Product data
First Day Covers
Structured first day covers product data for search, recommendations, and AI shopping agents.
What First Day Covers can I help you find?
One endpoint
Find all first day covers on the internet, in one API call
- Normalized titles, images, and stable category IDs
- Live prices, availability, and merchant URLs
- Commission-ready offers
curl https://api.trychannel3.com/v1/search \
-H "x-api-key: $CHANNEL3_API_KEY" \
-H "content-type: application/json" \
-d '{
"query": "first day covers",
"filters": {
"category_ids": [
"10j"
]
},
"limit": 20
}'from channel3_sdk import Channel3
client = Channel3()
response = client.products.search(
query="first day covers",
filters={"category_ids": ["10j"]},
limit=20,
)import { Channel3 } from "@channel3/sdk";
const client = new Channel3();
const response = await client.products.search({
query: "first day covers",
filters: {
category_ids: ["10j"],
},
limit: 20,
});Questions about First Day Covers
Artist-signed cachet, Embossed cachet, Hand-drawn cachet, and Hand-painted cachet.