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Design Letters logoDesign Letters product data API

Structured Design Letters product data for developers building search, recommendations, and AI shopping agents.

Agentic commerce demo

Try a Design Letters-only AI shopping agent

This demo uses a constant Design Letters filter and tells the assistant it represents Design Letters only. Developers can use the same pattern to build brand-scoped shopping agents, product search, and recommendation flows.

Do you work at Design Letters?

Looking to drive more AI sales? Channel3 can help Design Letters surface more accurately and frequently on AI shopping platforms. No technical work required on your end. Most teams get set up in less than 10 minutes and see results same week.

Drive more AI sales
C3

Hello! I'm an AI shopping assistant powered by the Channel3 API, and I'm scoped to Design Letters products.

Find any Design Letters product with one easy endpoint

Start with 1,000 free searches every month.

curl https://api.trychannel3.com/v1/search \
  -H "x-api-key: $CHANNEL3_API_KEY" \
  -H "content-type: application/json" \
  -d '{
  "query": "Design Letters products",
  "filters": {
    "brand_ids": [
      "Av7c"
    ]
  },
  "limit": 20
}'
from channel3_sdk import Channel3

client = Channel3()

products = client.search.perform(
    query="Design Letters products",
    filters={"brand_ids": ["Av7c"]},
    limit=20,
)
import Channel3 from "@channel3/sdk";

const client = new Channel3();

const products = await client.search.perform({
  query: "Design Letters products",
  filters: {
    brand_ids: ["Av7c"],
  },
  limit: 20,
});

What the product data includes

Normalized product titles

Clean, comparable titles across merchants and storefronts.

Brand and categories

Stable identifiers for filtering, deduplication, and analytics.

Images and product metadata

Hero images, product IDs, category signals, and merchant context.

Live prices and availability

Current offer data so agents do not recommend stale products.

Merchant URLs

Direct product links from retailers and marketplaces.

Affiliate-ready offers

Monetizable links and commission-aware offer selection where available.

Sample Design Letters products

A preview of the products available through the Channel3 Design Letters product data API.

Straw Lid - Lavender
Design Letters
Straw Lid - Lavender
$79
Carry Strap For Thermo Bottle
Design Letters
Carry Strap For Thermo Bottle
$99
Porcelain Alphabet Choose Your Alphabet Cup [white]
Design Letters
Porcelain Alphabet Choose Your Alphabet Cup [white]
$37
כוס זכוכית חלבית - כחול
Design Letters
כוס זכוכית חלבית - כחול
$90
בקבוק טריטן Togo לבן
Design Letters
בקבוק טריטן Togo לבן
$95
כוס פורצלן Mom אפרסק
Design Letters
כוס פורצלן Mom אפרסק
$80
Melamine Cup A-z - L
Design Letters
Melamine Cup A-z - L
HK$69
Favourite Cups - Friendship Collection - You Rock
Design Letters
Favourite Cups - Friendship Collection - You Rock
$199
Melamine Cup A-z
Design Letters
Melamine Cup A-z
$99
Favourite Cups - Occasion Collection - Pause
Design Letters
Favourite Cups - Occasion Collection - Pause
HK$119
Breakfast Dinner Lunch Bowl Set - Nude / Grey / White
Design Letters
Breakfast Dinner Lunch Bowl Set - Nude / Grey / White
$359
Eraser Set
Design Letters
Eraser Set
$5
Wooden Cubes A-z
Design Letters
Wooden Cubes A-z
$559
כוס פורצלן Love אפרסק
Design Letters
כוס פורצלן Love אפרסק
$80
Favourite Cups - Family Collection - Mom
Design Letters
Favourite Cups - Family Collection - Mom
$199
Kids Personal Drinking Glass Special Edition Tritan - Junior
Design Letters
Kids Personal Drinking Glass Special Edition Tritan - Junior
$119
קראף זכוכית Drink 0.5l
Design Letters
קראף זכוכית Drink 0.5l
$82
School Start - Whiteabc
Design Letters
School Start - Whiteabc
$419
Favourite Tote Bag - Blue
Design Letters
Favourite Tote Bag - Blue
$130
Lucky Numbers 10mm (18k Gold-plated) - 2
Design Letters
Lucky Numbers 10mm (18k Gold-plated) - 2
$40
Vocabulary Stud - Goldplated (1 Pcs) - Mama
Design Letters
Vocabulary Stud - Goldplated (1 Pcs) - Mama
$24
Personal Pillow Case A-z (70x50) - C
Design Letters
Personal Pillow Case A-z (70x50) - C
$20
Personal Insulated Bottle A-z - Q
Design Letters
Personal Insulated Bottle A-z - Q
$34
Letter 10mm For Initial Necklace A-z (18k Gold-plated) - U
Design Letters
Letter 10mm For Initial Necklace A-z (18k Gold-plated) - U
$40

A structured response for apps and agents

Results are ready for search interfaces, ranking pipelines, product cards, and AI agent tool calls.

{
  "products": [
    {
      "id": "prod_01H...",
      "title": "Design Letters sample product",
      "brand": {
        "name": "Design Letters"
      },
      "category_ids": [
        "xoN"
      ],
      "images": [
        {
          "url": "https://..."
        }
      ],
      "offers": [
        {
          "merchant_domain": "example.com",
          "price": 128,
          "currency": "USD",
          "availability": "InStock",
          "url": "https://..."
        }
      ]
    }
  ],
  "next_page_token": "eyJwYWdlIjoyfQ..."
}

Common use cases

AI shopping agents

Let users ask for products naturally, then return structured candidates your agent can rank and explain.

Affiliate search

Build product discovery experiences with merchant URLs and affiliate-aware offer data.

Marketplace search

Power fast, filterable product search without maintaining retailer-specific scraping pipelines.

Catalog enrichment

Map sparse product records to normalized brands, categories, images, and live merchant offers.

Frequently asked questions

How do I find Design Letters product data?

Use the Channel3 search endpoint with a brand filter. The response includes normalized products, images, prices, availability, and merchant URLs.

Can I use this data in an AI shopping agent?

Yes. Channel3 is designed for product discovery workflows where an app or agent needs structured product results from many merchants.

Do results include price and stock?

Product offers include price, currency, availability, merchant domain, and product URLs when those fields are available.

Can I monetize product links?

Channel3 returns merchant URLs and can use affiliate-ready offer selection where commission data is available.

Explore product data categories

Browse broader product data APIs related to brand-scoped product search and AI shopping agent workflows.

More brand product data APIs

Compare this brand feed with other large brand catalogs available through Channel3.

Build with Design Letters product data

Start with 1,000 free searches every month. No credit card required.

Every product on the internet, in one API.

Get paid to build the future of shopping.

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In-store

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Online

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Agentic Commerce

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