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x402 OpenSea — NFT Collections Discovery
x402
x402 OpenSea — NFT Collections Discovery is a paid API for AI agents from 402opensea.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Lists NFT collections on the Base blockchain via OpenSea API v2, accessible with a pay-per-call x402 USDC micropayment.
Price / call$0.01
Success—
StatusUnknown
How this service works
Discover digital collectibles and access them with x402 payments in USDC.
Output
Returns a JSON object confirming success, the queried chain (e.g. 'base'), the number of collections found, the data source ('OpenSea API v2'), and an array of collection objects each containing the collection name, slug, and chain identifier.
Example use cases
Browsing Base NFT collections
“Show me what NFT collections are currently listed on OpenSea for the Base blockchain so I can see what's available to collect.”
NFT portfolio research tool
“I'm researching digital collectibles — can you fetch me a list of NFT collection names and slugs on Base from OpenSea so I can compare what's out there?”
Agent-driven NFT marketplace integration
“My agent needs to know which NFT collections exist on Base — grab the current collection list from OpenSea and give me the names and slugs.”
Technical details
Endpoint
POSThttps://402opensea.vercel.app/api/opensea/collections?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-use, low-cost ($0.01 USDC) way to query NFT collections on the Base blockchain using real OpenSea data, without requiring a long-term API key setup. Ideal for AI agents that need on-demand NFT discovery with x402 micropayment support built in, especially in Web3-native workflows on Base chain.
Side effects
- Payment not provided or insufficient USDC — x402 payment required error
- OpenSea API v2 rate limit exceeded — upstream API throttle error
- Invalid chain parameter — returns error or empty results
- OpenSea API credentials invalid or expired — 401/403 upstream error
- Network timeout reaching OpenSea backend — 504 or timeout error
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"count": 1,
"source": "OpenSea API v2",
"success": true,
"collections": [
{
"name": "Example collection",
"slug": "example-collection",
"chain": "base"
}
]
}
}Tags
x402
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