first. 404 for an unknown slug.

Path parameter	Description
`slug`	The compound's slug, as in `/compounds/{slug}/` on the site, or from the list.

Request

curl https://peptilyze.com/api/v1/compounds/bpc-157

Response

{
  "attribution": { "text": "Data: Peptilyze (peptilyze.com)", "...": "..." },
  "generatedAt": "2026-11-09T13:00:54.150Z",
  "data": {
    "slug": "bpc-157",
    "name": "BPC-157",
    "category": "repair",
    "...": "...the list fields above, plus:",
    "aliases": ["BPC157", "Body Protection Compound 157"],
    "offers": [
      {
        "shopId": "example-shop",
        "title": "BPC-157 10 mg",
        "variant": null,
        "form": "vial",
        "strengthMg": 10,
        "units": 1,
        "packPrice": 13.99,
        "unitPrice": 13.99,
        "pricePerMg": 1.399,
        "inStock": true,
        "backorder": false,
        "labReport": false,
        "url": "https://example-shop.test/product/bpc-157"
      }
    ]
  }
}

Fields

Compound

Field	Type	Description
`slug`, `name`	string	Identifier and display name.
`category`	string	One of the categories above.
`url`	string	The compound's page on Peptilyze.
`shops`, `offers`, `inStock`	integer	Shops selling it, offers in total, offers in stock.
`fromPrice`	number or null	Lowest in-stock price of one unit of any strength, in the answer's currency and VAT basis. Null when everything is sold out.
`bestPricePerMg`	object or null	Lowest in-stock single-unit price per mg: `price`, the `shopId` and the `strengthMg` of that offer.
`shopsWithLabReport`	integer	Shops publishing a lab report for this compound.
`aliases`	string[]	Other names (detail only).
`offers`	Offer[]	All offers (detail only).

Offer

Field	Type	Description
`shopId`	string	Shop id; see shops.
`title`, `variant`	string, string or null	The shop's product title and variant label.
`form`	string	`vial`, `powder`, `pen`, `cartridge`, `oral`, `spray` or `topical`.
`strengthMg`	number or null	Content of one unit in mg, when the shop says.
`units`	integer	Units in the pack (vials in a 10-pack).
`packPrice`, `unitPrice`	number	Price of the pack and of one unit, in the currency and VAT basis stated in `pricing` (default EUR incl. VAT).
`pricePerMg`	number or null	Unit price divided by `strengthMg`; null for oral, spray and topical forms or unknown strength.
`inStock`, `backorder`	boolean	A backorder offer is never in stock.
`labReport`	boolean	The shop publishes a lab report for this product.
`url`	string	The product page at the shop.